[cfe-dev] Feature request & new analyze regression

[Andy Wick]

I track my regression down to the following change with
llvm/tools/clang/lib/Analysis/SVals.cpp

If I comment it out I work again.

------------------------------------------------------------------------
r93146 | zhongxingxu | 2010-01-11 01:52:53 -0500 (Mon, 11 Jan 2010) | 3
lines

Enhance SVals::getAsRegion: get the region that is converted to an integer.
This with previous patch fixes a OSAtomic test case.




On 1/12/10 9:41 AM, "Andy Wick" <Andy.Wick at corp.aol.com> wrote:


> Updated to TIP this morning, last update was I think 2 days ago.
> 
> void test (void *uw1) {
>     unsigned int foo;
>     foo = ((long)(uw1));
> }
> 
> clang --analyze test.c
> 
> clang: SValuator.cpp:119: clang::SValuator::CastResult
> clang::SValuator::EvalCast(clang::SVal, const clang::GRState*,
> clang::QualType, clang::QualType): Assertion `Loc::IsLocType(castTy)' failed.
> 0  clang           0x000000000142a77f
> 1  clang           0x000000000142af81
> 2  libpthread.so.0 0x0000002a9567f160
> 3  libc.so.6       0x0000002a95d5f745 gsignal + 69
> 4  libc.so.6       0x0000002a95d60eb3 abort + 467
> 5  libc.so.6       0x0000002a95d58dc9
> 6  clang           0x00000000006c057e
> 7  clang           0x000000000067efcf
> 8  clang           0x0000000000679ac4
> 9  clang           0x0000000000679fe8
> 10 clang           0x0000000000679a54
> 11 clang           0x0000000000680bfd
> 12 clang           0x000000000066e708
> 13 clang           0x000000000066e972
> 14 clang           0x00000000004d9b2f
> 15 clang           0x00000000004d84d0
> 16 clang           0x00000000004d89b5
> 17 clang           0x00000000006e39f6
> 18 clang           0x00000000004347c8
> 19 clang           0x0000000000437851 main + 1585
> 20 libc.so.6       0x0000002a95d4d1d7 __libc_start_main + 215
> 21 clang           0x000000000043263a
> Stack dump:
> 0.    Program arguments: /usr/local/bin/clang -cc1 -triple
> x86_64-unknown-linux-gnu -analyze -disable-free -main-file-name test.c
> -analyzer-store=region -analyzer-opt-analyze-nested-blocks -warn-dead-stores
> -warn-security-syntactic -checker-cfref -analyzer-eagerly-assume
> -warn-objc-methodsigs -warn-objc-unused-ivars -analyzer-output plist
> -mrelocation-model static -mdisable-fp-elim -munwind-tables -target-cpu x86-64
> -v -resource-dir /usr/local/lib/clang/1.1 -fmessage-length 166 -fgnu-runtime
> -fdiagnostics-show-option -fcolor-diagnostics -o test.plist -x c test.c
> 1.    <eof> parser at end of file
> 2.    test.c:3:5: Error evaluating statement
> 3.    test.c:3:5: Error evaluating statement
> 4.    test.c:3:11: Error evaluating statement