http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46833
Summary: ICE: SIGSEGV in expand_vector_operations
(tree-vect-generic.c:340) with
-fno-non-call-exceptions -ftree-vectorize
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: zso...@seznam.cz
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 22668
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22668
reduced testcase
Similiar to PR46805, I tried to C-ify the testcase (from .gimple dump), but it
didn't crash anymore.
valgrind output:
==22226== Conditional jump or move depends on uninitialised value(s)
==22226== at 0x595C61: Lex::require_line() (lex.cc:501)
==22226== by 0x597E1A: Lex::next_token() (lex.cc:544)
==22226== by 0x598532: Parse::peek_token() (parse.cc:64)
==22226== by 0x59A08A: Parse::package_clause() (parse.cc:4544)
==22226== by 0x5A6F7D: Parse::program() (parse.cc:4624)
==22226== by 0x5717AC: go_parse_input_files (go.cc:82)
==22226== by 0x91B517: toplev_main (toplev.c:579)
==22226== by 0x65EABBC: (below main) (in /lib64/libc-2.11.2.so)
==22226== Uninitialised value was created by a stack allocation
==22226== at 0x56E720: go_langhook_parse_file (go-lang.c:222)
==22226==
==22226== Invalid read of size 2
==22226== at 0xA4AB50: expand_vector_operations (tree-vect-generic.c:340)
==22226== by 0x83171E: execute_one_pass (passes.c:1553)
==22226== by 0x8319E4: execute_pass_list (passes.c:1608)
==22226== by 0x8319F6: execute_pass_list (passes.c:1609)
==22226== by 0x8319F6: execute_pass_list (passes.c:1609)
==22226== by 0x8319F6: execute_pass_list (passes.c:1609)
==22226== by 0x971B65: tree_rest_of_compilation (tree-optimize.c:422)
==22226== by 0xB37511: cgraph_expand_function (cgraphunit.c:1508)
==22226== by 0xB39AE9: cgraph_optimize (cgraphunit.c:1567)
==22226== by 0xB3A069: cgraph_finalize_compilation_unit (cgraphunit.c:1031)
==22226== by 0x57B97B: Gogo::write_globals() (gogo-tree.cc:825)
==22226== by 0x91B555: toplev_main (toplev.c:591)
==22226== by 0x65EABBC: (below main) (in /lib64/libc-2.11.2.so)
==22226== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==22226==
bigmap.go: In function 'main.seq':
bigmap.go:9:1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
(gdb) p compute_type
$1 = (tree) 0x0
Tested revisions:
r167471 - crash
