https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85259
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |9.0
Resolution|--- |FIXED
Summary|[8/9 Regression] Missing |[8 Regression] Missing
|-Wstringop-overflow= since |-Wstringop-overflow= since
|r256683 |r256683
--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
This is fixed in 9.0 which prints:
In file included from /usr/include/string.h:635,
from pr85259.c:1:
In function ‘strcpy’,
inlined from ‘main’ at pr85259.c:5:2:
/usr/include/bits/string3.h:110:10: warning: ‘__builtin___memcpy_chk’ forming
offset 7 is out of the bounds [0, 6] of object ‘buf’ with type ‘char[6]’
[-Warray-bounds]
110 | return __builtin___strcpy_chk (__dest, __src, __bos (__dest));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pr85259.c: In function ‘main’:
pr85259.c:3:6: note: ‘buf’ declared here
3 | char buf[6];
| ^~~
In file included from /usr/include/string.h:635,
from pr85259.c:1:
In function ‘strcat’,
inlined from ‘main’ at pr85259.c:6:2:
/usr/include/bits/string3.h:148:10: warning: ‘__builtin___memcpy_chk’ writing 7
bytes into a region of size 0 overflows the destination [-Wstringop-overflow=]
148 | return __builtin___strcat_chk (__dest, __src, __bos (__dest));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Per comment #4, fixes for missing warnings are not backported, even if they are
regressions, so I'll resolve this as fixed.
