https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106974
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Summary|g++ bug caused by r260621 |g++ bug caused by
| |r9-595-g955da5e5443724cb
Last reconfirmed| |2022-09-20
Ever confirmed|0 |1
CC| |jason at gcc dot gnu.org
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
$ g++ pr106974.C -fsanitize=undefined && ./a.out
pr106974.C: In instantiation of ‘const NumType&
TestVector<NumType>::operator[](int) const [with NumType = unsigned int]’:
pr106974.C:24:24: required from here
pr106974.C:16:34: warning: returning reference to temporary
[-Wreturn-local-addr]
16 | return shard_index_[0].data[0];
| ~~~~~~~~~~~~~~~~~~~~^
pr106974.C:16:36: runtime error: reference binding to null pointer of type
'const unsigned int'
pr106974.C:24:11: runtime error: load of null pointer of type 'const unsigned
int'
Segmentation fault (core dumped)
while clang is fine:
$ clang++ pr106974.C -fsanitize=undefined && ./a.out
0
Really started with r9-595-g955da5e5443724cb.
