on an x86_64/x86 system, a simple mandel code base crashes gcc-4.1.2 and newer:
$ gcc -c mandel.i -O1 mandel.i: In function 'mandel': mandel.i:5: warning: incompatible implicit declaration of built-in function 'cabs' mandel.i:2: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://bugs.gentoo.org/> for instructions. Preprocessed source stored into /tmp/cc4gdEy7.out file, please attach this to your bugreport. gcc-4.0.4 seems to work, but anything newer bombs -- Summary: [4.1/4.2 regression] gcc ICEs/segfaults when using implicit cabs() with -O1 Product: gcc Version: 4.2.4 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: vapier at gentoo dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35227
