http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59951
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Keywords| |wrong-code
Last reconfirmed| |2014-01-29
Component|bootstrap |tree-optimization
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
Ever confirmed|0 |1
Summary|bootstrap comparison |[4.9 Regression] bootstrap
|failure with -O3 for a week |comparison failure with -O3
| |for a week
Target Milestone|--- |4.9.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I can reproduce it with
> CFLAGS="-O3" CXXFLAGS="-O3" /space/rguenther/src/svn/trunk/configure
> --enable-languages=c,c++ --enable-checking=release --disable-werror
> make -j6 CFLAGS="-O3" CXXFLAGS="-O3" BOOT_CFLAGS="-O3"
...
Comparing stages 2 and 3
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1-checksum.o differs
Bootstrap comparison failure!
gcc/bitmap.o differs
gcc/emit-rtl.o differs
libiberty/pic/md5.o differs
libiberty/md5.o differs
make[2]: *** [compare] Error 1
on current trunk (r207234). Note that only setting BOOT_CFLAGS isn't enough
to trigger it. I will investigate tomorrow (let's hope adding -g and
--without-build-config --disable-multilib will still reproduce it).
