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[Bug rtl-optimization/41862] valgrind warns about using uninitialized variable with -fgcse-sm
- From: "zsojka at seznam dot cz" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 Nov 2009 10:45:22 -0000
- Subject: [Bug rtl-optimization/41862] valgrind warns about using uninitialized variable with -fgcse-sm
- References: <bug-41862-14164@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from zsojka at seznam dot cz 2009-11-25 10:45 -------
Also it causes bootstrap comparison failures for me at x86_64-pc-linux-gnu,
r154643
export CFLAGS="-O2 -fgcse-sm"
export CXXFLAGS="-O2 -fgcse-sm"
../configure --enable-languages=c,c++
--prefix=/mnt/svn/gcc-trunk/binary-154643-O2-gcse-sm
make
...
Comparing stages 2 and 3
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1-checksum.o differs
Bootstrap comparison failure!
x86_64-unknown-linux-gnu/32/libgcc/multf3_s.o differs
x86_64-unknown-linux-gnu/32/libgcc/bid128_div.o differs
x86_64-unknown-linux-gnu/32/libgcc/addtf3_s.o differs
x86_64-unknown-linux-gnu/32/libgcc/fixtfsi.o differs
make[2]: *** [compare] Error 1
Should this be marked as regression?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41862