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[Bug c++/60750] [4.8/4.9 Regression] double free after std::move on string inside throw when compiled with optimization
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 04 Apr 2014 09:43:15 +0000
- Subject: [Bug c++/60750] [4.8/4.9 Regression] double free after std::move on string inside throw when compiled with optimization
- Auto-submitted: auto-generated
- References: <bug-60750-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60750
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Priority|P3 |P2
Target Milestone|--- |4.8.3
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
valgrind says
==12050== Invalid free() / delete / delete[] / realloc()
==12050== at 0x4C28FAC: operator delete(void*) (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==12050== by 0x400DA3: main (basic_string.h:547)
==12050== Address 0x5a0b0b0 is 0 bytes inside a block of size 30 free'd
==12050== at 0x4C28FAC: operator delete(void*) (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==12050== by 0x4EF6879: std::string::_M_mutate(unsigned long, unsigned long,
unsigned long) (in /usr/lib64/libstdc++.so.6.0.20)
==12050== by 0x4EF6D1D: std::string::_M_replace_safe(unsigned long, unsigned
long, char const*, unsigned long) (in /usr/lib64/libstdc++.so.6.0.20)
==12050== by 0x400CF3: thrower(std::string) (basic_string.h:1277)
==12050== by 0x400D8F: main (t.C:13)