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* [Bug libstdc++/111162] New: signed integer overflow triggered by std::chrono::parse
@ 2023-08-26 12:42 gcc at pauldreik dot se
2023-08-26 13:52 ` [Bug libstdc++/111162] " redi at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: gcc at pauldreik dot se @ 2023-08-26 12:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111162
Bug ID: 111162
Summary: signed integer overflow triggered by
std::chrono::parse
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc at pauldreik dot se
Target Milestone: ---
The following program:
#include <chrono>
#include <format>
#include <sstream>
int main() {
std::istringstream is("21474837");
std::chrono::minutes x;
is >> std::chrono::parse("%8C", x);
}
invokes undefined behaviour. If compiled with the current gcc trunk, one gets
this when executed:
/opt/compiler-explorer/gcc-trunk-20230824/include/c++/14.0.0/bits/chrono_io.h:3174:20:
runtime error: signed integer overflow: 21474837 * 100 cannot be represented in
type 'int'
link to reproducer (uses gcc trunk, may go stale quick):
https://godbolt.org/z/h617GT4EY
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/111162] signed integer overflow triggered by std::chrono::parse
2023-08-26 12:42 [Bug libstdc++/111162] New: signed integer overflow triggered by std::chrono::parse gcc at pauldreik dot se
@ 2023-08-26 13:52 ` redi at gcc dot gnu.org
2023-08-29 12:10 ` redi at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2023-08-26 13:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111162
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Target Milestone|--- |13.3
Status|UNCONFIRMED |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Last reconfirmed| |2023-08-26
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/111162] signed integer overflow triggered by std::chrono::parse
2023-08-26 12:42 [Bug libstdc++/111162] New: signed integer overflow triggered by std::chrono::parse gcc at pauldreik dot se
2023-08-26 13:52 ` [Bug libstdc++/111162] " redi at gcc dot gnu.org
@ 2023-08-29 12:10 ` redi at gcc dot gnu.org
2023-09-01 10:55 ` cvs-commit at gcc dot gnu.org
2023-09-01 10:57 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2023-08-29 12:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111162
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Testing a patch ...
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/111162] signed integer overflow triggered by std::chrono::parse
2023-08-26 12:42 [Bug libstdc++/111162] New: signed integer overflow triggered by std::chrono::parse gcc at pauldreik dot se
2023-08-26 13:52 ` [Bug libstdc++/111162] " redi at gcc dot gnu.org
2023-08-29 12:10 ` redi at gcc dot gnu.org
@ 2023-09-01 10:55 ` cvs-commit at gcc dot gnu.org
2023-09-01 10:57 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2023-09-01 10:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111162
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <redi@gcc.gnu.org>:
https://gcc.gnu.org/g:207c507499d23f0176cbfdfe96d3cd50dec39584
commit r14-3609-g207c507499d23f0176cbfdfe96d3cd50dec39584
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Tue Aug 29 13:07:21 2023 +0100
libstdc++: Do not allow chrono::parse to overflow for %C [PR111162]
libstdc++-v3/ChangeLog:
PR libstdc++/111162
* include/bits/chrono_io.h (_Parser::Operator()): Check %C
values are in range of year::min() to year::max().
* testsuite/std/time/parse.cc: Check out of range centuries.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/111162] signed integer overflow triggered by std::chrono::parse
2023-08-26 12:42 [Bug libstdc++/111162] New: signed integer overflow triggered by std::chrono::parse gcc at pauldreik dot se
` (2 preceding siblings ...)
2023-09-01 10:55 ` cvs-commit at gcc dot gnu.org
@ 2023-09-01 10:57 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2023-09-01 10:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111162
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Target Milestone|13.3 |14.0
Resolution|--- |FIXED
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This should be fixed now, thanks for the report.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2023-09-01 10:57 UTC | newest]
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