http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46114
Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2010.10.21 20:36:21
Ever Confirmed|0 |1
--- Comment #3 from Rainer Orth <ro at gcc dot gnu.org> 2010-10-21 20:36:21 UTC
---
I could reproduce the bug with the attached testcase (go.c with main,
pr46114.c reduced from g++spec.c).
Compile with
% gcc -O2 -o go go.c pr46114.c
After the culprit patch, the program prints
opt_index = 902 arg = 8049253 value = 1 lang_mask = 65536 decoded = 1
opt_index = 902 arg = 8049264 value = 1 lang_mask = 65536 decoded = 804a90c
opt_index = 1019 arg = 0 value = 1 lang_mask = 65536 decoded = 804a938
i.e. decoded (a pointer) is invalid. Before, one gets
opt_index = 902 arg = 8049273 value = 1 lang_mask = 65536 decoded = 804a900
opt_index = 902 arg = 8049284 value = 1 lang_mask = 65536 decoded = 804a92c
opt_index = 1019 arg = 0 value = 1 lang_mask = 65536 decoded = 804a958
The bug is extremely sensitive to the details of the input, so I didn't try
to reduce it further.
Please fix, this is really ugly and makes gcc with gld completely useless.
