http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45996
--- Comment #2 from Udo Steinberg <us15 at os dot inf.tu-dresden.de> 2010-10-13 12:06:32 UTC --- Created attachment 22029 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22029 Testcase gcc -Os -falign-functions=32 foo.cc -o foo nm foo | c++filt | grep func_ 00000000004004f6 T func_bar() 0000000000400500 T func_baz() 00000000004004ec T func_foo() gcc -falign-functions=32 foo.cc -o foo nm foo | c++filt | grep func_ 0000000000400520 T func_bar() 0000000000400540 T func_baz() 0000000000400500 T func_foo() So it seems to be related to the -Os option. My gcc is configured as follows: gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-slackware-linux/4.6.0/lto-wrapper Target: x86_64-slackware-linux Configured with: ../gcc-svn/configure --prefix=/usr --libdir=/usr/lib64 --enable-shared --enable-bootstrap --enable-languages=c,c++ --enable-threads=posix --enable-checking=release --with-system-zlib --disable-libunwind-exceptions --enable-__cxa_atexit --enable-libssp --with-gnu-ld --verbose --disable-multilib --target=x86_64-slackware-linux --build=x86_64-slackware-linux --host=x86_64-slackware-linux Thread model: posix gcc version 4.6.0 20101005 (experimental) (GCC)
