./cc1 /home/apinski/src/gcc-fsf/local/gcc/gcc/testsuite/gcc.target/mips/int-moves-2.c -quiet -DNOMIPS16= "-DMIPS16=__attribute__((mips16))" -mgp64 -mabi=o64 /home/apinski/src/gcc-fsf/local/gcc/gcc/testsuite/gcc.target/mips/int-moves-2.c:27:1: internal compiler error: Bus error { ^ 0x105164f7 crash_signal /home/apinski/src/gcc-fsf/local/gcc/gcc/toplev.c:333 0x103f9191 init_op_alt_data /home/apinski/src/gcc-fsf/local/gcc/gcc/lra.c:575 0x103f9191 lra_init() /home/apinski/src/gcc-fsf/local/gcc/gcc/lra.c:2389 0x1051639b lang_dependent_init_target /home/apinski/src/gcc-fsf/local/gcc/gcc/toplev.c:1673 0x108aa893 save_target_globals() /home/apinski/src/gcc-fsf/local/gcc/gcc/target-globals.c:89 0x10776987 mips_set_mips16_mode /home/apinski/src/gcc-fsf/local/gcc/gcc/config/mips/mips.c:16350 0x100bec4b store_parm_decls() /home/apinski/src/gcc-fsf/local/gcc/gcc/c/c-decl.c:8306 0x10109557 c_parser_declaration_or_fndef /home/apinski/src/gcc-fsf/local/gcc/gcc/c/c-parser.c:1755 0x1010e1c3 c_parser_translation_unit /home/apinski/src/gcc-fsf/local/gcc/gcc/c/c-parser.c:1251 0x1010e1c3 c_parse_file() /home/apinski/src/gcc-fsf/local/gcc/gcc/c/c-parser.c:10889 0x1015356f c_common_parse_file() /home/apinski/src/gcc-fsf/local/gcc/gcc/c-family/c-opts.c:1062 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions.
This is because save_target_globals does not allocate a target_lra_int (though it might be zero out the array before doing anything else too).
It is not just int-moves-2.c but all of the tests of the mips16 attribute.
I am seeing this failure as well when building newlib with the -mips16 option. Here is a cut down test case (1 line) that gives me the same segfault as Andrew is seeing. argz_add(char **argz , long unsigned int *argz_len , const char *str)
I have checked in a patch for this problem as an obvious fix. http://gcc.gnu.org/ml/gcc-patches/2012-11/msg00153.html I forgot to put the bug number in ChangeLog, that is why bugzilla did not get updated automatically.