Commit Graph

174 Commits

Author SHA1 Message Date
Louis Dionne 2fd7d364cd [libc++] Make the verify-support feature implicit
Tests that require support for Clang-verify are already marked as such
explicitly by their extension, which is .verify.cpp. Requiring the use
of an explicit Lit feature is, after thought, not really helpful.

This is a change in design: we have been bitten in the past by tests not
being enabled when we thought they were. However, the issue was mostly
with file extensions being ignored. The fix for that is not to blindly
require explicit features all the time, but instead to report all files
that are in the suite but that don't match any known test format. This
can be implemented in a follow-up patch.
2020-04-30 11:47:12 -04:00
Louis Dionne 8c61114c53 [libc++/abi/unwind] Rename Lit features for no exceptions to 'no-exceptions'
Instead of having different names for the same Lit feature accross code
bases, use the same name everywhere. This NFC commit is in preparation
for a refactor where all three projects will be using the same Lit
feature detection logic, and hence it won't be convenient to use
different names for the feature.

Differential Revision: https://reviews.llvm.org/D78370
2020-04-22 08:25:27 -04:00
Louis Dionne 9a39d5a2ec [libc++] Move .fail.cpp tests with verify-support to .verify.cpp 2020-04-17 09:05:28 -04:00
Louis Dionne 7a6aaf9b23 [libc++] Remove workaround for .fail.cpp tests that don't have clang-verify markup
By renaming .fail.cpp tests that don't need clang-verify to .compile.fail.cpp,
the new test format will not try to compile these tests with clang-verify,
and the old test format will work just the same. However, this allows
removing a workaround that requires parsing each test looking for
clang-verify markup.

After this change, a .fail.cpp test should always have clang-verify markup.
When clang-verify is not supported by the compiler, we will just check that
these tests fail to compile. When clang-verify is supported, these tests
will be compiled with clang-verify whether they have markup or not (so
they should have markup, or they will fail).

This simplifies the test suite and also ensures that all of our .fail.cpp
tests provide clang-verify markup. If it's impossible for a test to have
clang-verify markup, it can be moved to a .compile.fail.cpp test, which
are unconditionally just checked for compilation failure.
2020-04-15 10:53:37 -04:00
Louis Dionne 7149bb7068 [libc++] NFC: Clean up a lot of old Lit features
The libc++ test suite has a lot of old Lit features used to XFAIL tests
and mark them as UNSUPPORTED. Many of them are to workaround problems on
old compilers or old platforms. As time goes by, it is good to go and
clean those up to simplify the configuration of the test suite, and also
to reflect the testing reality. It's not useful to have markup that gives
the impression that e.g. clang-3.3 is supported, when we don't really
test on it anymore (and hence several new tests probably don't have the
necessary markup on them).
2020-04-10 17:20:29 -04:00
Louis Dionne aaaa25e23d [libc++] Remove useless nothing_to_do.pass.cpp tests
The testing script used to test libc++ historically did not like directories
without any testing files, so these tests had been added. Since this is
not necessary anymore, we can now remove these files. This has the benefit
that the total number of tests reflects the real number of tests more
closely, and we also skip some unnecessary work (especially relevant when
running tests over SSH).

However, some nothing_to_do.pass.cpp tests actually serve the purpose of
documenting that an area of the Standard doesn't need to be tested, or is
tested elsewhere. These files are not removed by this commit.

Removal done with:

  import os
  import itertools
  for (dirpath, dirnames, filenames) in itertools.chain(os.walk('./libcxx/test'),
                                                        os.walk('./libcxxabi/test')):
      if len(filenames + dirnames) > 1 and \
         any(p == 'nothing_to_do.pass.cpp' for p in filenames):
          os.remove(os.path.join(dirpath, 'nothing_to_do.pass.cpp'))
2020-04-03 13:48:34 -04:00
Louis Dionne a5fa5f7cb8 [libc++] Do not force the use of -Werror in verify tests
Forcing -Werror and other warnings means that the test suite isn't
actually testing what most people are seeing in their code -- it seems
better and less arbitrary to compile these tests as close as possible
to the compiler default instead.

Removing -Werror also means that we get to differentiate between
diagnostics that are errors and those that are warnings, which makes
the test suite more precise.

Differential Revision: https://reviews.llvm.org/D76311
2020-03-26 07:54:45 -04:00
Louis Dionne aec82f9256 [libc++] Require the use of clang-verify in .fail.cpp tests that don't fail without it
Some tests do not fail at all when -verify is not supported, unless some
arbitrary warning flag is added to make them fail. We currently used
-Werror=unused-result to make them fail, but doing so makes the test
suite a lot more inscrutable. It seems better to just disable those
tests when -verify is not supported.

Differential Revision: https://reviews.llvm.org/D76256
2020-03-25 16:48:09 -04:00
Stephan T. Lavavej 437e0e5191 [libcxx][test][NFC] Fix comment typos.
(Testing git commit access.)
2019-10-22 15:22:13 -07:00
Nico Weber cc89063bff libcxx: Rename .hpp files in libcxx/test/support to .h
LLVM uses .h as its extension for header files.

Files renamed using:

    for f in libcxx/test/support/*.hpp; do git mv $f ${f%.hpp}.h; done

References to the files updated using:

    for f in $(git diff master | grep 'rename from' | cut -f 3 -d ' '); do
        a=$(basename $f);
        echo $a;
        rg -l $a libcxx | xargs sed -i '' "s/$a/${a%.hpp}.h/";
    done

HPP include guards updated manually using:

    for f in $(git diff master | grep 'rename from' | cut -f 3 -d ' '); do
      echo ${f%.hpp}.h ;
    done | xargs mvim

Differential Revision: https://reviews.llvm.org/D66104

llvm-svn: 369481
2019-08-21 00:14:12 +00:00
Marshall Clow 7fc6a55688 Add include for 'test_macros.h' to all the tests that were missing them. Thanks to Zoe for the (big, but simple) patch. NFC intended.
llvm-svn: 362252
2019-05-31 18:35:30 +00:00
Marshall Clow ccbe567f46 Get rid of a bunch of 'unused variable' warnings in test when run with debug_level set. NFC
llvm-svn: 359672
2019-05-01 11:25:58 +00:00
Louis Dionne 396145d0da [libc++] Fix error flags and exceptions propagated from input stream operations
Summary:
This is a re-application of r357533 and r357531. They had been reverted
because we thought the commits broke the LLDB data formatters, but it
turns out this was because only r357531 had been included in the CI
run.

Before this patch, we would only ever throw an exception if the badbit
was set on the stream. The Standard is currently very unclear on how
exceptions should be propagated and what error flags should be set by
the input stream operations. This commit changes libc++ to behave under
a different (but valid) interpretation of the Standard. This interpretation
of the Standard matches what other implementations are doing.

This effectively implements the wording in p1264r0. It hasn't been voted
into the Standard yet, however there is wide agreement that the fix is
correct and it's just a matter of time before the fix is standardized.

PR21586
PR15949
rdar://problem/15347558

Reviewers: mclow.lists, EricWF

Subscribers: christof, dexonsmith, cfe-commits

Differential Revision: https://reviews.llvm.org/D49863

llvm-svn: 357775
2019-04-05 16:33:37 +00:00
Billy Robert O'Neal III 7b9e4ebb03 [libcxx] [test] Fix test bugs in string.cons/copy_alloc.pass.cpp.
Fixed the inability to properly rebind the testing allocator, by making the
inner alloc_impl type a plain struct and making the operations templates. Before
rebind failed to compile complaining that a alloc_impl<T>* was not convertible
to an alloc_impl<U>*.

This enables the test to pass for MSVC++ once we provide the strong guarantee
for the copy assignment operator.

Reviewed as https://reviews.llvm.org/D60023

llvm-svn: 357545
2019-04-03 00:05:49 +00:00
Louis Dionne 38b7e74836 Revert "[libc++] Fix error flags and exceptions propagated from input stream operations"
This reverts commits r357533 and r357531, which broke the LLDB
data formatters. I'll hold off until we know how to fix the data
formatters accordingly.

llvm-svn: 357536
2019-04-02 22:21:27 +00:00
Louis Dionne 1754774369 [libc++] Fix error flags and exceptions propagated from input stream operations
Summary:
Before this patch, we would only ever throw an exception if the badbit
was set on the stream. The Standard is currently very unclear on how
exceptions should be propagated and what error flags should be set by
the input stream operations. This commit changes libc++ to behave under
a different (but valid) interpretation of the Standard. This interpretation
of the Standard matches what other implementations are doing.

I will submit a paper in San Diego to clarify the Standard such that the
interpretation used in this commit (and other implementations) is the only
possible one.

PR21586
PR15949
rdar://problem/15347558

Reviewers: mclow.lists, EricWF

Subscribers: christof, dexonsmith, cfe-commits

Differential Revision: https://reviews.llvm.org/D49863

llvm-svn: 357531
2019-04-02 21:43:07 +00:00
Marshall Clow 9ea0e473f0 Mark 'front()' and 'back()' as noexcept for array/deque/string/string_view. These are just rebranded 'operator[]', and should be noexcept like it is.
llvm-svn: 356435
2019-03-19 03:30:07 +00:00
Eric Fiselier dfce2dd21e Properly constrain basic_string(Iter, Iter, Alloc = A())
llvm-svn: 356140
2019-03-14 12:31:10 +00:00
Louis Dionne 25838c6dac [libc++] Mark several tests as XFAIL on macosx10.7
Those tests fail when linking against a new dylib but running against
macosx10.7. I believe this is caused by a duplicate definition of the
RTTI for exception classes in libc++.dylib and libc++abi.dylib, but
this matter still needs some investigation.

This issue was not caught previously because all the tests always linked
against the same dylib used for running (because LIT made it impossible
to do otherwise before r349171).

rdar://problem/46809586

llvm-svn: 354940
2019-02-27 00:57:57 +00:00
JF Bastien 2df59c5068 Support tests in freestanding
Summary:
Freestanding is *weird*. The standard allows it to differ in a bunch of odd
manners from regular C++, and the committee would like to improve that
situation. I'd like to make libc++ behave better with what freestanding should
be, so that it can be a tool we use in improving the standard. To do that we
need to try stuff out, both with "freestanding the language mode" and
"freestanding the library subset".

Let's start with the super basic: run the libc++ tests in freestanding, using
clang as the compiler, and see what works. The easiest hack to do this:

In utils/libcxx/test/config.py add:

  self.cxx.compile_flags += ['-ffreestanding']

Run the tests and they all fail.

Why? Because in freestanding `main` isn't special. This "not special" property
has two effects: main doesn't get mangled, and main isn't allowed to omit its
`return` statement. The first means main gets mangled and the linker can't
create a valid executable for us to test. The second means we spew out warnings
(ew) and the compiler doesn't insert the `return` we omitted, and main just
falls of the end and does whatever undefined behavior (if you're luck, ud2
leading to non-zero return code).

Let's start my work with the basics. This patch changes all libc++ tests to
declare `main` as `int main(int, char**` so it mangles consistently (enabling us
to declare another `extern "C"` main for freestanding which calls the mangled
one), and adds `return 0;` to all places where it was missing. This touches 6124
files, and I apologize.

The former was done with The Magic Of Sed.

The later was done with a (not quite correct but decent) clang tool:

  https://gist.github.com/jfbastien/793819ff360baa845483dde81170feed

This works for most tests, though I did have to adjust a few places when e.g.
the test runs with `-x c`, macros are used for main (such as for the filesystem
tests), etc.

Once this is in we can create a freestanding bot which will prevent further
regressions. After that, we can start the real work of supporting C++
freestanding fairly well in libc++.

<rdar://problem/47754795>

Reviewers: ldionne, mclow.lists, EricWF

Subscribers: christof, jkorous, dexonsmith, arphaman, miyuki, libcxx-commits

Differential Revision: https://reviews.llvm.org/D57624

llvm-svn: 353086
2019-02-04 20:31:13 +00:00
Chandler Carruth 57b08b0944 Update more file headers across all of the LLVM projects in the monorepo
to reflect the new license. These used slightly different spellings that
defeated my regular expressions.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351648
2019-01-19 10:56:40 +00:00
Marshall Clow 7dad0bd68b Second part of P0482 - char8_t. Reviewed as https://reviews.llvm.org/D55308
llvm-svn: 348828
2018-12-11 04:35:44 +00:00
Marshall Clow 4d64d7dd64 Implement P0966 - string::reserve should not shrink
llvm-svn: 347789
2018-11-28 18:18:34 +00:00
Stephan T. Lavavej dec8905e13 [libcxx] [test] Strip trailing whitespace. NFC.
llvm-svn: 346826
2018-11-14 03:06:06 +00:00
Billy Robert O'Neal III ed2f9a6094 [libcxx] [test] Add missing <stdexcept> in several tests.
Reviewed as https://reviews.llvm.org/D50420

llvm-svn: 339209
2018-08-08 00:40:32 +00:00
Marshall Clow 76b26852b6 Implement LWG 2946, 3075 and 3076. Reviewed as https://reviews.llvm.org/D48616
llvm-svn: 336132
2018-07-02 18:41:15 +00:00
Volodymyr Sapsai b9c0b637cc [libcxx] [test] Mark the test as unsupported by apple-clang-8.1.
llvm-svn: 333011
2018-05-22 18:46:16 +00:00
Marshall Clow 4a6f3c4710 Implement LWG3034: P0767R1 breaks previously-standard-layout types
llvm-svn: 328064
2018-03-21 00:36:05 +00:00
Mike Edwards 8e94aeb5f8 [libcxx][test] Adding apple-clang-9 to UNSUPPORTED in iter_alloc_deduction.fail.cpp.
After two failed attempts last week to make this work I am
going back to a known good method of making this test pass on
macOS...adding the current apple-clang version to the
UNSUPPORTED list.

During a previous patch review (https://reviews.llvm.org/D44103)
it was suggested to just XFAIL libcpp-no-deduction-guides
as was done to iter_alloc_deduction.pass.cpp. However
this caused a an unexpected pass on:
http://lab.llvm.org:8011/builders/libcxx-libcxxabi-x86_64-linux-ubuntu-gcc-tot-latest-std/builds/214

I then attempted to just mark libcpp-no-deduction-guides
as UNSUPPORTED, however this caused an additional bot
failure.  So I reverted everything (https://reviews.llvm.org/rCXX327191).

To solve this and get work unblocked I am adding
apple-clang-9 to the original UNSUPPORTED list.

llvm-svn: 327304
2018-03-12 18:06:37 +00:00
Mike Edwards b9abf3d299 [libcxx][test] Reverting r327178 and r327190.
Reverting changes made to iter_alloc_deduction.fail.cpp
as my changes seem to be making several Linux bots angry.

llvm-svn: 327191
2018-03-10 00:53:05 +00:00
Mike Edwards 231e19ce52 [libcxx][test] Marking libcpp-no-deduction-guides unsupported.
This fixes linux bot failures with r327178.

llvm-svn: 327190
2018-03-10 00:19:25 +00:00
Mike Edwards d0f595d77c XFAIL: libcpp-no-deduction-guides in libcxx/test/std/strings/basic.string/string.cons/iter_alloc_deduction.fail.cpp
Summary: Refactor the previous version method of marking each apple-clang version as UNSUPPORTED and just XFAIL'ing the libcpp-no-deduction-guides instead.  This brings this test inline with the same style as iter_alloc_deduction.pass.cpp

Reviewers: EricWF, dexonsmith

Reviewed By: EricWF

Subscribers: EricWF, vsapsai, vsk, cfe-commits

Differential Revision: https://reviews.llvm.org/D44103

llvm-svn: 327178
2018-03-09 22:13:12 +00:00
Stephan T. Lavavej c1fcd97ede [libcxx] [test] Fix MSVC warnings and errors.
test/std/numerics/numeric.ops/exclusive.scan/exclusive_scan.pass.cpp
test/std/numerics/numeric.ops/exclusive.scan/exclusive_scan_init_op.pass.cpp
test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan.pass.cpp
test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan_op.pass.cpp
test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan_op_init.pass.cpp
test/std/numerics/numeric.ops/transform.exclusive.scan/transform_exclusive_scan_init_bop_uop.pass.cpp
test/std/numerics/numeric.ops/transform.inclusive.scan/transform_inclusive_scan_bop_uop.pass.cpp
test/std/numerics/numeric.ops/transform.inclusive.scan/transform_inclusive_scan_bop_uop_init.pass.cpp
Fix MSVC x64 truncation warnings.
warning C4267: conversion from 'size_t' to 'int', possible loss of data

test/std/strings/basic.string/string.modifiers/string_append/push_back.pass.cpp
Fix MSVC uninitialized memory warning.
warning C6001: Using uninitialized memory 'vl'.

test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR20855_tuple_ref_binding_diagnostics.pass.cpp
Include <cassert> for the assert() macro.

Fixes D43273.

llvm-svn: 326120
2018-02-26 20:47:46 +00:00
Marshall Clow 3c83937370 Add another test case to the deduction guide for basic_string.
llvm-svn: 325740
2018-02-22 05:14:20 +00:00
Eric Fiselier 9491643c4b Fix test failure on compilers w/o deduction guides
llvm-svn: 325205
2018-02-15 02:41:19 +00:00
Marshall Clow 7f7891c427 The apple versions of clang don't support deduction guides yet.
llvm-svn: 324640
2018-02-08 19:33:03 +00:00
Marshall Clow 6aafc8b308 Once more, with feeling. Spell 'clang-4.0' correctly this time
llvm-svn: 324624
2018-02-08 17:06:08 +00:00
Marshall Clow 2a81d30471 Clean up string's deduction guides tests. Mark old versions of clang as unsupported, b/c they don't have deduction guides, even in C++17 mode
llvm-svn: 324619
2018-02-08 16:25:57 +00:00
Marshall Clow b0c4bb74a8 Temporarily comment out deduction guide tests while I figure out what to do with old bots
llvm-svn: 324573
2018-02-08 07:20:45 +00:00
Marshall Clow 6d9f750dec Implement deduction guide for basic_string as described in P0433
llvm-svn: 324569
2018-02-08 06:34:03 +00:00
Marshall Clow fc940277cb Fix PR#31454 - 'basic_string<T>::push_back() crashes if sizeof(T)>sizeof(long long)'. We were mishandling the small-string optimization calculations for very large 'characters'. This may be an ABI change (change the size of) strings of very large 'characters', but since they never worked, I'm not too concerned.
llvm-svn: 324531
2018-02-07 21:30:17 +00:00
Stephan T. Lavavej 4626c9a647 [libcxx] [test] Strip trailing whitespace. NFC.
llvm-svn: 319994
2017-12-07 00:50:23 +00:00
Marshall Clow 936a2fd4b4 Ooops. I checked in a test for a bug I haven't fixed yet. Temporrarily commented it out.
llvm-svn: 319693
2017-12-04 20:46:38 +00:00
Marshall Clow 800259c98d Implement P0457R2: 'String Prefix and Suffix Checking' for c++2a
llvm-svn: 319687
2017-12-04 20:11:38 +00:00
Billy Robert O'Neal III ba40b0566f Change (void) casts to TEST_IGNORE_NODISCARD, as requested by Eric. Reviewed as https://reviews.llvm.org/D40065
llvm-svn: 318804
2017-11-21 21:37:26 +00:00
Marshall Clow 25a7ba4524 More of P0600 - '[[nodiscard]] in the Library' mark empty() as nodiscard in string, string_view, and the free function std::empty(). Removed tabs from <string_view>, which is why the diff is so big.
llvm-svn: 318328
2017-11-15 20:02:27 +00:00
Billy Robert O'Neal III 83252766f9 Tolerate [[nodiscard]] annotations in the STL. Reviewed as https://reviews.llvm.org/D39033
llvm-svn: 318276
2017-11-15 07:40:37 +00:00
Stephan T. Lavavej e23dde6449 [libcxx] [test] Fix unused local typedef warnings.
llvm-svn: 314259
2017-09-26 23:08:43 +00:00
Stephan T. Lavavej 326df3d819 [libcxx] [test] Strip trailing whitespace.
llvm-svn: 314258
2017-09-26 23:08:41 +00:00
Marshall Clow 064028bb05 Add even more string_view tests. These found some bugs in the default parameter value for rfind/find_last_of/find_last_not_of
llvm-svn: 312693
2017-09-07 04:19:32 +00:00
Marshall Clow e2addb79b8 Another missing string_view test
llvm-svn: 312691
2017-09-07 03:03:48 +00:00
Marshall Clow b6d73126c8 Add more string_view tests
llvm-svn: 312690
2017-09-07 02:46:09 +00:00
Stephan T. Lavavej 9ea675ef8c [libcxx] [test] Change comments to say C++ instead of c++. NFC.
This makes them consistent (many comments already used uppercase).

The special REQUIRES, UNSUPPORTED, and XFAIL comments are excluded from this change.

llvm-svn: 309468
2017-07-29 00:55:35 +00:00
Stephan T. Lavavej 4159db7698 [libcxx] [test] Untabify, NFC.
llvm-svn: 309464
2017-07-29 00:55:10 +00:00
Billy Robert O'Neal III 4deabc97a1 Add asserts that the nullptr is maintained in string erase operations.
llvm-svn: 303899
2017-05-25 19:01:14 +00:00
Billy Robert O'Neal III 362ea7329f Fix possible loss of data warnings on amd64
In T_size_size.pass, there is an explicit template argument to std::min to ask
for unsigned, to avoid type deduction errors. However, C1XX' warnings still
hate this use, because a 64 bit value (a size_t) is being passed to a function
accepting an unsigned (a 32 bit value).

Instead, change the tests to pass around std::size_t instances, and explicitly
narrow when constructing the string type under test. This also allows
removal of explicit template arguments to std::min.

llvm-svn: 302473
2017-05-08 21:54:53 +00:00
Mehdi Amini e9c66ad9fa Add markup for libc++ dylib availability
Libc++ is used as a system library on macOS and iOS (amongst others). In order
for users to be able to compile a binary that is intended to be deployed to an
older version of the platform, clang provides the
availability attribute <https://clang.llvm.org/docs/AttributeReference.html#availability>_
that can be placed on declarations to describe the lifecycle of a symbol in the
library.

See docs/DesignDocs/AvailabilityMarkup.rst for more information.

Differential Revision: https://reviews.llvm.org/D31739

llvm-svn: 302172
2017-05-04 17:08:54 +00:00
Billy Robert O'Neal III 49ee2a0f28 Resolve unused local typedef warning in test.
llvm-svn: 300937
2017-04-21 01:10:04 +00:00
Eric Fiselier 414d17c67c Cleanup _LIBCPP_HAS_NO_<c++11-feature> in the string library.
llvm-svn: 300633
2017-04-19 00:28:44 +00:00
Eric Fiselier e84fcb5f3d Fix PR32642 - string::insert and string::append don't work with move_iterator.
llvm-svn: 300397
2017-04-15 06:49:02 +00:00
Marshall Clow 4069c2bc48 Implement LWG#2761: 'basic_string should require that charT match traits::char_type'. Tests for string_view, too
llvm-svn: 297872
2017-03-15 18:41:11 +00:00
Eric Fiselier ae85a922d5 Work around test failure on 32 bit OS X
llvm-svn: 296840
2017-03-02 23:18:40 +00:00
Steven Wu 1f27eaf5aa Remove XFAIL in implicit_deduction_guides tests
The clang assertion causing these tests failing with sanitizer is fixed
in r295794. All the bots running libcxx tests should be upgraded and
running the compiler with the fix.

llvm-svn: 296385
2017-02-27 21:10:41 +00:00
Eric Fiselier e427e4b81b Work around Clang assertion when testing C++17 deduction guides with '-g'.
llvm-svn: 295417
2017-02-17 05:04:09 +00:00
Eric Fiselier dd3ba794ef [libc++] Fix PR 31938 - std::basic_string constructors use non-deductible parameter types.
Summary:
This patch fixes http://llvm.org/PR31938. The description below is copy/pasted from the bug:

The standard says:

template<class charT, class traits = char_traits<charT>,
         class Allocator = allocator<charT>>
class basic_string {
  using value_type = typename traits::char_type;
  // ...
  basic_string(const charT* s, const Allocator& a = Allocator());
};

libc++ actually chooses to declare the constructor as

  basic_string(const value_type* s, const Allocator& a = Allocator());

The implicit deduction guides from class template argument deduction make what was previously an implementation detail visible:

std::basic_string s = "foo"; // error, can't deduce charT.

The constructor in question is in the libc++ DSO, but fortunately it looks like fixing this will not result in an ABI break.


@rsmith How does this look? I did more than just the constructors mentioned in the PR, but IDK how far to take it.


Reviewers: mclow.lists, rsmith

Reviewed By: rsmith

Subscribers: cfe-commits, rsmith

Differential Revision: https://reviews.llvm.org/D29863

llvm-svn: 295393
2017-02-17 01:17:10 +00:00
Stephan T. Lavavej 134ed9986a [libcxx] [test] Strip trailing whitespace.
No functional change, no code review.

llvm-svn: 294161
2017-02-05 22:48:27 +00:00
Stephan T. Lavavej 50bd9576f0 [libcxx] [test] Fix Clang -Wunused-local-typedef, part 2/3.
These typedefs were completely unused.

Fixes D29136.

llvm-svn: 294155
2017-02-05 22:47:41 +00:00
Stephan T. Lavavej 03fe6e2da2 [libcxx] [test] Fix Clang -Wunused-local-typedef, part 1/3.
Guard typedefs and static_asserts with _LIBCPP_VERSION.

test/std/containers/sequences/vector.bool/move_assign_noexcept.pass.cpp
test/std/containers/sequences/vector.bool/move_noexcept.pass.cpp
test/std/containers/sequences/vector.bool/swap_noexcept.pass.cpp
Additionally deal with conditional compilation.

test/std/containers/associative/map/map.cons/move_noexcept.pass.cpp
test/std/containers/associative/multimap/multimap.cons/move_noexcept.pass.cpp
Additionally deal with typedefs used by other typedefs.

Fixes D29135.

llvm-svn: 294154
2017-02-05 22:47:09 +00:00
Marshall Clow 6f033f0c30 Fix up some no-exception compile failures
llvm-svn: 293623
2017-01-31 13:12:32 +00:00
Alex Lorenz 143b58577d Workaround new -Wshadow warning introduced by r293599
llvm-svn: 293619
2017-01-31 12:37:48 +00:00
Marshall Clow d107be846f Fix PR#31779: basic_string::operator= isn't exception safe.
llvm-svn: 293599
2017-01-31 03:40:52 +00:00
Eric Fiselier 38590b3845 Fix std::string assignment ambiguity from braced initializer lists.
When support for `basic_string_view` was added to string it also
added new assignment operators from `basic_string_view`. These caused
ambiguity when assigning from a braced initializer. This patch fixes
that regression by making the basic_string_view assignment operator
rank lower in overload resolution by making it a template.

llvm-svn: 292276
2017-01-17 22:10:32 +00:00
Stephan T. Lavavej 286adee501 [libcxx] [test] Fix MSVC x64 truncation warnings with 32-bit allocator size_type/difference_type.
test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_container_alloc.pass.cpp
test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_container_alloc.pass.cpp
Iterate with C::size_type because that's what operator[] takes.

test/std/containers/sequences/vector/contiguous.pass.cpp
test/std/strings/basic.string/string.require/contiguous.pass.cpp
Add static_cast<typename C::difference_type> because that's what the iterator's operator+ takes.

Fixes D27777.

llvm-svn: 289734
2016-12-14 22:46:46 +00:00
Stephan T. Lavavej f2e24f568b [libcxx] [test] Fix MSVC warning C4244 "conversion from 'X' to 'Y', possible loss of data", part 7/7.
test/std/input.output/iostream.format/input.streams/istream.unformatted/get.pass.cpp
Add static_cast<char> because basic_istream::get() returns int_type (N4606 27.7.2.3 [istream.unformatted]/4).

test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/minus1.pass.cpp
Add static_cast<char> because toupper() returns int (C11 7.4.2.2/1).

test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.ops/assign_t.pass.cpp
This test is intentionally writing doubles to ostream_iterator<int>.
It's silencing -Wliteral-conversion for Clang, so I'm adding C4244 silencing for MSVC.

test/std/language.support/support.limits/limits/numeric.limits.members/infinity.pass.cpp
Given `extern float zero;`, the expression `1./zero` has type double, which emits a truncation warning
when being passed to test<float>() taking float. The fix is to say `1.f/zero` which has type float.

test/std/numerics/complex.number/cmplx.over/arg.pass.cpp
test/std/numerics/complex.number/cmplx.over/norm.pass.cpp
These tests were constructing std::complex<double>(x, 0), emitting truncation warnings when x is long long.
Saying static_cast<double>(x) avoids this.

test/std/numerics/rand/rand.eng/rand.eng.lcong/seed_result_type.pass.cpp
This was using `int s` to construct and seed a linear_congruential_engine<T, stuff>, where T is
unsigned short/unsigned int/unsigned long/unsigned long long. That emits a truncation warning in the
unsigned short case. Because the range [0, 20) is tiny and we aren't doing anything else with the index,
we can just iterate with `T s`.

test/std/re/re.traits/value.pass.cpp
regex_traits<wchar_t>::value()'s first parameter is wchar_t (N4606 28.7 [re.traits]/13). This loop is
using int to iterate through ['g', 0xFFFF), emitting a truncation warning from int to wchar_t
(which is 16-bit for some of us). Because the bound is exclusive, we can just iterate with wchar_t.

test/std/strings/basic.string/string.cons/size_char_alloc.pass.cpp
This test is a little strange. It's trying to verify that basic_string's (InIt, InIt) range constructor
isn't confused by "N copies of C" when N and C have the same integral type. To do this, it was
testing (100, 65), but that eventually emits truncation warnings from int to char. There's a simple way
to avoid this - passing (static_cast<char>(100), static_cast<char>(65)) also exercises the disambiguation.
(And 100 is representable even when char has a signed range.)

test/std/strings/string.view/string.view.hash/string_view.pass.cpp
Add static_cast<char_type> because `'0' + i` has type int.

test/std/utilities/function.objects/bind/func.bind/func.bind.bind/nested.pass.cpp
What's more horrible than nested bind()? pow() overloads! This operator()(T a, T b) was assuming that
std::pow(a, b) can be returned as T. (In this case, T is int.) However, N4606 26.9.1 [cmath.syn]/2
says that pow(int, int) returns double, so this was truncating double to int.
Adding static_cast<T> silences this.

test/std/utilities/function.objects/unord.hash/integral.pass.cpp
This was iterating `for (int i = 0; i <= 5; ++i)` and constructing `T t(i);` but that's truncating
when T is short. (And super truncating when T is bool.) Adding static_cast<T> silences this.

test/std/utilities/utility/exchange/exchange.pass.cpp
First, this was exchanging 67.2 into an int, but that's inherently truncating.
Changing this to static_cast<short>(67) avoids the truncation while preserving the
"what if T and U are different" test coverage.
Second, this was exchanging {} with the explicit type float into an int, and that's also
inherently truncating. Specifying short is just as good.

test/std/utilities/utility/pairs/pairs.spec/make_pair.pass.cpp
Add static_cast<short>. Note that this affects template argument deduction for make_pair(),
better fulfilling the test's intent. For example, this was saying
`typedef std::pair<int, short> P1; P1 p1 = std::make_pair(3, 4);` but that was asking
make_pair() to return pair<int, int>, which was then being converted to pair<int, short>.
(pair's converting constructors are tested elsewhere.)
Now, std::make_pair(3, static_cast<short>(4)) actually returns pair<int, short>.
(There's still a conversion from pair<nullptr_t, short> to pair<unique_ptr<int>, short>.)

Fixes D27544.

llvm-svn: 289111
2016-12-08 21:38:57 +00:00
Stephan T. Lavavej d4b83e6dfd [libcxx] [test] D27269: Fix MSVC x64 warning C4267 "conversion from 'size_t' to 'int' [or 'unsigned int'], possible loss of data", part 3/4.
test/std/containers/sequences/vector.bool/copy.pass.cpp
test/std/containers/sequences/vector.bool/copy_alloc.pass.cpp
test/std/containers/sequences/vector/vector.cons/copy.pass.cpp
test/std/containers/sequences/vector/vector.cons/copy_alloc.pass.cpp
Change "unsigned s = x.size();" to "typename C::size_type s = x.size();"
because that's what it returns.

test/std/strings/basic.string/string.cons/pointer_alloc.pass.cpp
Include <cstddef>, then change "unsigned n = T::length(s);"
to "std::size_t n = T::length(s);" because that's what char_traits returns.

test/std/strings/basic.string/string.cons/substr.pass.cpp
Change unsigned to typename S::size_type because that's what str.size() returns.

test/std/utilities/template.bitset/bitset.cons/ull_ctor.pass.cpp
This was needlessly truncating std::size_t to unsigned.
It's being used to compare and initialize std::size_t.

llvm-svn: 288753
2016-12-06 01:14:51 +00:00
Stephan T. Lavavej e9c728899f [libcxx] [test] D27025: Fix MSVC warning C4389 "signed/unsigned mismatch", part 12/12.
Various changes:

test/std/algorithms/alg.sorting/alg.merge/inplace_merge.pass.cpp
This is comparing value_type to unsigned. value_type is sometimes int and sometimes struct S (implicitly constructible from int).
static_cast<value_type>(unsigned) silences the warning and doesn't do anything bad (as the values in question are small).

test/std/algorithms/alg.sorting/alg.nth.element/nth_element_comp.pass.cpp
This is comparing an int remote-element to size_t. The values in question are small and non-negative,
so either type is fine. I think that converting int to size_t is marginally better here than the reverse.

test/std/containers/sequences/deque/deque.cons/size.pass.cpp
DefaultOnly::count is int (and non-negative). When comparing to unsigned, use static_cast<unsigned>.

test/std/strings/basic.string/string.access/index.pass.cpp
We're comparing char to '0' through '9', but formed with the type size_t. Add static_cast<char>.

test/std/utilities/template.bitset/bitset.cons/ull_ctor.pass.cpp
Include <cstddef> for pedantic correctness (this test was already mentioning std::size_t).

"v[i] == (i & 1)" was comparing bool to size_t. Saying "v[i] == ((i & 1) != 0)" smashes the RHS to bool.

llvm-svn: 288749
2016-12-06 01:13:51 +00:00
Stephan T. Lavavej 68a694b800 [libcxx] [test] D27022: Fix MSVC warning C4389 "signed/unsigned mismatch", part 9/12.
Add static_cast<std::size_t> to more comparisons. (Performed manually, unlike part 8/12.)

Also, include <cstddef> when it wasn't already being included.

llvm-svn: 288746
2016-12-06 01:13:14 +00:00
Stephan T. Lavavej fbfb2ab63e [libcxx] [test] D27021: Fix MSVC warning C4389 "signed/unsigned mismatch", part 8/12.
Add static_cast<std::size_t> when comparing distance() to size().

These replacements were performed programmatically with regex_replace():

const vector<pair<regex, string>> reg_fmt = {
    { regex(R"(assert\((\w+)\.size\(\) == std::distance\((\w+, \w+)\)\))"),
        "assert($1.size() == static_cast<std::size_t>(std::distance($2)))" },
    { regex(R"(assert\(distance\((\w+\.begin\(\), \w+\.end\(\))\) == (\w+)\.size\(\)\))"),
        "assert(static_cast<std::size_t>(distance($1)) == $2.size())" },
    { regex(R"(assert\(std::distance\((\w+\.\w*begin\(\), \w+\.\w*end\(\))\) == (\w+)\.size\(\)\))"),
        "assert(static_cast<std::size_t>(std::distance($1)) == $2.size())" },
};

Also, include <cstddef> when it wasn't already being included.

llvm-svn: 288745
2016-12-06 01:12:34 +00:00
Roger Ferrer Ibanez 9d03c03858 Protect std::string tests under libcpp-no-exceptions
Skip tests that expect an exception be thrown and/or disable
unreachable catch handlers.

Differential Revision: https://reviews.llvm.org/D26612

llvm-svn: 288158
2016-11-29 16:40:19 +00:00
Roger Ferrer Ibanez d056b5be51 Reverting wrong diff
I managed to confuse me with two reviews of the same thing and ended commiting the wrong one.

llvm-svn: 287868
2016-11-24 11:28:02 +00:00
Roger Ferrer Ibanez c65daf3e4a Protect std::string tests under libcpp-no-exceptions
Skip tests that expect an exception be thrown and/or disable
unreachable catch handlers.

Differential Revision: https://reviews.llvm.org/D26608

llvm-svn: 287865
2016-11-24 11:15:09 +00:00
Stephan T. Lavavej d72ece6462 [libcxx] [test] D27027: Strip trailing whitespace.
llvm-svn: 287829
2016-11-23 22:03:28 +00:00
Stephan T. Lavavej 562f28a6ed [libcxx] [test] D27018: Fix MSVC warning C4018 "signed/unsigned mismatch", part 5/12.
Various changes:

test/std/algorithms/alg.sorting/alg.binary.search/binary.search/binary_search.pass.cpp
Change M from unsigned to int. It's compared against "int x",
and we binary_search() for it within a vector<int>.

test/std/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.f/eval.pass.cpp
test/std/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.f/eval_param.pass.cpp
Add static_cast<unsigned> when comparing int to unsigned.

test/std/strings/basic.string/string.cons/size_char_alloc.pass.cpp
Change unsigned indices to int when we're being given int as a bound.

llvm-svn: 287825
2016-11-23 22:02:35 +00:00
Marshall Clow f7182fe464 Missed one of the try blocks the first time :-(. Thanks to Renato for the heads up.
llvm-svn: 286932
2016-11-15 05:03:22 +00:00
Marshall Clow 209fc55b01 Missed a test with exceptions disabled earlier. Oops.
llvm-svn: 286883
2016-11-14 20:38:43 +00:00
Marshall Clow 1c7fe126ee Fixes for LWG 2598, 2686, 2739, 2742, 2747, and 2759, which were adopted last week in Issaquah
llvm-svn: 286858
2016-11-14 18:22:19 +00:00
Stephan T. Lavavej 4dc0ed8390 [libcxx] [test] D26314: Fix MSVC warning C4189 "local variable is initialized but not referenced".
test/std/depr/depr.c.headers/inttypes_h.pass.cpp
test/std/input.output/file.streams/c.files/cinttypes.pass.cpp
test/std/input.output/iostream.forward/iosfwd.pass.cpp
Add test() to avoid a bunch of void-casts, although we still need a few.

test/std/input.output/iostream.format/quoted.manip/quoted.pass.cpp
skippingws was unused (it's unclear to me whether this was mistakenly copy-pasted from round_trip() below).

test/std/localization/locale.categories/category.collate/locale.collate/types.pass.cpp
test/std/localization/locale.categories/category.ctype/facet.ctype.special/types.pass.cpp
test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char.pass.cpp
test/std/localization/locale.categories/category.ctype/locale.codecvt/types_wchar_t.pass.cpp
test/std/localization/locale.categories/category.ctype/locale.ctype/types.pass.cpp
test/std/localization/locale.categories/facet.numpunct/locale.numpunct/types.pass.cpp
test/std/localization/locales/locale.global.templates/use_facet.pass.cpp
When retrieving facets, the references are unused.

test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long.pass.cpp
test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_unsigned_long.pass.cpp
"std::ios_base::iostate err = ios.goodbit;" was completely unused here.

test/std/localization/locale.categories/category.time/locale.time.get/time_base.pass.cpp
test/std/numerics/c.math/ctgmath.pass.cpp
test/std/numerics/rand/rand.device/entropy.pass.cpp
test/std/numerics/rand/rand.device/eval.pass.cpp
test/std/strings/basic.string/string.modifiers/string_copy/copy.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eof.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eof.pass.cpp
test/std/thread/futures/futures.promise/dtor.pass.cpp
test/std/thread/futures/futures.task/futures.task.members/dtor.pass.cpp
test/std/thread/thread.condition/thread.condition.condvar/wait_for_pred.pass.cpp
These variables are verifying types but are otherwise unused.

test/std/strings/basic.string/string.capacity/reserve.pass.cpp
old_cap was unused (it's unclear to me whether it was intended to be used).

test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/eq.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/lt.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/lt.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar.t/eq.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar.t/lt.pass.cpp
These tests contained unused characters.

llvm-svn: 286847
2016-11-14 17:35:14 +00:00
Roger Ferrer Ibanez 8a915ed644 Protect exceptional paths under libcpp-no-exceptions
These tests are of the form

try {
   action-that-may-throw
   assert(!exceptional-condition)
   assert(some-other-facts)
 } catch (relevant-exception) {
   assert(exceptional-condition)
 }

Under libcpp-no-exceptions there is still value in verifying
some-other-facts while avoiding the exceptional case. So for these tests
just conditionally check some-other-facts if exceptional-condition is
false. When exception are supported make sure that a true
exceptional-condition throws an exception

Differential Revision: https://reviews.llvm.org/D26136

llvm-svn: 285697
2016-11-01 15:46:16 +00:00
Roger Ferrer Ibanez 3565c96d86 Change from "XFAIL: libcpp-no-exceptions" to "UNSUPPORTED: libcpp-no-exceptions" tests that only check exceptions and nothing else
This is a follow up of D24562.

These tests do not check anything but exceptions, so it makes sense to mark
them as UNSUPPORTED under a library built without exceptions.

Differential Revision: https://reviews.llvm.org/D26075

llvm-svn: 285550
2016-10-31 08:47:53 +00:00
Eric Fiselier 7ca76565e7 Fix _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY to always have default visibility.
This prevent the symbols from being both externally available and hidden, which
causes them to be linked incorrectly. This is only a problem when the address
of the function is explicitly taken since it will always be inlined otherwise.

This patch fixes the issues that caused r285456 to be reverted, and can
now be reapplied.

llvm-svn: 285531
2016-10-31 02:07:23 +00:00
Eric Fiselier 009fb08d14 Fix shadow warnings in string_view tests. Patch from STL@microsoft.com
llvm-svn: 285011
2016-10-24 20:10:00 +00:00
Marshall Clow 67be6ff839 Add another append test for basic_string
llvm-svn: 283331
2016-10-05 15:47:13 +00:00
Marshall Clow a8fd1e4be0 Fix a few static_asserts that need extra parens on -03
llvm-svn: 282343
2016-09-24 23:52:21 +00:00
Marshall Clow 54f0981ebd Implement proposed resolution for LWG#2758. Reviewed as D24446. Normally, I would wait for these to be voted upon at a committee meeting (November), but the current draft standard is broken, and this should fix it. (And if it doesn't, we want to know about it soonest)
llvm-svn: 282342
2016-09-24 22:45:42 +00:00
Marshall Clow a77bb8ef34 Fix PR#30303 - no matching function for call to '__ptr_in_range'
llvm-svn: 280779
2016-09-07 03:32:06 +00:00
Marshall Clow 7e1a23001d Fix Bug 30240 - std::string: append(first, last) error when aliasing. Add test cases for append/insert/assign/replace while we're at it, and fix a similar bug in insert.
llvm-svn: 280643
2016-09-05 01:54:30 +00:00
Marshall Clow 2a10c960fa Support allocators with explicit conversion constructors. Fixes bug #29000
llvm-svn: 278904
2016-08-17 05:58:40 +00:00
Eric Fiselier 93b8e51ebb Make dtor_noexcept.pass.cpp tests more portable. Patch from STL@microsoft.com
llvm-svn: 276595
2016-07-25 00:50:32 +00:00
Eric Fiselier 2cd516e049 Make swap_noexcept.pass.cpp tests more portable. Patch from STL@microsoft.com.
See D21820 for more information (https://reviews.llvm.org/D21820).

llvm-svn: 276590
2016-07-25 00:15:29 +00:00
Marshall Clow 053d81ceeb Implement std::string_view as described in http://wg21.link/P0254R1. Reviewed as https://reviews.llvm.org/D21459
llvm-svn: 276238
2016-07-21 05:31:24 +00:00