Commit Graph

7 Commits

Author SHA1 Message Date
Jason Molenda 62e0681afb Add -Wimplicit-fallthrough command line option to clang in
the xcode project file to catch switch statements that have a
case that falls through unintentionally.

Define LLVM_FALLTHROUGH to indicate instances where a case has code
and intends to fall through.  This should be in llvm/Support/Compiler.h;
Peter Collingbourne originally checked in there (r237766), then
reverted (r237941) because he didn't have time to mark up all the
'case' statements that were intended to fall through.  I put together
a patch to get this back in llvm http://reviews.llvm.org/D17063 but
it hasn't been approved in the past week.  I added a new
lldb-private-defines.h to hold the definition for now.

Every place in lldb where there is a comment that the fall-through
is intentional, I added LLVM_FALLTHROUGH to silence the warning.
I haven't tried to identify whether the fallthrough is a bug or
not in the other places.

I haven't tried to add this to the cmake option build flags.
This warning will only work for clang.

This build cleanly (with some new warnings) on macosx with clang
under xcodebuild, but if this causes problems for people on other
configurations, I'll back it out.

llvm-svn: 260930
2016-02-16 04:14:33 +00:00
Bruce Mitchener e171da5cb7 Fix typos.
Summary: Fix a bunch of typos.

Reviewers: clayborg

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D11386

llvm-svn: 242856
2015-07-22 00:16:02 +00:00
Jason Molenda ebd01b0ae6 Guard against the case where the Write method is called with
an argument pointing into the middle of m_buffer and then
Write() calls GrowBuffer() to resize m_buffer, leaving 
the content argument pointing into deallocated memory.

Patch by Kate Stone.
<rdar://problem/20756722> 

llvm-svn: 236286
2015-04-30 23:42:56 +00:00
Kate Stone 641e9f8c69 Improvements to FastDemangler to correct parsing of <local-name> encodings for string literal and parameter/entity cases. Patch courtesy of slydiman.
llvm-svn: 223569
2014-12-06 01:42:41 +00:00
Jason Molenda 61e0a3ef1f Put #if 0 blocks around three sections of code that are intentionally
unreachable so we don't get warnings about them.

Completely initialize a structure instead of leaving some of its fields
potentially indeterminate (although in reality they would all be set 
before use -- but the compiler warning doesn't know that).

clang warning.

llvm-svn: 220017
2014-10-17 01:36:20 +00:00
Jason Molenda 026aa4962a Mechanical change to FastDemangle to make it closer to the lldb
coding conventions.  Lots of whitespace et al changes but no
content changes.

llvm-svn: 219856
2014-10-15 22:11:15 +00:00
Kate Stone e2b2186652 Dramatically improves C++ demangling performance by introducing a new implementation that is much faster than the existing demangler. While not yet complete, the new demangler will fail gracefully when it encounters symbols it isn’t prepared to deal with. In these cases LLDB will fall back to using the full demangler to prevent a loss in functionality. On sizable code bases the fast path succeeds 95% of the time, providing a significant net win.
The new implementation is located in source/Core/FastDemangle.cpp.  It’s fairly straightforward C code with a few basic C++ extensions.  It should compile with little or no change on a variety of platforms, but of course it is still only useful for symbols that comply with the Itanium ABI mangling spec (plus a few Clang extensions.)

<rdar://problem/15397553> <rdar://problem/15794867>

llvm-svn: 213671
2014-07-22 17:03:38 +00:00