http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47601
--- Comment #18 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-05-28 14:27:18 UTC --- With the patch in comment #17, the "mio_component_ref(): Component not found" are gone, but compiling gyre_lanr.f90 in the original code gives a segmentation fault: [macbook] bug/pr47601% gfc -c gyre_lanr.f90 f951: internal compiler error: Segmentation fault The backtrace is Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_INVALID_ADDRESS at address: 0x00000000000000a8 gfc_use_derived (sym=0x0) at ../../work/gcc/fortran/symbol.c:1942 1942 if (sym->components != NULL || sym->attr.zero_comp) (gdb) bt #0 gfc_use_derived (sym=0x0) at ../../work/gcc/fortran/symbol.c:1942 #1 0x000000010009f007 in gfc_find_component (sym=<value temporarily unavailable, due to optimizations>, name=0x7fff5fbfd220 "n_e", noaccess=0 '\0', silent=0 '\0') at ../../work/gcc/fortran/symbol.c:2002 #2 0x0000000000000001 in ?? ()