8f4d7eb518
Consistently declare 'extern "C"' variable in namespace __ubsan. No functionality change.
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llvm-svn: 166966
2012-10-29 21:01:59 +00:00
f0aac0b99e
Don't define an extern "C" variable in its first declaration, to appease a
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bogus gcc warning. Take this opportunity to move the declaration to the header,
since it's part of the API of this file.
llvm-svn: 166965
2012-10-29 20:54:34 +00:00
2f0d7d564c
-fcatch-undefined-behavior checking for appropriate vptr value: library side.
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llvm-svn: 166660
2012-10-25 02:07:02 +00:00
feea5d6fb4
Provide a slightly more helpful diagnostic if -fcatch-undefined-behavior finds
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a problem with __int128 arithmetic but the runtime was not built with __int128
support.
llvm-svn: 165913
2012-10-14 23:53:37 +00:00
130b748b72
Use a better test for __int128 support, which works on old GCC versions.
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llvm-svn: 165912
2012-10-14 23:28:55 +00:00
eea8a48218
Fix the bootstrap of CompilerRT with host compilers that don't support
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emulating 128-bit arithmetic on 32-bit x86 targets. This should get the
bootstrap back for GCC 4.6 at least.
Suggestions on better ways to do the detection here are welcome...
llvm-svn: 165863
2012-10-13 02:30:10 +00:00
7247b23efc
-fcatch-undefined-behavior: Runtime library support for trapping conversions to or
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from a floating-point type where the source value is not in the range of
representable values of the destination type.
llvm-svn: 165844
2012-10-12 22:57:15 +00:00
22cc16462e
-fcatch-undefined-behavior: handler for VLA bound which evaluates to a non-positive value.
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llvm-svn: 165582
2012-10-10 01:10:59 +00:00
b6fb381dba
-fcatch-undefined-behavior: store the type name directly at the end of a type descriptor. 5% binary size reduction due to fewer relocations.
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llvm-svn: 165571
2012-10-09 23:55:18 +00:00
68b3014cd3
Add a runtime diagnostics library for Clang's -fcatch-undefined-behavior.
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llvm-svn: 165533
2012-10-09 19:34:32 +00:00
Richard Smith