https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64391
Bug ID: 64391
Summary: ICE: SIGSEGV in get_attrs_for (trans-mem.c:179) with
-fgnu-tm and #pragma GCC ivdep
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Created attachment 34324
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34324&action=edit
reduced testcase
Compiler output:
$ gcc -fgnu-tm testcase.c -wrapper valgrind,-q
==19617== Invalid read of size 2
==19617== at 0xC5B0A4: get_attrs_for(tree_node const*) (trans-mem.c:179)
==19617== by 0xC5DE28: is_tm_may_cancel_outer(tree_node*) (trans-mem.c:320)
==19617== by 0xC5E147: diagnose_tm_1(gimple_stmt_iterator*, bool*,
walk_stmt_info*) (trans-mem.c:668)
==19617== by 0x9FC9CE: walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*) (gimple-walk.c:551)
==19617== by 0x9FCC08: walk_gimple_seq_mod(gimple_statement_base**,
tree_node* (*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node*
(*)(tree_node**, int*, void*), walk_stmt_info*) (gimple-walk.c:66)
==19617== by 0x9FCAB2: walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*) (gimple-walk.c:579)
==19617== by 0x9FCC08: walk_gimple_seq_mod(gimple_statement_base**,
tree_node* (*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node*
(*)(tree_node**, int*, void*), walk_stmt_info*) (gimple-walk.c:66)
==19617== by 0x9FCCA6: walk_gimple_seq(gimple_statement_base*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*) (gimple-walk.c:96)
==19617== by 0xC5DEC2: diagnose_tm_blocks (trans-mem.c:862)
==19617== by 0xC5DEC2: (anonymous
namespace)::pass_diagnose_tm_blocks::execute(function*) (trans-mem.c:891)
==19617== by 0xB5E85E: execute_one_pass(opt_pass*) (passes.c:2311)
==19617== by 0xB5ECD5: execute_pass_list_1(opt_pass*) [clone .constprop.73]
(passes.c:2363)
==19617== by 0xB5ED28: execute_pass_list(function*, opt_pass*)
(passes.c:2374)
==19617== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==19617==
testcase.c: In function 'foo':
testcase.c:2:1: internal compiler error: Segmentation fault
foo (void)
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
Tested revisions:
r219043 - ICE
4_9 r219040 - ICE
4_8 - ignoring #pragma GCC ivdep
