* [Bug ipa/66793] ICE at -Os and above on x86_64-linux-gnu (verify_flow_info failed)
[not found] <bug-66793-4@http.gcc.gnu.org/bugzilla/>
@ 2015-07-08 8:31 ` rguenth at gcc dot gnu.org
2015-07-08 11:54 ` [Bug ipa/66793] [5 Regression] " rguenth at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-08 8:31 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="UTF-8", Size: 4988 bytes --]
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66793
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-07-08
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
isolate-paths adds a __builtin_trap but appearantly doesn't split BBs properly:
t.c: In function ‘main’:
t.c:18:1: error: control flow in the middle of basic block 2
main ()
^
fn1 (MEM[(struct S0 *)0B]);
t.c:18:1: internal compiler error: verify_flow_info failed
this is because fn1 is noreturn.
>From gcc-bugs-return-491717-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jul 08 08:35:18 2015
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From: "adam at mizerski dot pl" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/66803] New: std::this_thread::sleep_for gets interrupted by signals.
Date: Wed, 08 Jul 2015 08:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf803
Bug ID: 66803
Summary: std::this_thread::sleep_for gets interrupted by
signals.
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: adam at mizerski dot pl
Target Milestone: ---
Created attachment 35930
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id5930&actioníit
preprocessed source
#include <chrono>
#include <iostream>
#include <thread>
#include <csignal>
void signal_handler(int) {}
int main()
{
using namespace std::chrono_literals;
std::signal(SIGUSR1, signal_handler);
const auto start = std::chrono::high_resolution_clock::now();
std::this_thread::sleep_for(5s);
const auto end = std::chrono::high_resolution_clock::now();
std::cout << "Waited " <<
std::chrono::duration_cast<std::chrono::seconds>(end-start).count() << " s\n";
return 0;
}
Compilation command: g++-5.1 -save-temps -std=c++14 test_cpp.cpp -o test_cpp
-O2 -Wall -Wextra -pedantic -pthread
Preprocessed source in attachment.
Testing command line: ./test_cpp & sleep 2 && kill -USR1 $!
Expected result: std::this_thread::sleep_for(5s); sleeps for 5 seconds.
Actual result: std::this_thread::sleep_for(5s); sleeps for 2 seconds.
The behavior of std::this_thread::sleep_for seems similar to sleep from
unistd.h - it gets interrupted by signal handler. But
std::this_thread::sleep_for unlike sleep has no way to report if it was
interrupted or time left to sleep. C++14 standard (N3797) in 30.3.2 says that
sleep_for should sleep specified amount of time and nothing about any
interrupts.
The same source compiled with "clang++ -std=c++14 -stdlib=libc++ -lc++abi
test_cpp.cpp -o test_cpp -O2" (with clang version 3.5.0) behaves as expected.
$ g++-5.1 -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-unknown-linux-gnu/5.1.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /usr/src/gcc/configure --disable-multilib
--enable-languages=c,c++
Thread model: posix
gcc version 5.1.0 (GCC)
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug ipa/66793] [5 Regression] ICE at -Os and above on x86_64-linux-gnu (verify_flow_info failed)
[not found] <bug-66793-4@http.gcc.gnu.org/bugzilla/>
2015-07-08 8:31 ` [Bug ipa/66793] ICE at -Os and above on x86_64-linux-gnu (verify_flow_info failed) rguenth at gcc dot gnu.org
@ 2015-07-08 11:54 ` rguenth at gcc dot gnu.org
2015-07-08 11:55 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-08 11:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66793
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |6.0
Target Milestone|--- |5.2
Summary|ICE at -Os and above on |[5 Regression] ICE at -Os
|x86_64-linux-gnu |and above on
|(verify_flow_info failed) |x86_64-linux-gnu
| |(verify_flow_info failed)
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk.
The issue is latent on the gcc5 branch (4.9 splits the block in cleanup-cfg).
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug ipa/66793] [5 Regression] ICE at -Os and above on x86_64-linux-gnu (verify_flow_info failed)
[not found] <bug-66793-4@http.gcc.gnu.org/bugzilla/>
2015-07-08 8:31 ` [Bug ipa/66793] ICE at -Os and above on x86_64-linux-gnu (verify_flow_info failed) rguenth at gcc dot gnu.org
2015-07-08 11:54 ` [Bug ipa/66793] [5 Regression] " rguenth at gcc dot gnu.org
@ 2015-07-08 11:55 ` rguenth at gcc dot gnu.org
2015-07-16 9:15 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-08 11:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66793
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Jul 8 11:54:28 2015
New Revision: 225546
URL: https://gcc.gnu.org/viewcvs?rev=225546&root=gcc&view=rev
Log:
2015-07-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/66793
* gimple-ssa-isolate-paths.c
(insert_trap_and_remove_trailing_statemen):
Properly split the block after stmts ending it.
* gcc.dg/torture/pr66793.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr66793.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-ssa-isolate-paths.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug ipa/66793] [5 Regression] ICE at -Os and above on x86_64-linux-gnu (verify_flow_info failed)
[not found] <bug-66793-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2015-07-08 11:55 ` rguenth at gcc dot gnu.org
@ 2015-07-16 9:15 ` rguenth at gcc dot gnu.org
2015-09-21 9:56 ` rguenth at gcc dot gnu.org
2015-09-21 9:57 ` rguenth at gcc dot gnu.org
5 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-16 9:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66793
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|5.2 |5.3
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 5.2 is being released, adjusting target milestone to 5.3.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug ipa/66793] [5 Regression] ICE at -Os and above on x86_64-linux-gnu (verify_flow_info failed)
[not found] <bug-66793-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2015-07-16 9:15 ` rguenth at gcc dot gnu.org
@ 2015-09-21 9:56 ` rguenth at gcc dot gnu.org
2015-09-21 9:57 ` rguenth at gcc dot gnu.org
5 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-09-21 9:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66793
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Sep 21 09:55:57 2015
New Revision: 227961
URL: https://gcc.gnu.org/viewcvs?rev=227961&root=gcc&view=rev
Log:
2015-09-21 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-07-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/66793
* gimple-ssa-isolate-paths.c
(insert_trap_and_remove_trailing_statemen):
Properly split the block after stmts ending it.
* gcc.dg/torture/pr66793.c: New testcase.
2015-08-05 Richard Biener <rguenther@suse.de>
PR tree-optimization/67055
* tree-ssa-ccp.c (fold_builtin_alloca_with_align): Handle
NULL gimple_block.
* g++.dg/torture/pr67055.C: New testcase.
2015-08-05 Richard Biener <rguenther@suse.de>
PR tree-optimization/67121
* tree-if-conv.c (combine_blocks): Clear range-info produced
by stmts no longer executed conditionally.
* gcc.dg/torture/pr67121.c: New testcase.
2015-09-16 Richard Biener <rguenther@suse.de>
PR middle-end/67271
* fold-const.c (native_encode_expr): Bail out on bogus offsets.
* gcc.dg/pr67271.c: New testcase.
2015-07-22 Richard Biener <rguenther@suse.de>
PR tree-optimization/66952
* tree-ssa-ifcombine.c (pass_tree_ifcombine::execute): For
blocks we end up executing unconditionally reset all SSA
info such as range and alignment.
* tree-ssanames.h (reset_flow_sensitive_info): Declare.
* tree-ssanames.c (reset_flow_sensitive_info): New function.
* gcc.dg/torture/pr66952.c: New testcase.
2015-09-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/67470
* tree-ssa-loop-im.c (execute_sm_if_changed): Preserve PHI
structure for PHI hoisting by inserting a forwarder block
if appropriate.
* gcc.dg/torture/pr67470.c: New testcase.
Added:
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr67055.C
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pr67271.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr66793.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr66952.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr67121.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr67470.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/fold-const.c
branches/gcc-5-branch/gcc/gimple-ssa-isolate-paths.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
branches/gcc-5-branch/gcc/tree-if-conv.c
branches/gcc-5-branch/gcc/tree-ssa-ccp.c
branches/gcc-5-branch/gcc/tree-ssa-ifcombine.c
branches/gcc-5-branch/gcc/tree-ssa-loop-im.c
branches/gcc-5-branch/gcc/tree-ssanames.c
branches/gcc-5-branch/gcc/tree-ssanames.h
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug ipa/66793] [5 Regression] ICE at -Os and above on x86_64-linux-gnu (verify_flow_info failed)
[not found] <bug-66793-4@http.gcc.gnu.org/bugzilla/>
` (4 preceding siblings ...)
2015-09-21 9:56 ` rguenth at gcc dot gnu.org
@ 2015-09-21 9:57 ` rguenth at gcc dot gnu.org
5 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-09-21 9:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66793
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Known to fail| |5.2.0
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 6+ messages in thread