https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104012
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |msebor at gcc dot gnu.org
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
I'm not able to reproduce a warning for the test case in attachment 52182 with
the top of GCC trunk configured for x86_64 at -O2 or -O3 and with -m32. There
are three calls to snprintf() in CreateMakeVariable() and for each call GCC
determines the output of the %04d directive is exactly four bytes (see the dump
produced by -ftree-dump-strlen):
/home/buildbot/repos/CMake/Source/cmLocalUnixMakefileGenerator3.cxx:1307:
snprintf: objsize = 5, fmtstr = "%04d"
Directive 1 at offset 0: "%04d"
Result: 4, 4, 4, 4 (4, 4, 4, 4)
Directive 2 at offset 4: "", length = 1
Substituting 4 for return value.
/home/buildbot/repos/CMake/Source/cmLocalUnixMakefileGenerator3.cxx:1311:
snprintf: objsize = 5, fmtstr = "%04d"
Directive 1 at offset 0: "%04d"
Result: 4, 4, 4, 4 (4, 4, 4, 4)
Directive 2 at offset 4: "", length = 1
Substituting 4 for return value.
/home/buildbot/repos/CMake/Source/cmLocalUnixMakefileGenerator3.cxx:1282:
snprintf: objsize = 5, fmtstr = "%04d"
Directive 1 at offset 0: "%04d"
Result: 4, 4, 4, 4 (4, 4, 4, 4)
Directive 2 at offset 4: "", length = 1
Substituting 4 for return value.
If you see the warning with the latest GCC 12 please provide the full command
line (see https://gcc.gnu.org/bugs/#need for a detailed list of what we ask
users to provide in order to reproduce issues).
