Hide Forgot
There's a check in the kernel build for presence of -fstack-protector (that arg is unrelated). The C code that it passes seems to introduce a segv whether -fstack-protect is passed or not.. libgcc-4.8.2-1.fc20.x86_64 gcc-c++-4.8.2-1.fc20.x86_64 gcc-4.8.2-1.fc20.x86_64 $ cat test.c int foo(void) { char X[200]; return 3; } $ gcc test.c gcc: internal compiler error: Segmentation fault (program cc1) Please submit a full bug report, with preprocessed source if appropriate. See <http://bugzilla.redhat.com/bugzilla> for instructions.
just realised it segv's with *any* C file. $ gdb /usr/libexec/gcc/x86_64-redhat-linux/4.8.2/cc1 core.24252 Reading symbols from /usr/libexec/gcc/x86_64-redhat-linux/4.8.2/cc1...Reading symbols from /usr/lib/debug/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/cc1.debug...done. done. [New LWP 24252] Core was generated by `/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/cc1 -quiet test.c -quiet -dumpbase t'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00000000003f4c10 in ?? () (gdb) bt #0 0x00000000003f4c10 in ?? () #1 0x0000000000df937d in __libc_csu_init () #2 0x00007f8449146cf5 in __libc_start_main (main=0x77fbe0 <main(int, char**)>, argc=12, argv=0x7fffcce7f558, init=0xdf9330 <__libc_csu_init>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffcce7f548) at libc-start.c:244 #3 0x0000000000ce845d in _start () Bizarre. The root disk on this machine is failing, so maybe some shared library got corrupted, but somehow only gcc is affected. it's getting reinstalled on a new disk tomorrow, so I'll just assume this is bad hardware related.