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* [Bug tree-optimization/56521] New: [4.8 Regression] Uninitialized value_id
@ 2013-03-04 15:09 jakub at gcc dot gnu.org
2013-03-04 15:43 ` [Bug tree-optimization/56521] " rguenth at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-03-04 15:09 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56521
Bug #: 56521
Summary: [4.8 Regression] Uninitialized value_id
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: jakub@gcc.gnu.org
CC: vries@gcc.gnu.org
Target: x86_64-linux
valgrind --track-origins=yes --leak-check=full --db-attach=yes ./cc1 \
-fno-diagnostics-show-caret -O2 -w -o pr36666.s \
/usr/src/gcc/gcc/testsuite/gcc.c-torture/compile/pr36666.c
shows:
==32184== Conditional jump or move depends on uninitialised value(s)
==32184== at 0xBCCF6D: add_to_value(unsigned int, pre_expr_d*)
(tree-ssa-pre.c:577)
==32184== by 0xBD519A: compute_avail() (tree-ssa-pre.c:3846)
==32184== by 0xBD7C1A: do_pre() (tree-ssa-pre.c:4711)
==32184== by 0x977D9B: execute_one_pass(opt_pass*) (passes.c:2330)
==32184== by 0x977F8F: execute_pass_list(opt_pass*) (passes.c:2378)
==32184== by 0x977FC0: execute_pass_list(opt_pass*) (passes.c:2379)
==32184== by 0x6963B7: expand_function(cgraph_node*) (cgraphunit.c:1640)
==32184== by 0x696872: expand_all_functions() (cgraphunit.c:1744)
==32184== by 0x6972FC: compile() (cgraphunit.c:2042)
==32184== by 0x69747B: finalize_compilation_unit() (cgraphunit.c:2119)
==32184== by 0x5326B7: c_write_global_declarations() (c-decl.c:10118)
==32184== by 0xA68DEE: compile_file() (toplev.c:557)
==32184== Uninitialised value was created by a client request
==32184== at 0x6048D6: pool_alloc(alloc_pool_def*) (alloc-pool.c:327)
==32184== by 0xBF7201: visit_reference_op_call(tree_node*,
gimple_statement_d*) (tree-ssa-sccvn.c:2738)
==32184== by 0xBF91FC: visit_use(tree_node*) (tree-ssa-sccvn.c:3503)
==32184== by 0xBF982E: process_scc(vec<tree_node*, va_heap, vl_ptr>)
(tree-ssa-sccvn.c:3643)
==32184== by 0xBF9C64: extract_and_process_scc_for_name(tree_node*)
(tree-ssa-sccvn.c:3727)
==32184== by 0xBF9E0F: DFS(tree_node*) (tree-ssa-sccvn.c:3781)
==32184== by 0xBFA8F5: run_scc_vn(vn_lookup_kind) (tree-ssa-sccvn.c:4027)
==32184== by 0xBD7BF5: do_pre() (tree-ssa-pre.c:4701)
==32184== by 0x977D9B: execute_one_pass(opt_pass*) (passes.c:2330)
==32184== by 0x977F8F: execute_pass_list(opt_pass*) (passes.c:2378)
==32184== by 0x977FC0: execute_pass_list(opt_pass*) (passes.c:2379)
==32184== by 0x6963B7: expand_function(cgraph_node*) (cgraphunit.c:1640)
and plenty of other errors. visit_reference_op_call doesn't initialize
value_id field, before http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=189323
richi said value_id was supposed to be initialized later on through
set_value_id_for_result but as lhs here is NULL or not SSA_NAME, that function
doesn't do anything.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/56521] [4.8 Regression] Uninitialized value_id
2013-03-04 15:09 [Bug tree-optimization/56521] New: [4.8 Regression] Uninitialized value_id jakub at gcc dot gnu.org
@ 2013-03-04 15:43 ` rguenth at gcc dot gnu.org
2013-03-05 11:37 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-03-04 15:43 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56521
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-03-04
CC| |rguenth at gcc dot gnu.org
Target Milestone|--- |4.8.0
Ever Confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-04 15:43:27 UTC ---
Confirmed.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/56521] [4.8 Regression] Uninitialized value_id
2013-03-04 15:09 [Bug tree-optimization/56521] New: [4.8 Regression] Uninitialized value_id jakub at gcc dot gnu.org
2013-03-04 15:43 ` [Bug tree-optimization/56521] " rguenth at gcc dot gnu.org
@ 2013-03-05 11:37 ` rguenth at gcc dot gnu.org
2013-03-05 15:04 ` rguenth at gcc dot gnu.org
2013-03-05 15:13 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-03-05 11:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56521
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org
|gnu.org |
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-05 11:36:30 UTC ---
Mine.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/56521] [4.8 Regression] Uninitialized value_id
2013-03-04 15:09 [Bug tree-optimization/56521] New: [4.8 Regression] Uninitialized value_id jakub at gcc dot gnu.org
2013-03-04 15:43 ` [Bug tree-optimization/56521] " rguenth at gcc dot gnu.org
2013-03-05 11:37 ` rguenth at gcc dot gnu.org
@ 2013-03-05 15:04 ` rguenth at gcc dot gnu.org
2013-03-05 15:13 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-03-05 15:04 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56521
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-05 15:03:07 UTC ---
Author: rguenth
Date: Tue Mar 5 15:02:58 2013
New Revision: 196465
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196465
Log:
2013-03-05 Richard Biener <rguenther@suse.de>
PR tree-optimization/56521
* tree-ssa-sccvn.c (set_value_id_for_result): Always initialize
value-id.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-sccvn.c
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/56521] [4.8 Regression] Uninitialized value_id
2013-03-04 15:09 [Bug tree-optimization/56521] New: [4.8 Regression] Uninitialized value_id jakub at gcc dot gnu.org
` (2 preceding siblings ...)
2013-03-05 15:04 ` rguenth at gcc dot gnu.org
@ 2013-03-05 15:13 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-03-05 15:13 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56521
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-05 15:13:13 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-03-05 15:13 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2013-03-04 15:09 [Bug tree-optimization/56521] New: [4.8 Regression] Uninitialized value_id jakub at gcc dot gnu.org
2013-03-04 15:43 ` [Bug tree-optimization/56521] " rguenth at gcc dot gnu.org
2013-03-05 11:37 ` rguenth at gcc dot gnu.org
2013-03-05 15:04 ` rguenth at gcc dot gnu.org
2013-03-05 15:13 ` rguenth at gcc dot gnu.org
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