http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57026
Bug #: 57026
Summary: ice: SSA corruption
Classification: Unclassified
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: dcb...@hotmail.com
Created attachment 29910
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29910
C source code
I just tried to compile the package GREYCstoration-2.8-15.fc20
on gcc-4.9 trunk dated 20130421 on an AMD x86_64 box.
The compiler said
Unable to coalesce ssa_names 97 and 101 which are marked as MUST COALESCE.
image_depth_97(ab) and image_depth_101(ab)
coders/png.c: In function 'WriteOnePNGImage':
coders/png.c:6287:23: internal compiler error: SSA corruption
static MagickPassFail WriteOnePNGImage(MngInfo *mng_info,
^
0x9b1baf fail_abnormal_edge_coalesce
../../src/trunk/gcc/tree-ssa-coalesce.c:934
0x9b1baf coalesce_partitions
../../src/trunk/gcc/tree-ssa-coalesce.c:1236
0x9b1baf coalesce_ssa_name()
../../src/trunk/gcc/tree-ssa-coalesce.c:1373
0x969ba3 remove_ssa_form
../../src/trunk/gcc/tree-outof-ssa.c:900
0x969ba3 rewrite_out_of_ssa(ssaexpand*)
../../src/trunk/gcc/tree-outof-ssa.c:1133
0x5f5f44 gimple_expand_cfg
../../src/trunk/gcc/cfgexpand.c:4480
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.
Preprocessed source code attached. Flag -O2 required.
