https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63534
--- Comment #21 from Igor Zamyatin <izamyatin at gmail dot com> --- (In reply to Iain Sandoe from comment #20) > > libtool: compile: /GCC/ml/gcc-trunk-appleas/./gcc/xgcc > -B/GCC/ml/gcc-trunk-appleas/./gcc/ > -B/compilers/gcc-trunk/x86_64-apple-darwin12/bin/ > -B/compilers/gcc-trunk/x86_64-apple-darwin12/lib/ -isystem > /compilers/gcc-trunk/x86_64-apple-darwin12/include -isystem > /compilers/gcc-trunk/x86_64-apple-darwin12/sys-include -DHAVE_CONFIG_H -I. > -I/GCC/gcc-trunk/libquadmath -I /GCC/gcc-trunk/libquadmath/../include -g -O2 > -m32 -MT math/frexpq.lo -MD -MP -MF math/.deps/frexpq.Tpo -c > /GCC/gcc-trunk/libquadmath/math/frexpq.c -fno-common -DPIC -o > math/.libs/frexpq.o > /var/folders/tj/17r7407j14d324dzf67cnvxm000114/T//ccahZ8x6.s:68:non- > relocatable subtraction expression, "LC0" minus "L1$pb" > /var/folders/tj/17r7407j14d324dzf67cnvxm000114/T//ccahZ8x6.s:68:symbol: > "L1$pb" can't be undefined in a subtraction expression > /var/folders/tj/17r7407j14d324dzf67cnvxm000114/T//ccahZ8x6.s:unknown: > Undefined local symbol L1$pb > make[6]: *** [math/frexpq.lo] Error 1 > make[5]: *** [all] Error 2 > > ==== Can we look at the rtl dumps and probably asm file?