https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68881
vries at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-12-13 Ever confirmed|0 |1 --- Comment #1 from vries at gcc dot gnu.org --- I see the failure as well in a build, so confirmed. The -O2 -flto -flto-partition=none failure looks like: ... /tmp/cc0Zk0UZ.s: Assembler messages: /tmp/cc0Zk0UZ.s:121: Error: symbol definition loop encountered at `callmealias.lto_priv.0' /tmp/cc0Zk0UZ.s:121: Error: symbol definition loop encountered at `callmealias.lto_priv.1' lto-wrapper: fatal error: build/gcc/xgcc returned 1 exit status^M compilation terminated. collect2: fatal error: lto-wrapper returned 1 exit status^M compilation terminated. compiler exited with status 1 ...