http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55496
Bug #: 55496 Summary: False positive -Werror=uninitialized Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassig...@gcc.gnu.org ReportedBy: hjl.to...@gmail.com On Linux/x86-64, revision 193864 configured with --prefix=/usr/4.8.0 --enable-clocale=gnu --with-system-zlib --enable-shared --with-demangler-in-ld --with-build-config=bootstrap-lto --with-fpmath=sse --enable-languages=c,c++,fortran,java,lto,objc and built with make bld profiledbootstrap -j 8 on a 8-core machine gave /export/gnu/import/git/gcc-test-profile/bld/./prev-gcc/g++ -B/export/gnu/import/git/gcc-test-profile/bld/./prev-gcc/ -B/usr/4.8.0/x86_64-unknown-linux-gnu/bin/ -nostdinc++ -B/export/gnu/import/git/gcc-test-profile/bld/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -B/export/gnu/import/git/gcc-test-profile/bld/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -I/export/gnu/import/git/gcc-test-profile/bld/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu -I/export/gnu/import/git/gcc-test-profile/bld/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include -I/export/gnu/import/git/gcc-test-profile/src-trunk/libstdc++-v3/libsupc++ -L/export/gnu/import/git/gcc-test-profile/bld/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -L/export/gnu/import/git/gcc-test-profile/bld/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -c -g -O2 -flto=jobserver -frandom-seed=1 -fprofile-use -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I. -I../../src-trunk/gcc -I../../src-trunk/gcc/. -I../../src-trunk/gcc/../include -I../../src-trunk/gcc/../libcpp/include -I../../src-trunk/gcc/../libdecnumber -I../../src-trunk/gcc/../libdecnumber/bid -I../libdecnumber -I../../src-trunk/gcc/../libbacktrace ../../src-trunk/gcc/cfg.c -o cfg.o ../../src-trunk/gcc/cfg.c: In function 'scale_bbs_frequencies_gcov_type(basic_block_def**, int, long, long)': ../../src-trunk/gcc/cfg.c:945:8: error: 'e' may be used uninitialized in this function [-Werror=uninitialized] edge e; cc1plus: all warnings being treated as errors make[6]: *** [cfg.o] Error 1 make[6]: *** Waiting for unfinished jobs.... rm gcj-dbtool.pod jcf-dump.pod jv-convert.pod grmic.pod gcov.pod gcj.pod gc-analyze.pod gfdl.pod cpp.pod gij.pod gfortran.pod gcc.pod fsf-funding.pod make[6]: Leaving directory `/export/gnu/import/git/gcc-test-profile/bld/gcc' make[5]: *** [all-stagefeedback-gcc] Error 2 make[5]: Leaving directory `/export/gnu/import/git/gcc-test-profile/bld' make[4]: *** [stagefeedback-bubble] Error 2 make[4]: Leaving directory `/export/gnu/import/git/gcc-test-profile/bld' make[3]: *** [profiledbootstrap] Error 2 make[3]: Leaving directory `/export/gnu/import/git/gcc-test-profile/bld' 11063.14user 498.20system 41:50.07elapsed 460%CPU (0avgtext+0avgdata 521396maxresident)k 55104inputs+14523280outputs (2major+111666564minor)pagefaults 0swaps make[2]: *** [profiledbootstrap] Error 2