Commit Graph

2417 Commits

Author SHA1 Message Date
Jonas Devlieghere 1463341f4b [lldb/Test] Fix substrs order in self.expect for the remaining tests (NFC)
Currently the substrs parameter takes a list of strings that need to be
found but the ordering isn't checked. D73766 might change that so this
changes a several tests so that the order of the strings in the substrs
list is in the order in which they appear in the output.
2020-01-31 13:35:33 -08:00
Michał Górny 83a7a4aaad [lldb] [test] Skip 128-bit int tests on i386 (no __int128_t) 2020-01-31 21:59:38 +01:00
Jonas Devlieghere 81b0becaae [lldb/Test] Fix substrs order in self.expect for more tests (NFC)
Currently the substrs parameter takes a list of strings that need to be
found but the ordering isn't checked. D73766 might change that so this
changes a several tests so that the order of the strings in the substrs
list is in the order in which they appear in the output.
2020-01-31 12:44:24 -08:00
Jonas Devlieghere f5a71b49be [lldb/Test] Fix substrs order in self.expect for more tests (NFC)
Currently the substrs parameter takes a list of strings that need to be
found but the ordering isn't checked. D73766 might change that so this
changes a several tests so that the order of the strings in the substrs
list is in the order in which they appear in the output.
2020-01-31 12:19:29 -08:00
Jonas Devlieghere 2c19d05ae9 [lldb/Test] Fix substrs order in self.expect for more tests (NFC)
Currently the substrs parameter takes a list of strings that need to be
found but the ordering isn't checked. D73766 might change that so this
changes a several tests so that the order of the strings in the substrs
list is in the order in which they appear in the output.
2020-01-31 10:29:33 -08:00
Raphael Isemann 6c7efe2eec [lldb][NFC] Fix expect calls with wrong order of 'substrs' items for D73766
Currently the substrs parameter takes a list of strings
that need to be found but the ordering isn't checked. D73766
might change that so this changes a several tests so that
the order of the strings in the substrs list is in the order
in which they appear in the output.
2020-01-31 17:54:18 +01:00
Raphael Isemann 99e63f5825 [lldb] Print the command output when 'expect' fails even if a custom msg is passed
Currently if 'expect' fails and a custom msg is supplied, then lldbtest
will not print the actual command output. This makes it impossible to know
why the test actually failed. This just prints the command output even
if the msg parameter was supplied.
2020-01-31 10:16:46 +01:00
Hector Diaz 45e3f6660c Auto-completion bug fix for dot operator
Summary:
There was a bug on LLDB VSCode where there was the following behavior:

//Code

```
struct foo {
    int bar:
};
...
foo my_foo = {10};
```

Trying to auto-complete my_foo.b with my_foo.bar resulted instead with my_foo.my_foo.bar

This diff fixes this bug and adds some tests to check correct behavior.

It also fixes the same bug using the arrow operator (->) when user manually requests completions.
TODO: Fix bug where no recommended completions are automatically shown with arrow operator

{F11249959}

{F11249958}

Reviewers: wallace

Reviewed By: wallace

Subscribers: teemperor, labath, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73506
2020-01-30 16:02:58 -08:00
Raphael Isemann a5fb2e371e [lldb] Complete return types of CXXMethodDecls to prevent crashing due to covariant return types
Summary:
Currently we crash in Clang's CodeGen when we call functions with covariant return types with this assert:
```
Assertion failed: (DD && "queried property of class with no definition"), function data, file clang/include/clang/AST/DeclCXX.h, line 433.
```
when calling `clang::CXXRecordDecl::isDerivedFrom` from the `ItaniumVTableBuilder`.

Clang seems to assume that the underlying record decls of covariant return types are already completed.
This is true during a normal Clang invocation as there the type checker will complete both decls when
checking if the overloaded function is valid (i.e., the return types are covariant).

When we minimally import our AST into the expression in LLDB we don't do this type checking (which
would complete the record decls) and we end up trying to access the invalid record decls from CodeGen
which makes us trigger the assert.

This patch just completes the underlying types of ptr/ref return types of virtual function so that the
underlying records are complete and we behave as Clang expects us to do.

Fixes rdar://38048657

Reviewers: lhames, shafik

Reviewed By: shafik

Subscribers: abidh, JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73024
2020-01-29 09:08:35 +01:00
Med Ismail Bennani 954d04295b Revert "[lldb/Target] Add Assert StackFrame Recognizer"
This reverts commit 03a6b858fd.

The test doesn't pass on Debian.
2020-01-28 18:40:08 +01:00
Med Ismail Bennani 03a6b858fd [lldb/Target] Add Assert StackFrame Recognizer
When a thread stops, this checks depending on the platform if the top frame is
an abort stack frame. If so, it looks for an assert stack frame in the upper
frames and set it as the most relavant frame when found.

To do so, the StackFrameRecognizer class holds a "Most Relevant Frame" and a
"cooked" stop reason description. When the thread is about to stop, it checks
if the current frame is recognized, and if so, it fetches the recognized frame's
attributes and applies them.

rdar://58528686

Differential Revision: https://reviews.llvm.org/D73303

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2020-01-28 18:21:29 +01:00
Raphael Isemann a311bebb53 [lldb][NFC] Give import-std-module tests a more unique file names
We want that the *.py names for the tests have unique names but
the current ones are sometimes very simple (e.g., "TestUniquePtr.py")
and could collide with unrelated tests. This just gives all these
tests a "FromStdModule" suffix to make these collisions less likely.
2020-01-27 10:55:57 +01:00
Jonas Devlieghere 1c90ce0c76 [lldb/Test] Disable hardware check on arm/aarch64
BreakpointSites know they're backed by hardware based on whether the
"hardware index" is set. This does not appear the to be done for
arm/aarch64.

https://llvm.org/PR44659
2020-01-24 20:54:18 -08:00
Jonas Devlieghere d8e0f4fae7 [lldb/Breakpoint] Include whether or not a breakpoint is a HW BP
Include whether or not a breakpoint is a hardware breakpoint in the
breakpoint location. This will show up in things like the breakpoint
list.

Differential revision: https://reviews.llvm.org/D73389
2020-01-24 19:24:25 -08:00
Jonas Devlieghere 2bc38ab3d0 [lldb/Breakpoint] Recogize hardware breakpoints as such
Recognize hardware breakpoints as breakpoints instead of just mach
exceptions. The mach exception is the same for watch and breakpoints, so
we have to try each to figure out which is which.

Differential revision: https://reviews.llvm.org/D73401
2020-01-24 19:24:25 -08:00
Jonas Devlieghere 96f3ea0d21 [lldb/debugserver] Implement hardware breakpoints for x86_64 and i386
This implements hardware breakpoints for x86_64 and i386 in debugserver.
It's based on Pedro's patch sent to lldb-commits [1] although most of it
is the same as the existing hardware watchpoint implementation.

[1] http://lists.llvm.org/pipermail/lldb-commits/Week-of-Mon-20200113/060327.html

Differential revision: https://reviews.llvm.org/D72985
2020-01-24 15:07:31 -08:00
Pavel Labath 77cedb0cdb [lldb] Fix nondeterminism in TestCppBitfields
The test was printing a char[3] variable without a terminating nul. The
memory after that variable (an unnamed bitfield) was not initialized. If
the memory happened to be nonzero, the summary provider for the variable
would run off into the next field.

This is probably not the right behavior (it should stop at the end of
the array), but this is not the purpose of this test. I have filed
pr44649 for this bug, and fixed the test to not depend on this behavior.
2020-01-24 12:09:20 +01:00
shafik fcaf5f6c01 [LLDB] Fix the handling of unnamed bit-fields when parsing DWARF
We ran into an assert when debugging clang and performing an expression on a class derived from DeclContext. The assert was indicating we were getting the offsets wrong for RecordDeclBitfields. We were getting both the size and offset of unnamed bit-field members wrong. We could fix this case with a quick change but as I extended the test suite to include more combinations we kept finding more cases that were being handled incorrectly. A fix that handled all the new cases as well as the cases already covered required a refactor of the existing technique.

Differential Revision: https://reviews.llvm.org/D72953
2020-01-23 14:46:24 -08:00
Jim Ingham 29c7e6c8c9 Clang added a new feature to the ObjC compiler that will translate method
calls to commonly un-overridden methods into a function that checks whether
the method is overridden anywhere and if not directly dispatches to the
NSObject implementation.

That means if you do override any of these methods, "step-in" will not step
into your code, since we hit the wrapper function, which has no debug info,
and immediately step out again.

Add code to recognize these functions as "trampolines" and a thread plan that
will get us from the function to the user code, if overridden.

<rdar://problem/54404114>

Differential Revision: https://reviews.llvm.org/D73225
2020-01-23 12:41:14 -08:00
Raphael Isemann 6e3b0cc2fb [lldb][NFC] Rename ClangASTContext to TypeSystemClang
Summary:
This commit renames ClangASTContext to TypeSystemClang to better reflect what this class is actually supposed to do
(implement the TypeSystem interface for Clang). It also gets rid of the very confusing situation that we have both a
`clang::ASTContext` and a `ClangASTContext` in clang (which sometimes causes Clang people to think I'm fiddling
with Clang's ASTContext when I'm actually just doing LLDB work).

I also have plans to potentially have multiple clang::ASTContext instances associated with one ClangASTContext so
the ASTContext naming will then become even more confusing to people.

Reviewers: #lldb, aprantl, shafik, clayborg, labath, JDevlieghere, davide, espindola, jdoerfert, xiaobai

Reviewed By: clayborg, labath, xiaobai

Subscribers: wuzish, emaste, nemanjai, mgorny, kbarton, MaskRay, arphaman, jfb, usaxena95, jingham, xiaobai, abidh, JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D72684
2020-01-23 10:09:14 +01:00
Davide Italiano f55b033c02 [TestStdModuleSysroot] Only run locally. 2020-01-22 13:56:51 -08:00
Jim Ingham 89c8866c04 Convert AssertTrue( A == B) to AssertEqual(A, B) in TestObjCStepping.py. 2020-01-22 13:20:15 -08:00
Pavel Labath 0157a74bec [lldb] Fix an asan error from 27df2d9f55
This error is caused by a combination of a couple of factors:
- the test accidentally creating a list with a single (empty) FileSpec
  instead of an empty list
- lldb overzeleously converting empty strings into nullptrs
- asan overzeleously validating symlink(2) arguments (the real symlink
  call would just fail with EFAULT)

I fix this by using FileSpec::GetPath instead of GetCString. This avoids
the nullptr and also avoids inserting the path into the global string
pool.

I also enhance the test case to test both empty paths and empty lists.
2020-01-22 10:14:47 +01:00
Adrian Prantl fa001767f0 Fix typos 2020-01-21 15:32:34 -08:00
Fred Riss 0478eadf73 [lldb/DataFormatters] Fix the `$$deference$$` synthetic child
Summary:
The ValueObject code checks for a special `$$dereference$$` synthetic
child to allow formatter providers to implement a natural
dereferencing behavior in `frame variable` for objects like smart
pointers.

This support was broken when used directly throught the Python API and
not trhough `frame variable`. The reason is that
SBFrame.FindVariable() will return by default the synthetic variable
if it exists, while `frame variable` will not do this eagerly. The
code in `ValueObject::Dereference()` accounted for the latter but not
for the former. The fix is trivial. The test change includes
additional covergage for the already-working bahevior as it wasn't
covered by the testsuite before.

This commit also adds a short piece of documentatione explaining that
it is possible (even advisable) to provide this synthetic child
outstide of the range of the normal children.

Reviewers: jingham

Subscribers: lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73053
2020-01-21 13:35:55 -08:00
Daniel Kiss 95116c591f [lldb] Add a setting to not install the main executable
Summary:
Add setting target.auto-install-main-executable that controls whether
the main executable should be automatically installed when connected to
a remote platform even if it does not have an explicit install path
specified. The default is true as the current behaviour.

Reviewers: omjavaid, JDevlieghere, srhines, labath, clayborg

Reviewed By: clayborg

Subscribers: kevin.brodsky, lldb-commits, llvm-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D71761
2020-01-21 19:26:18 +00:00
Francesco Petrogalli 9bb11785dc Revert "[lldb] Add a setting to not install the main executable"
The commit has been reverted as it does not mention the author of the
patch.

This reverts commit 7c9bcba644.
2020-01-21 19:24:02 +00:00
Francesco Petrogalli 7c9bcba644 [lldb] Add a setting to not install the main executable
Summary:
Add setting target.auto-install-main-executable that controls whether
the main executable should be automatically installed when connected to
a remote platform even if it does not have an explicit install path
specified. The default is true as the current behaviour.

Reviewers: omjavaid, JDevlieghere, srhines, labath, clayborg

Reviewed By: clayborg

Subscribers: kevin.brodsky, lldb-commits, llvm-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D71761
2020-01-21 19:06:44 +00:00
Jonas Devlieghere 04de24e690 [lldb/IOHandler] Improve synchronization between IO handlers.
The way the IO handlers are currently managed by the debugger is wrong. The
implementation lacks proper synchronization between RunIOHandlerSync and
RunIOHandlers. The latter is meant to be run by the "main thread", while the
former is meant to be run synchronously, potentially from a different thread.

Imagine a scenario where RunIOHandlerSync is called from a different thread
than RunIOHandlers. Both functions manipulate the debugger's IOHandlerStack.
Although the push and pop operations are synchronized, the logic to activate,
deactivate and run IO handlers is not.

While investigating PR44352, I noticed some weird behavior in the Editline
implementation. One of its members (m_editor_status) was modified from another
thread. This happened because the main thread, while running RunIOHandlers
ended up execution the IOHandlerEditline created by the breakpoint callback
thread. Even worse, due to the lack of synchronization within the IO handler
implementation, both threads ended up executing the same IO handler.

Most of the time, the IO handlers don't need to run synchronously. The
exception is sourcing commands from external files, like the .lldbinit file.

I've added a (recursive) mutex to prevent another thread from messing with the
IO handlers wile another thread is running one synchronously. It has to be
recursive, because we might have to source another file when encountering a
command source in the original file.

Differential revision: https://reviews.llvm.org/D72748
2020-01-20 11:17:55 -08:00
Raphael Isemann 65bab53afb [lldb][NFC] Add test for iterator invalidation during code completion. 2020-01-20 15:01:39 +01:00
Raphael Isemann 22447a61d4 [lldb] Mark the implicit copy constructor as deleted when a move constructor is provided.
Summary:
CXXRecordDecls that have a move constructor but no copy constructor need to
have their implicit copy constructor marked as deleted (see C++11 [class.copy]p7, p18)
Currently we don't do that when building an AST with ClangASTContext which causes
Sema to realise that the AST is malformed and asserting when trying to create an implicit
copy constructor for us in the expression:
```
Assertion failed: ((data().DefaultedCopyConstructorIsDeleted || needsOverloadResolutionForCopyConstructor())
    && "Copy constructor should not be deleted"), function setImplicitCopyConstructorIsDeleted, file include/clang/AST/DeclCXX.h, line 828.
```

In the test case there is a class `NoCopyCstr` that should have its copy constructor marked as
deleted (as it has a move constructor). When we end up trying to tab complete in the
`IndirectlyDeletedCopyCstr` constructor, Sema realises that the `IndirectlyDeletedCopyCstr`
has no implicit copy constructor and tries to create one for us. It then realises that
`NoCopyCstr` also has no copy constructor it could find via lookup. However because we
haven't marked the FieldDecl as having a deleted copy constructor the
`needsOverloadResolutionForCopyConstructor()` returns false and the assert fails.
`needsOverloadResolutionForCopyConstructor()` would return true if during the time we
added the `NoCopyCstr` FieldDecl to `IndirectlyDeletedCopyCstr` we would have actually marked
it as having a deleted copy constructor (which would then mark the copy constructor of
`IndirectlyDeletedCopyCstr ` as needing overload resolution and Sema is happy).

This patch sets the correct mark when we complete our CXXRecordDecls (which is the time when
we know whether a copy constructor has been declared). In theory we don't have to do this if
we had a Sema around when building our debug info AST but at the moment we don't have this
so this has to do the job for now.

Reviewers: shafik

Reviewed By: shafik

Subscribers: aprantl, JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D72694
2020-01-20 14:34:07 +01:00
Pavel Labath 27df2d9f55 [lldb] Don't process symlinks deep inside DWARFUnit
Summary:
This code is handling debug info paths starting with /proc/self/cwd,
which is one of the mechanisms people use to obtain "relocatable" debug
info (the idea being that one starts the debugger with an appropriate
cwd and things "just work").

Instead of resolving the symlinks inside DWARFUnit, we can do the same
thing more elegantly by hooking into the existing Module path remapping
code. Since llvm::DWARFUnit does not support any similar functionality,
doing things this way is also a step towards unifying llvm and lldb
dwarf parsers.

Reviewers: JDevlieghere, aprantl, clayborg, jdoerfert

Subscribers: lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D71770
2020-01-20 13:05:00 +01:00
Jonas Devlieghere f78f15a60e [lldb/Test] XFAIL TestRequireHWBreakpoints when HW BPs are avialable
Resolves PR44055
2020-01-18 13:15:44 -08:00
Fred Riss 546f8f4264 [lldb/testsuite] Modernize 2 test Makefiles
Those old Makefiles used completely ad-hoc rules for building files,
which means they didn't obey the test harness' variants.

They were somewhat tricky to update as they use very peculiar build
flags for some files. For this reason I was careful to compare the
build commands before and after the change, which is how I found the
discrepancy fixed by the previous commit.

While some of the make syntax used here might not be easy to grasp for
newcomers (per-target variable overrides), it seems better than to
have to repliacte the Makefile.rules logic for the test variants and
platform support.
2020-01-17 20:56:28 -08:00
Fred Riss 509b78883d [lldb/Makefile.rules] Force the default target to be 'all'
The test harness invokes the test Makefiles with an explicit 'all'
target, but it's handy to be able to recursively call Makefile.rules
without speficying a goal.

Some time ago, we rewrote some tests in terms of recursive invocations
of Makefile.rules. It turns out this had an unintended side
effect. While using $(MAKE) for a recursive invocation passes all the
variables set on the command line down, it doesn't pass the make
goals. This means that those recursive invocations would invoke the
default rule. It turns out the default rule of Makefile.rules is not
'all', but $(EXE). This means that ti would work becuase the
executable is always needed, but it also means that the created
binaries would not follow some of the other top-level build
directives, like MAKE_DSYM.

Forcing 'all' to be the default target seems easier than making sure
all the invocations are correct going forward. This patch does this
using the .DEFAULT_GOAL directive rather than hoisting the 'all' rule
to be the first one of the file. It seems like this explicit approach
will be less prone to be broken in the future. Hopefully all the make
implementations we use support it.
2020-01-17 20:34:16 -08:00
Davide Italiano c1bc094f36 [TestQuoting] Use the fully qualified path for remote platforms.
Patch by Jason Molenda, fixes a test failure on arm64 devices.
2020-01-17 10:57:35 -08:00
Raphael Isemann 5ac610668a [lldb] Re-add NSDate formatter
This test had been overwritten by accident in ff75262f70.
This just readds the test with the correct content.
2020-01-17 08:56:05 +01:00
Vedant Kumar 6c4d377334 lldb: xfail TestCrossDSOTailCalls.py and TestCrossObjectTailCalls.py on arm/aarch64
This effectively reverts commit
8d2f252bb8, which went a bit too far and
disabled these on all non-Darwin systems.
2020-01-16 14:48:51 -08:00
Jonas Devlieghere 5f8e412188 [lldb/test] Exted test for CMTime data formatter
Cover more cases handled by the formatter.
2020-01-16 11:58:34 -08:00
Raphael Isemann 81eaa3ddd0 [lldb][NFC] Delete TestDataFormatterObjCNSDate.py
This test is just TestDataFormatterObjCNSData.py copied but without any changes
(and it therefore doesn't even test NSDate).

It's also failing as NSData has been changed by me in
4f244bba4f.
2020-01-16 17:28:07 +01:00
Pavel Labath 15a6df52ef [lldb/DWARF/test] Freshen up debug_names tests
These tests used "clang -mllvm -accel-tables=Dwarf" as a way to
guarantee that clang will emit the debug_names table. Unfortunately,
a change it clang made that insufficient (-gpubnames is required now
too), which rendered these tests ineffective. Since lldb automatically
falls back to the manual index, the tests didn't fail and this change
went largely unnoticed.

This patch updates the tests to really use debug_names (-gdwarf-5
-gpubnames) is the combination that works now, and it adds additional
checks to ensure the section is actually emitted.

Fortunately, no regressions crept in while these tests were disabled.
2020-01-16 16:25:49 +01:00
Raphael Isemann 39d6b6c21f [lldb][NFC] Migrate several tests to expect_expr
expect_expr is the stricter and safer way of testing these expressions.
2020-01-16 13:45:30 +01:00
Raphael Isemann 4f244bba4f [lldb] Fix asan failures in data-formatter-objc tests
The test is currently failing on some systems with ASAN enabled due to:
```
==22898==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x603000003da4 at pc 0x00010951c33d bp 0x7ffee6709e00 sp 0x7ffee67095c0
READ of size 5 at 0x603000003da4 thread T0
    #0 0x10951c33c in wrap_memmove+0x16c (libclang_rt.asan_osx_dynamic.dylib:x86_64+0x1833c)
    #1 0x7fff4a327f57 in CFDataReplaceBytes+0x1ba (CoreFoundation:x86_64+0x13f57)
    #2 0x7fff4a415a44 in __CFDataInit+0x2db (CoreFoundation:x86_64+0x101a44)
    #3 0x1094f8490 in main main.m:424
    #4 0x7fff77482084 in start+0x0 (libdyld.dylib:x86_64+0x17084)
0x603000003da4 is located 0 bytes to the right of 20-byte region [0x603000003d90,0x603000003da4)
allocated by thread T0 here:
    #0 0x109547c02 in wrap_calloc+0xa2 (libclang_rt.asan_osx_dynamic.dylib:x86_64+0x43c02)
    #1 0x7fff763ad3ef in class_createInstance+0x52 (libobjc.A.dylib:x86_64+0x73ef)
    #2 0x7fff4c6b2d73 in NSAllocateObject+0x12 (Foundation:x86_64+0x1d73)
    #3 0x7fff4c6b5e5f in -[_NSPlaceholderData initWithBytes:length:copy:deallocator:]+0x40 (Foundation:x86_64+0x4e5f)
    #4 0x7fff4c6d4cf1 in -[NSData(NSData) initWithBytes:length:]+0x24 (Foundation:x86_64+0x23cf1)
    #5 0x1094f8245 in main main.m:404
    #6 0x7fff77482084 in start+0x0 (libdyld.dylib:x86_64+0x17084)
```

The reason is that we create a string "HELLO" but get the size wrong (it's 5 bytes instead
of 4). Later on we read the buffer and pretend it is 5 bytes long, causing an OOB read
which ASAN detects.

In general this test probably needs some cleanup as it produces on macOS 10.15 around
100 compiler warnings which isn't great, but let's first get the bot green.
2020-01-16 09:59:07 +01:00
Vedant Kumar 8d2f252bb8 lldb: Run TestCrossDSOTailCalls.py and TestCrossObjectTailCalls.py on Darwin only
See https://bugs.llvm.org/show_bug.cgi?id=44561, these tests are failing
on an aarch64/Linux bot:

http://lab.llvm.org:8011/builders/lldb-aarch64-ubuntu/builds/655

For some reason the backtrace the tests are expecting to find is
incomplete.
2020-01-15 14:00:05 -08:00
Vedant Kumar f0120556c7 [DWARF] Emit DW_AT_call_return_pc as an address
This reverts D53469, which changed llvm's DWARF emission to emit
DW_AT_call_return_pc as a function-local offset. Such an encoding is not
compatible with post-link block re-ordering tools and isn't standards-
compliant.

In addition to reverting back to the original DW_AT_call_return_pc
encoding, teach lldb how to fix up DW_AT_call_return_pc when the address
comes from an object file pointed-to by a debug map. While doing this I
noticed that lldb's support for tail calls that cross a DSO/object file
boundary wasn't covered, so I added tests for that. This latter case
exercises the newly added return PC fixup.

The dsymutil changes in this patch were originally included in D49887:
the associated test should be sufficient to test DW_AT_call_return_pc
encoding purely on the llvm side.

Differential Revision: https://reviews.llvm.org/D72489
2020-01-15 13:02:23 -08:00
Raphael Isemann 13f22f5d59 [lldb] Add expect_expr function for testing expression evaluation in dotests.
Summary:
This patch adds a new function to lldbtest: `expect_expr`. This function is supposed to replace the current approach
of calling `expect`/`runCmd` with `expr`, `p` etc.

`expect_expr` allows evaluating expressions and matching their value/summary/type/error message without
having to do any string matching that might allow unintended passes (e.g., `self.expect("expr 3+4", substrs=["7"])`
can unexpectedly pass for results like `(Class7) $0 = 7`, `(int) $7 = 22`, `(int) $0 = 77` and so on).

This only uses the function in a few places to test and demonstrate it. I'll migrate the tests in follow up commits.

Reviewers: JDevlieghere, shafik, labath

Reviewed By: labath

Subscribers: christof, abidh, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D70314
2020-01-15 13:04:04 +01:00
Jonas Devlieghere 914b551eee [lldb/test] Add test for CMTime data formatter
Add a test for the CMTime data formatter. The coverage report showed
that this code path was untested.
2020-01-14 23:11:15 -08:00
Adrian Prantl b53d44b17a dotest.py: Add option to pass extra lldb settings to dotest
The primary motivation for this is to add another dimension to the
Swift LLDB test matrix, but this seems generally useful.

Differential Revision: https://reviews.llvm.org/D72662
2020-01-14 12:35:24 -08:00
Stella Stamenova ab72db7fc8 [lldb/test] test_breakpoints_func_full from TestNamespace.NamespaceBreakpointTestCase is now passing on Windows
After https://reviews.llvm.org/D70846, the test is now passing on Windows
2020-01-14 11:15:48 -08:00
Levon Ter-Grigoryan a705cf1acb Expression eval lookup speedup by not returning methods in ManualDWARFIndex::GetFunctions
Summary:
This change is connected with
https://reviews.llvm.org/D69843

In large codebases, we sometimes see Module::FindFunctions (when called from
ClangExpressionDeclMap::FindExternalVisibleDecls) returning huge amounts of
functions.

In current fix I trying to return only function_fullnames from ManualDWARFIndex::GetFunctions when eFunctionNameTypeFull is passed as argument.

Reviewers: labath, jarin, aprantl

Reviewed By: labath

Subscribers: shafik, clayborg, teemperor, arphaman, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D70846
2020-01-14 14:59:56 +01:00
Med Ismail Bennani 877723b7ce [lldb/Expression] Improve interpreter error message with a non-running target
When trying to interpret an expression with a function call, if the
process hasn't been launched, the expression fails to be interpreted
and the user gets the following  error message:

```error: Can't run the expression locally```

This message doesn't explain why the expression failed to be
interpreted, that's why this patch improves the error message that is
displayed when trying to run an expression while no process is running.

rdar://11991708

Differential Revision: https://reviews.llvm.org/D72510

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2020-01-14 13:06:58 +01:00
Raphael Isemann d8ffd601d5 [lldb][NFC] Rewrite python_api/rdar-12481949 test
Summary:
This renames the test `rdar-12481949` to `get-value-32bit-int` as it just tests that we return the
correct result get calling GetValueAsSigned/GetValueAsUnsigned on 32-bit integers.

It also deletes all the strange things going on in this test including resetting the data formatters (which are to my
knowledge not used to calculate scalar values) and testing Python's long integers (let's just assume that our Python
distribution works correctly). Also modernises the setup code.

Reviewers: labath, aprantl

Reviewed By: aprantl

Subscribers: JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D72593
2020-01-14 10:10:24 +01:00
Raphael Isemann 61b6a4e826 [lldb] Fix that SBThread.GetStopDescription is returning strings with uninitialized memory at the end.
Summary:
`SBThread.GetStopDescription` is a curious API as it takes a buffer length as a parameter that specifies
how many bytes the buffer we pass has. Then we fill the buffer until the specified length (or the length
of the stop description string) and return the string length. If the buffer is a nullptr however, we instead
return how many bytes we would have written to the buffer so that the user can allocate a buffer with
the right size and pass that size to a subsequent `SBThread.GetStopDescription` call.

Funnily enough, it is not possible to pass a nullptr via the Python SWIG bindings, so that might be the
first API in LLDB that is not only hard to use correctly but impossible to use correctly. The only way to
call this function via Python is to throw in a large size limit that is hopefully large enough to contain the
stop description (otherwise we only get the truncated stop description).

Currently passing a size limit that is smaller than the returned stop description doesn't cause the
Python bindings to return the stop description but instead the truncated stop description + uninitialized characters
at the end of the string. The reason for this is that we return the result of `snprintf` from the method
which returns the amount of bytes that *would* have been written (which is larger than the buffer).
This causes our Python bindings to return a string that is as large as full stop description but the
buffer that has been filled is only as large as the passed in buffer size.

This patch fixes this issue by just recalculating the string length in our buffer instead of relying on the wrong
return value. We also have to do this in a new type map as the old type map is also used for all methods
with the given argument pair `char *dst, size_t dst_len` (e.g. SBProcess.GetSTDOUT`). These methods have
different semantics for these arguments and don't null-terminate the returned buffer (they instead return the
size in bytes) so we can't change the existing typemap without breaking them.

Reviewers: labath, jingham

Reviewed By: labath

Subscribers: clayborg, shafik, abidh, JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D72086
2020-01-14 09:34:32 +01:00
Raphael Isemann 577efd09e3 [lldb] Revert ddf044290e for TestProcessAPI.py
It seems ddf044290e caused the test to
time out on the Windows bot, but it's unclear to me why.
2020-01-13 22:09:20 +01:00
Raphael Isemann c1fbede984 [lldb][NFC] Remove debug print statement from TestExprDiagnostics.py 2020-01-13 14:17:55 +01:00
Raphael Isemann ddf044290e [lldb] Mark several tests as not dependent on debug info
Summary:
This just adds `NO_DEBUG_INFO_TESTCASE` to tests that don't really exercise anything debug information specific
and therefore don't need to be rerun for all debug information variants.

Reviewers: labath, jingham, aprantl, mib, jfb

Reviewed By: aprantl

Subscribers: dexonsmith, JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D72447
2020-01-13 10:40:29 +01:00
Vedant Kumar 4c00dbf22d lldbutil: Forward ASan launch info to test inferiors
This allows an unsanitized test process which loads a sanitized DSO (the
motivating example is a Swift runtime dylib) to launch on Darwin.

rdar://57290132

Differential Revision: https://reviews.llvm.org/D71379
2020-01-10 14:52:51 -08:00
Tatyana Krasnukha 3eea082535 [lldb][tests] Make it possible to expect failure for a whole category
There already are decorators and "--excluded" option to mark test-cases/files
as expected to fail. However, when a new test file is added and it which relates
to a feature that a target doesn't support, this requires either adding decorators
to that file or modifying the file provided as "--excluded" option value.

The purpose of this patch is to avoid any modifications in such cases.
E.g. if a target doesn't support "watchpoints" and passes "--xfail-category watchpoint"
to dotest, a testing job will not fail after a new watchpoint-related test file is added.

Differential Revision: https://reviews.llvm.org/D71906
2020-01-10 17:37:55 +03:00
Tatyana Krasnukha e20a3b9b6c [lldb][tests][NFC] Unify variable naming convention 2020-01-10 17:37:55 +03:00
Tatyana Krasnukha b3af8ab7f8 [lldb][tests] Cleanup '.categories' 2020-01-10 16:39:38 +03:00
Tatyana Krasnukha 9ba1512748 [lldb][test] NFC, re-use _getTestPath() function 2020-01-10 16:31:03 +03:00
Tatyana Krasnukha e4d6729710 [lldb][tests] Take into account all parent's categories when traverse folders upwards
This is needed to not re-write parent's categories by categories of a nested folder,
e.g. commands/expression/completion specify "cmdline" category, however it still belongs
to parent's "expression" category.

The sentinel ".categories" in the test-suite root directory is no longer needed.

Differential Revision: https://reviews.llvm.org/D71905
2020-01-10 16:31:02 +03:00
Jaroslav Sevcik 902974277d Data formatters: Look through array element typedefs
Summary:
Motivation: When formatting an array of typedefed chars, we would like to display the array as a string.

The string formatter currently does not trigger because the formatter lookup does not resolve typedefs for array elements (this behavior is inconsistent with pointers, for those we do look through pointee typedefs). This patch tries to make the array formatter lookup somewhat consistent with the pointer formatter lookup.

Reviewers: teemperor, clayborg

Reviewed By: teemperor, clayborg

Subscribers: clayborg, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D72133
2020-01-10 11:45:24 +01:00
Jason Molenda 02113918ed When reading Aux file in chunks, read consecutive byte ranges
qemu has a very small maximum packet size (4096) and it actually
only uses half of that buffer for some implementation reason,
so when lldb asks for the register target definitions, the x86_64
definition is larger than 4096/2 and we need to fetch it in two parts.

This patch and test is fixing a bug in
GDBRemoteCommunicationClient::ReadExtFeature when reading a target
file in multiple parts.  lldb was assuming that it would always
get back the maximum packet size response (4096) instead of
using the actual size received and asking for the next group of
bytes.

We now have two tests in gdb_remote_client for unique features
of qemu - TestNestedRegDefinitions.py would test the ability
of lldb to follow multiple levels of xml includes; I opted to
create a separate TestRegDefinitionInParts.py test to test this
wrinkle in qemu's gdb remote serial protocol stub implementation.
Instead of combining both tests into a single test file.

<rdar://problem/49537922>
2020-01-09 16:05:38 -08:00
Raphael Isemann 782ad91cc4 [lldb] Fix that TestNoSuchArch.py was passing for the wrong reason
The command here failed due to the type in 'create' but the expect
did not actually check for the error message. This fixes the typo
and adds a check for the actuall error message we should see.
2020-01-09 12:09:48 +01:00
Jason Molenda 450073c639 Change the patterns to include the prefix '= ' so we don't pass errantly.
Looking at a sometimes-passing test case on a platform
where random values were being returned - sometimes
the expected digit ('1' or '2') would be included in the
random returned value.  Add a prefix to reduce the likelihood of
this a bit.
2020-01-06 15:20:13 -08:00
Jonas Devlieghere 3abc2927cb [lldb/Test] Move @skipIfAsan from test class to test methods.
skipTestIfFn can only be used to decorate a test method.
2020-01-06 09:53:06 -08:00
Jonas Devlieghere 8eba3fbb12 [lldb/Test] Temporarily skip TestFoundationDisassembly on the ASan bot.
This test is timing out on the sanitized bot on GreenDragon. Temporarily
disable it to increase the signal-to-noise ration.
2020-01-06 09:06:09 -08:00
Med Ismail Bennani df71f92fbb [lldb/Command] Add --force option for `watchpoint delete` command
Currently, there is no option to delete all the watchpoint without LLDB
asking for a confirmation. Besides making the watchpoint delete command
homogeneous with the breakpoint delete command, this option could also
become handy to trigger automated watchpoint deletion i.e. using
breakpoint actions.

rdar://42560586

Differential Revision: https://reviews.llvm.org/D72096

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2020-01-04 03:11:15 +01:00
Med Ismail Bennani 4117c8c019 Revert "[lldb/Command] Add --force option for `watchpoint delete` command"
This reverts commit 3620e5f28a.
2020-01-03 02:14:45 +01:00
Med Ismail Bennani 3620e5f28a [lldb/Command] Add --force option for `watchpoint delete` command
Currently, there is no option to delete all the watchpoint without LLDB
asking for a confirmation. Besides making the watchpoint delete command
homogeneous with the breakpoint delete command, this option could also
become handy to trigger automated watchpoint deletion i.e. using
breakpoint actions.

rdar://42560586

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2020-01-03 01:51:22 +01:00
Raphael Isemann 7ead008729 [lldb] Fix crash in AccessDeclContextSanity when copying FunctionTemplateDecl inside a record.
Summary:
We currently don't set access specifiers for function template declarations. This seems to be fine
as long as the function template is not declared inside any record in which case Clang asserts
with the following once we try to query it's access:
```
Assertion failed: (Access != AS_none && "Access specifier is AS_none inside a record decl"), function AccessDeclContextSanity,
```

This patch just marks these function template declarations as public to make Clang happy.

Reviewers: shafik, teemperor

Reviewed By: teemperor

Subscribers: JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D71909
2020-01-02 14:47:04 +01:00
Saleem Abdulrasool fb170fd652 tests: XFAIL/UNSUPPORTED tests on Windows
Now that we are building the python bindings on Windows once more, the
extended testsuite is running.  Mark a few failing tests and skip a few
tests which hang.  This should at least bring the bot back to green
without reverting the Python changes which are an improvement for the
build system and enable another ~35% of the test suite which was
previously disabled.
2020-01-01 14:22:49 -08:00
Muhammad Omair Javaid e25e3d7585 [lldb] Silent random xpass on aarch64-linux buildbot
This patch adds skipif decorator to TestWatchLocationWithWatchSet.py.
Decorator will trigger for aarch64-linux as this test passes randomly
causing buildbot failure.
2019-12-27 17:01:58 +05:00
Tatyana Krasnukha db1fa62bf8 [lldb][test] Don't include "test_common.h" in the debug macros test
GCC produces incorrect .debug_macro section when "-include" option is used:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93075.
2019-12-26 18:49:36 +03:00
Tatyana Krasnukha b7c45ac352 [lldb][NFC] Add "lldb-vscode" to all_categories
Required to make the category manually disableable.
2019-12-26 18:49:35 +03:00
Tatyana Krasnukha 04359f48f0 [lldb][NFC] Simplify if-return 2019-12-26 18:49:35 +03:00
Tatyana Krasnukha a58bd0e42c [lldb][tests] Platform triple can be None
If a remote target is not connected, SBPlatform's GetTriple function returns None.
2019-12-26 18:49:35 +03:00
Tatyana Krasnukha f57b35af2f [lldb][tests] Posix function strdup requires macro _POSIX_C_SOURCE 2019-12-26 18:49:34 +03:00
Saleem Abdulrasool 64c6bb3783 test: ensure that we dead-strip in the linker
`/OPT:REF` is needed for link to dead strip functions, `/Gy` by itself
is not sufficient.
2019-12-24 10:19:22 -08:00
Saleem Abdulrasool 4b0563f89f test: correct flags for Windows
Adjust the flags for the LLDB test on Windows.  This test was previously
not running, but after the fix to the python detection, we now run this.
2019-12-23 20:21:26 -08:00
Jonas Devlieghere a32f8dd195 [lldb/test] Skip editline tests when LLDB_ENABLE_LIBEDIT is off.
Add a new decorator that checks if LLDB was build with editline support
and mark the relevant tests as skipped when that's not the case.
2019-12-20 21:01:23 -08:00
Pavel Labath b04b92c3a4 [lldb/pexpect] Force-set the TERM environment variable
In some environments (typically, buildbots), this variable may not be
available. This can cause tests to behave differently.

Explicitly set the variable to "vt100" to ensure consistent test
behavior. It should not matter that we do not inherit the process TERM
variable, as the child process runs in a new virtual terminal anyway.
2019-12-20 15:19:41 +01:00
Raphael Isemann 29bd219497 [lldb] Added test for objc_direct calls with categories
As pointed out in D71694 this wasn't tested before in LLDB.
2019-12-20 11:07:30 +01:00
Pavel Labath 4cc5659a7a [lldb] Remove XFAIL from TestDeadStrip.py
Fixed by 92211b.
2019-12-20 10:04:25 +01:00
shafik 6a7df3a3f9 [ASTImporter][LLDB] Modifying ImportDeclContext(...) to ensure that we complete each FieldDecl of a RecordDecl when we are importing the definiton
This fix was motivated by a crashes in expression parsing during code generation in which we had a RecordDecl that had incomplete FieldDecl. During code generation when computing the layout for the RecordDecl we crash because we have several incomplete FieldDecl.

This fixes the issue by assuring that during ImportDefinition(...) for a RecordDecl we also import the definitions for each FieldDecl.

Differential Revision: https://reviews.llvm.org/D71378
2019-12-19 11:16:54 -08:00
Jason Molenda 997bc8b2e6 Add prototype for a function we call. 2019-12-18 14:18:52 -08:00
Raphael Isemann ff0102b32c [lldb] Remove modern-type-lookup
Summary:
As discussed on the mailing list [1] we have to make a decision for how to proceed with the modern-type-lookup.

This patch removes modern-type-lookup from LLDB. This just removes all the code behind the modern-type-lookup
setting but it does *not* remove any code from Clang (i.e., the ExternalASTMerger and the clang-import-test stay around
for now).

The motivation for this is that I don't think that the current approach of implementing modern-type-lookup
will work out. Especially creating a completely new lookup system behind some setting that is never turned on by anyone
and then one day make one big switch to the new system seems wrong. It doesn't fit into the way LLVM is developed and has
so far made the transition work much more complicated than it has to be.

A lot of the benefits that were supposed to come with the modern-type-lookup are related to having a better organization
in the way types move across LLDB and having less dependencies on unrelated LLDB code. By just looking at the current code (mostly
the ClangASTImporter) I think we can reach the same goals by just incrementally cleaning up, documenting, refactoring
and actually testing the existing code we have.

[1] http://lists.llvm.org/pipermail/lldb-dev/2019-December/015831.html

Reviewers: shafik, martong

Subscribers: rnkovacs, christof, arphaman, JDevlieghere, usaxena95, lldb-commits, friss

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D71562
2019-12-17 12:24:31 +01:00
Pavel Labath dcd14324dc [lldb-vscode] Centrally skip debug info variants for vscode tests
Previously each test was annotated manually. This does the same thing.
2019-12-17 11:08:52 +01:00
Raphael Isemann d5b54bbfaf [lldb] Add support for calling objc_direct methods from LLDB's expression evaluator.
Summary:
D69991 introduced `__attribute__((objc_direct))` that allows directly calling methods without message passing.
This patch adds support for calling methods with this attribute to LLDB's expression evaluator.

The patch can be summarised in that LLDB just adds the same attribute to our module AST when we find a
method with `__attribute__((objc_direct))` in our debug information.

Reviewers: aprantl, shafik

Reviewed By: shafik

Subscribers: JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D71196
2019-12-17 10:28:40 +01:00
Jim Ingham 9e9c5f0a63 Explicitly specify -std=c++11 and include <mutex> and <condition_variable>.
These files built on macos but not on Debian Linux.  Let's see if this fixes it.
2019-12-16 18:09:24 -08:00
Jim Ingham 434905b97d Run all threads when extending a next range over a call.
If you don't do this you end up running arbitrary code with
only one thread allowed to run, which can cause deadlocks.

<rdar://problem/56422478>

Differential Revision: https://reviews.llvm.org/D71440
2019-12-16 17:45:21 -08:00
Pavel Labath 755a66ebde [lldb] Use file-based synchronization in TestVSCode_attach
The is the best method we have at the moment for attach-style tests.
2019-12-16 14:10:42 +01:00
Jonas Devlieghere 4e26cf2cfb [lldb/CMake] Rename LLDB_DISABLE_PYTHON to LLDB_ENABLE_PYTHON
This matches the naming scheme used by LLVM and all the other optional
dependencies in LLDB.

Differential revision: https://reviews.llvm.org/D71482
2019-12-13 13:41:11 -08:00
Med Ismail Bennani 2c91d5ba83 LanguageRuntime: Simplify NSException::GetSummary() output
Summary:
Right now, NSException::GetSummary() has the following output:
"name: $exception_name - reason: $exception_reason"

It would be better to simplify the output by removing the name and only
showing the exception's reason. This way, annotations would look nicer in
the editor, and would be a shorter summary in the Variables Inspector.

Accessing the exception's name can still be done by expanding the
NSException object in the Variables Inspector.

rdar://54770115

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>

Subscribers: lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D71311

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2019-12-13 12:33:31 -08:00
Jonas Devlieghere 1ef7c4269b [lldb/Test] C++ test should use CXXFLAGS_EXTRAS
Thanks Ted Woodward for noticing this.
2019-12-13 10:00:59 -08:00
Raphael Isemann 9bace26a69 [lldb][NFC] Remove all `setUp` overrides that only call the parent implementation
Summary:
A lot of our tests copied the setUp code from our TestSampleTest.py:

```
    def setUp(self):
        # Call super's setUp().
        TestBase.setUp(self)
```

This code does nothing unless we actually do any setUp work in there, so let's remove all these method definitions.

Reviewers: labath, JDevlieghere

Reviewed By: labath

Subscribers: lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D71454
2019-12-13 12:34:49 +01:00
Raphael Isemann a52a11139c [lldb][NFC] Remove 'from __future__ import print_function' from all tests that don't actually call 'print()'
Summary:
A lot of tests do this trick but the vast majority of them don't even call `print()`.

Most of this patch was generated by a script that just looks at all the files and deletes the line if there is no `print (` or `print(` anywhere else in the file.
I checked the remaining tests manually and deleted the import if we never call print (but instead do stuff like `expr print(...)` and similar false-positives).
I also corrected the additional empty lines after the import in the files that I manually edited.

Reviewers: JDevlieghere, labath, jfb

Reviewed By: labath

Subscribers: dexonsmith, wuzish, nemanjai, kbarton, christof, arphaman, abidh, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D71452
2019-12-13 12:23:04 +01:00
Raphael Isemann 4286aca5d5 [lldb][NFC] Add reminder to TestSampleTest that setUp should be deleted if it not needed. 2019-12-13 12:10:05 +01:00
Muhammad Omair Javaid 5536c62f3c [lldb] Remove xpasses after pr44037 fix committed
This patch removes xpass decorator from tests which were failing due to
pr44037.

pr44037 was fixed by rev 6ce1a897b6
2019-12-13 12:30:58 +05:00