[compiler-rt] r198017 - [ASan] Make sure none of the __asan_gen_ global strings end up in the symbol table, add a test.

[David Blaikie]

This test is failing for me on Linux (Ubuntu TLS 12.04 I believe) as
follows:

/home/blaikie/dev/llvm/build/clang/debug/split/notypes/nostandalone/./bin/clang
-fsanitize=address -mno-omit-leaf-frame-pointer
-fno-omit-frame-pointer -fno-optimize-sibling-calls -gline-tables-only
-m32 /mnt/fast/dev/llvm/src/projects/compiler-rt/test/asan/TestCases/no_asan_gen_globals.c
-o /mnt/fast/dev/llvm/build/clang/debug/split/notypes/nostandalone/projects/compiler-rt/test/asan/32bitConfig/TestCases/Output/no_asan_gen_globals.c.tmp.exe
nm /mnt/fast/dev/llvm/build/clang/debug/split/notypes/nostandalone/projects/compiler-rt/test/asan/32bitConfig/TestCases/Output/no_asan_gen_globals.c.tmp.exe
| FileCheck /mnt/fast/dev/llvm/src/projects/compiler-rt/test/asan/TestCases/no_asan_gen_globals.c
--
Exit Code: 1

Command Output (stderr):
--
<stdin>:2011:14: error: CHECK-NOT: string occurred!
080fb9de r .L__asan_gen_
             ^
/mnt/fast/dev/llvm/src/projects/compiler-rt/test/asan/TestCases/no_asan_gen_globals.c:11:15:
note: CHECK-NOT: pattern specified here
// CHECK-NOT: __asan_gen_
              ^


Anything ideas with what the issue is here? Something I should fix?
Legitimate bug?


On Wed, Dec 25, 2013 at 6:22 AM, Alexander Potapenko <glider at google.com>
wrote:

> Author: glider
> Date: Wed Dec 25 08:22:15 2013
> New Revision: 198017
>
> URL: http://llvm.org/viewvc/llvm-project?rev=198017&view=rev
> Log:
> [ASan] Make sure none of the __asan_gen_ global strings end up in the
> symbol table, add a test.
>
> This should fix http://llvm.org/bugs/show_bug.cgi?id=17976
> Another test checking for the global variables' locations and prefixes on
> Darwin will be committed separately.
>
>
> Added:
>     compiler-rt/trunk/lib/asan/lit_tests/TestCases/no_asan_gen_globals.c
>  (with props)
>
> Added: compiler-rt/trunk/lib/asan/lit_tests/TestCases/no_asan_gen_globals.c
> URL:
> http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/asan/lit_tests/TestCases/no_asan_gen_globals.c?rev=198017&view=auto
>
> ==============================================================================
> --- compiler-rt/trunk/lib/asan/lit_tests/TestCases/no_asan_gen_globals.c
> (added)
> +++ compiler-rt/trunk/lib/asan/lit_tests/TestCases/no_asan_gen_globals.c
> Wed Dec 25 08:22:15 2013
> @@ -0,0 +1,7 @@
> +// Make sure __asan_gen_* strings do not end up in the symbol table.
> +
> +// RUN: %clang_asan %s -o %t.exe
> +// RUN: nm %t.exe | grep __asan_gen_ || exit 0
> +
> +int x, y, z;
> +int main() { return 0; }
>
> Propchange:
> compiler-rt/trunk/lib/asan/lit_tests/TestCases/no_asan_gen_globals.c
>
> ------------------------------------------------------------------------------
>     svn:eol-style = LF
>
>
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