asan false positive with -static-libstdc++ and exceptions

[GoogleCodeExporter]

% clang++ -O -fsanitize=address small_throw_test.cc -static-libstdc++  ; 
./a.out

==5551== ERROR: AddressSanitizer: stack-buffer-underflow ... 

The problem is that when we are linking libstdc++ statically, 
the interceptor for __cxa_throw does not kick in.
In most cases it is not a problem because we also instrument all calls to 
__cxa_throw at compile time, but if such a call was not instrumented
(as in this test), we get a false report. 

One solution would be to reimplement __cxa_throw in asan instead of 
wrapping the standard implementation, but that sounds too messy.

I am not going to act on this bug, unless we find a clean solution. 

Original issue reported on code.google.com by konstant...@gmail.com on 29 Jan 2013 at 9:08

Attachments:

• small_throw_test.cc

[GoogleCodeExporter]

Original comment by ramosian.glider@gmail.com on 30 Jul 2015 at 9:05

• Added labels: ProjectAddressSanitizer

[GoogleCodeExporter]

Adding Project:AddressSanitizer as part of GitHub migration.

Original comment by ramosian.glider@gmail.com on 30 Jul 2015 at 9:06