https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47785
--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- Another instance on x86_64-apple-darwin14 with Xcode 7 [Book15] f90/bug% gcc6 /opt/gcc/_clean/gcc/testsuite/gcc.dg/debug/pr41893-1.c -gstabs1 -Wa,-Q -flto -fwhole-program -O /opt/gcc/_clean/gcc/testsuite/gcc.dg/debug/pr41893-2.c /var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccJ7keUF.s:1:9: error: unsupported directive '.stabs' .stabs "/var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccnRWDSD.ltrans0.o",100,0,0,Ltext0 ^ /var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccJ7keUF.s:4:9: error: unsupported directive '.stabs' .stabs "gcc2_compiled.",60,0,0,0 ^ /var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccJ7keUF.s:8:9: error: unsupported directive '.stabs' .stabs "/opt/gcc/_clean/gcc/testsuite/gcc.dg/debug/pr41893-1.c",132,0,0,Ltext1 ^ /var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccJ7keUF.s:10:2: error: unknown directive .stabd 68,0,16 ^ /var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccJ7keUF.s:13:2: error: unknown directive .stabd 68,0,16 ^ /var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccJ7keUF.s:17:9: error: unsupported directive '.stabs' .stabs "main:F(0,1)=r(0,1);-2147483648;2147483647;",36,0,0,_main ^ /var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccJ7keUF.s:22:2: error: unknown directive .stabd 68,0,12 ^ /var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccJ7keUF.s:27:9: error: unsupported directive '.stabs' .stabs "func1:F(0,2)=(0,2)",36,0,0,_func1 ^ /var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccJ7keUF.s:72:9: error: unsupported directive '.stabs' .stabs "",100,0,0,Letext0 ^ lto-wrapper: fatal error: gcc6 returned 1 exit status compilation terminated. collect2: fatal error: lto-wrapper returned 1 exit status compilation terminated.