[Bug middle-end/51994] [4.6/4.7 Regression] git-1.7.8.3 miscompiled due to negative bitpos from get_inner_reference

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51994

--- Comment #23 from Uros Bizjak <ubizjak at gmail dot com> 2012-01-26 18:51:00 UTC ---
With a crosscompiler to alpha-linux-gnu, we can trigger both problems, one with
preprocessed source, another with the testcase in latest attached patch:

[uros@localhost testalpha]$ ~/gcc-build-alpha-46/gcc/cc1 -O2 -quiet pr51994.c
pr51994.c: In function ‘test’:
pr51994.c:17:3: internal compiler error: in extract_bit_field, at expmed.c:1701
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

[uros@localhost testalpha]$ ~/gcc-build-alpha-46/gcc/cc1 -O2 -quiet config.i
config.c: In function ‘git_config_rename_section’:
config.c:1533:16: internal compiler error: in store_bit_field, at expmed.c:839
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.