http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55644
--- Comment #5 from Matt Hargett <matt at use dot net> 2013-02-06 01:23:02 UTC --- the latest failure, with current trunk: /work/mhargett/gcc-trunk-obj/./prev-gcc/xg++ -B/work/mhargett/gcc-trunk-obj/./prev-gcc/ -B/u/mhargett/x86_64-unknown-linux-gnu/bin/ -nostdinc++ -B/work/mhargett/gcc-trunk-obj/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -B/work/mhargett/gcc-trunk-obj/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -I/work/mhargett/gcc-trunk-obj/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu -I/work/mhargett/gcc-trunk-obj/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include -I/work/mhargett/gcc-trunk/libstdc++-v3/libsupc++ -L/work/mhargett/gcc-trunk-obj/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -L/work/mhargett/gcc-trunk-obj/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -g -O2 -O3 -march=nocona -mtune=core2 -floop-block -floop-interchange -floop-strip-mine -flto=jobserver -frandom-seed=1 -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 -static-libstdc++ -static-libgcc gcc-ar.o -o gcc-ar \ file-find.o libcommon.a ../libcpp/libcpp.a ../libbacktrace/.libs/libbacktrace.a ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a In file included from ../../gcc-trunk/libbacktrace/mmapio.c:116:0, from :61: ../../gcc-trunk/libbacktrace/elf.c: In function 'elf_add': ../../gcc-trunk/libbacktrace/mmapio.c:98:14: error: 'ehdr_view.len' may be used uninitialized in this function [-Werror=maybe-uninitialized] if (munmap (const_cast.v, view->len) < 0) ^ In file included from ../../gcc-trunk/libbacktrace/mmapio.c:119:0, from :61: ../../gcc-trunk/libbacktrace/elf.c:476:25: note: 'ehdr_view.len' was declared here struct backtrace_view ehdr_view; ^ In file included from ../../gcc-trunk/libbacktrace/mmapio.c:116:0, from :61: ../../gcc-trunk/libbacktrace/mmapio.c:98:14: error: 'ehdr_view.base' may be used uninitialized in this function [-Werror=maybe-uninitialized] if (munmap (const_cast.v, view->len) < 0) ^ In file included from ../../gcc-trunk/libbacktrace/mmapio.c:119:0, from :61: ../../gcc-trunk/libbacktrace/elf.c:476:25: note: 'ehdr_view.base' was declared here struct backtrace_view ehdr_view; ^ In file included from ../../gcc-trunk/libbacktrace/mmapio.c:119:0, from :61: ../../gcc-trunk/libbacktrace/elf.c:516:10: error: 'ehdr_view.data' may be used uninitialized in this function [-Werror=maybe-uninitialized] memcpy (&ehdr, ehdr_view.data, sizeof ehdr); ^ In file included from ../../gcc-trunk/libbacktrace/mmapio.c:119:0, from :61: ../../gcc-trunk/libbacktrace/elf.c:476:25: note: 'ehdr_view.data' was declared here struct backtrace_view ehdr_view; ^ lto1: all warnings being treated as errors make[4]: *** [/tmp/cc68SyuG.ltrans2.ltrans.o] Error 1 make[4]: *** Waiting for unfinished jobs.... lto-wrapper: make returned 2 exit status /u/mhargett/x86_64-unknown-linux-gnu/bin/ld: lto-wrapper failed collect2: error: ld returned 1 exit status make[3]: *** [gcov-dump] Error 1 make[3]: *** Waiting for unfinished jobs.... In file included from ../../gcc-trunk/libiberty/cp-demangle.c:877:0, from :73: ../../gcc-trunk/libbacktrace/elf.c: In function 'backtrace_initialize': ../../gcc-trunk/libbacktrace/mmapio.c:98:14: error: 'ehdr_view.len' may be used uninitialized in this function [-Werror=maybe-uninitialized] if (munmap (const_cast.v, view->len) < 0) ^ In file included from ../../gcc-trunk/libiberty/cp-demangle.c:879:0, from :73: ../../gcc-trunk/libbacktrace/elf.c:476:25: note: 'ehdr_view.len' was declared here struct backtrace_view ehdr_view; ^ In file included from ../../gcc-trunk/libiberty/cp-demangle.c:877:0, from :73: ../../gcc-trunk/libbacktrace/mmapio.c:98:14: error: 'ehdr_view.base' may be used uninitialized in this function [-Werror=maybe-uninitialized] if (munmap (const_cast.v, view->len) < 0) ^ In file included from ../../gcc-trunk/libiberty/cp-demangle.c:879:0, from :73: ../../gcc-trunk/libbacktrace/elf.c:476:25: note: 'ehdr_view.base' was declared here struct backtrace_view ehdr_view; ^ In file included from ../../gcc-trunk/libiberty/cp-demangle.c:879:0, from :73: ../../gcc-trunk/libbacktrace/elf.c:516:10: error: 'ehdr_view.data' may be used uninitialized in this function [-Werror=maybe-uninitialized] memcpy (&ehdr, ehdr_view.data, sizeof ehdr); ^ lto1: all warnings being treated as errors make[4]: *** [/tmp/ccqV4nuG.ltrans13.ltrans.o] Error 1 lto-wrapper: make returned 2 exit status /u/mhargett/x86_64-unknown-linux-gnu/bin/ld: lto-wrapper failed collect2: error: ld returned 1 exit status make[3]: *** [gcov] Error 1 In file included from ../../gcc-trunk/libbacktrace/dwarf.c:398:0, from :154: ../../gcc-trunk/libbacktrace/elf.c: In function 'elf_add': ../../gcc-trunk/libbacktrace/mmapio.c:98:14: error: 'ehdr_view.len' may be used uninitialized in this function [-Werror=maybe-uninitialized] if (munmap (const_cast.v, view->len) < 0) ^ In file included from ../../gcc-trunk/libbacktrace/dwarf.c:401:0, from :154: ../../gcc-trunk/libbacktrace/elf.c:476:25: note: 'ehdr_view.len' was declared here struct backtrace_view ehdr_view; ^ In file included from ../../gcc-trunk/libbacktrace/dwarf.c:398:0, from :154: ../../gcc-trunk/libbacktrace/mmapio.c:98:14: error: 'ehdr_view.base' may be used uninitialized in this function [-Werror=maybe-uninitialized] if (munmap (const_cast.v, view->len) < 0) ^ In file included from ../../gcc-trunk/libbacktrace/dwarf.c:401:0, from :154: ../../gcc-trunk/libbacktrace/elf.c:476:25: note: 'ehdr_view.base' was declared here struct backtrace_view ehdr_view; ^ In file included from ../../gcc-trunk/libbacktrace/dwarf.c:401:0, from :154: ../../gcc-trunk/libbacktrace/elf.c:516:10: error: 'ehdr_view.data' may be used uninitialized in this function [-Werror=maybe-uninitialized] memcpy (&ehdr, ehdr_view.data, sizeof ehdr); ^ In file included from ../../gcc-trunk/libbacktrace/dwarf.c:401:0, from :154: ../../gcc-trunk/libbacktrace/elf.c:476:25: note: 'ehdr_view.data' was declared here struct backtrace_view ehdr_view; ^ lto1: all warnings being treated as errors make[4]: *** [/tmp/ccybddqW.ltrans4.ltrans.o] Error 1 make[4]: *** Waiting for unfinished jobs.... lto-wrapper: make returned 2 exit status /u/mhargett/x86_64-unknown-linux-gnu/bin/ld: lto-wrapper failed collect2: error: ld returned 1 exit status make[3]: *** [collect2] Error 1 In file included from ../../gcc-trunk/libiberty/cp-demangle.c:877:0, from :59: ../../gcc-trunk/libbacktrace/elf.c: In function 'backtrace_initialize': ../../gcc-trunk/libbacktrace/mmapio.c:98:14: error: 'ehdr_view.len' may be used uninitialized in this function [-Werror=maybe-uninitialized] if (munmap (const_cast.v, view->len) < 0) ^ In file included from ../../gcc-trunk/libiberty/cp-demangle.c:879:0, from :59: ../../gcc-trunk/libbacktrace/elf.c:476:25: note: 'ehdr_view.len' was declared here struct backtrace_view ehdr_view; ^ In file included from ../../gcc-trunk/libiberty/cp-demangle.c:877:0, from :59: ../../gcc-trunk/libbacktrace/mmapio.c:98:14: error: 'ehdr_view.base' may be used uninitialized in this function [-Werror=maybe-uninitialized] if (munmap (const_cast.v, view->len) < 0) ^ In file included from ../../gcc-trunk/libiberty/cp-demangle.c:879:0, from :59: ../../gcc-trunk/libbacktrace/elf.c:476:25: note: 'ehdr_view.base' was declared here struct backtrace_view ehdr_view; ^ In file included from ../../gcc-trunk/libiberty/cp-demangle.c:879:0, from :59: ../../gcc-trunk/libbacktrace/elf.c:516:10: error: 'ehdr_view.data' may be used uninitialized in this function [-Werror=maybe-uninitialized] memcpy (&ehdr, ehdr_view.data, sizeof ehdr); ^ lto1: all warnings being treated as errors make[4]: *** [/tmp/ccG7WpE4.ltrans21.ltrans.o] Error 1 make[4]: *** Waiting for unfinished jobs.... In file included from ../../gcc-trunk/libiberty/simple-object.c:426:0, from :35: ../../gcc-trunk/libiberty/simple-object-mach-o.c: In function 'simple_object_mach_o_find_sections': ../../gcc-trunk/libiberty/simple-object-mach-o.c:653:37: error: 'wrapper_sect_offset' may be used uninitialized in this function [-Werror=maybe-uninitialized] secoffset = wrapper_sect_offset + subsect_offset; ^ lto1: all warnings being treated as errors make[4]: *** [/tmp/ccG7WpE4.ltrans22.ltrans.o] Error 1 lto-wrapper: make returned 2 exit status /u/mhargett/x86_64-unknown-linux-gnu/bin/ld: lto-wrapper failed collect2: error: ld returned 1 exit status make[3]: *** [lto-wrapper] Error 1 rm cpp.pod gfdl.pod gcov.pod fsf-funding.pod gcc.pod make[3]: Leaving directory `/work/mhargett/gcc-trunk-obj/gcc' make[2]: *** [all-stage2-gcc] Error 2