http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58463
Bug ID: 58463
Summary: ICE with -fdump-tree-all-all in vector indexed access
Product: gcc
Version: 4.8.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: pa...@matos-sorge.com
Created attachment 30855
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30855&action=edit
Code example to reproduce ICE
GCC tries to access varmap through get_varinfo in tree-ssa-structalias.c, but
it fails with an ICE.
I have attached a reduced code example to reproduce the problem.
The command line and output with 4.8.1 is:
$ ~/work/tmp/gcc-4.8.1/gcc/cc1 -fpreprocessed -fdump-tree-all-all -O2
core_list_join.i
core_list_join.i:4:1: warning: no semicolon at end of struct or union [enabled
by default]
}
^
fn1
Analyzing compilation unit
Performing interprocedural optimizations
<*free_lang_data> <visibility> <early_local_cleanups>
core_list_join.i: In function 'fn1':
core_list_join.i:9:1: internal compiler error: in operator[], at vec.h:815
}
^
0xbfd572 vec<variable_info*, va_heap, vl_embed>::operator[](unsigned int)
/home/pmatos/work/gcc-releases/gcc-4.8.1/gcc/vec.h:815
0xbfcea0 vec<variable_info*, va_heap, vl_ptr>::operator[](unsigned int)
/home/pmatos/work/gcc-releases/gcc-4.8.1/gcc/vec.h:1244
0xbeb5ba get_varinfo
/home/pmatos/work/gcc-releases/gcc-4.8.1/gcc/tree-ssa-structalias.c:319
0xbefa59 perform_var_substitution
/home/pmatos/work/gcc-releases/gcc-4.8.1/gcc/tree-ssa-structalias.c:2244
0xbfb279 solve_constraints
/home/pmatos/work/gcc-releases/gcc-4.8.1/gcc/tree-ssa-structalias.c:6569
0xbfb679 compute_points_to_sets
/home/pmatos/work/gcc-releases/gcc-4.8.1/gcc/tree-ssa-structalias.c:6665
0xbfbdca compute_may_aliases()
/home/pmatos/work/gcc-releases/gcc-4.8.1/gcc/tree-ssa-structalias.c:6814
0x967b9e execute_function_todo
/home/pmatos/work/gcc-releases/gcc-4.8.1/gcc/passes.c:1941
0x966f88 do_per_function
/home/pmatos/work/gcc-releases/gcc-4.8.1/gcc/passes.c:1701
0x967d64 execute_todo
/home/pmatos/work/gcc-releases/gcc-4.8.1/gcc/passes.c:1996
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.
