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* [Bug c++/66635] New: g++ ICE when compiling constexpr code with comma operator
@ 2015-06-23 9:45 andreas at sandberg dot pp.se
2015-06-23 18:21 ` [Bug c++/66635] " daniel.kruegler at googlemail dot com
0 siblings, 1 reply; 2+ messages in thread
From: andreas at sandberg dot pp.se @ 2015-06-23 9:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66635
Bug ID: 66635
Summary: g++ ICE when compiling constexpr code with comma
operator
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: andreas at sandberg dot pp.se
Target Milestone: ---
Use of the comma operator in constexpr environment causes ICE in g++ 5.1.0. The
following test case triggers the bug:
--- Begin test case ---
#include <cassert>
struct Foo {
constexpr Foo(const unsigned i) : val(i) {}
constexpr Foo operator-(const Foo &rhs) const {
return assert(val >= rhs.val), Foo(val - rhs.val);
}
unsigned val;
};
constexpr Foo foo(Foo(1) - Foo(2));
--- End test case ---
I have been able to reproduce the bug on both Linux and MacOS for gcc version
5.1.0. A colleague tested this using trunk yesterday and the error still seems
to be present. g++ version 4.9.1 does not seem to suffer from this bug.
This seems to be closely related to bug 54777.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/66635] g++ ICE when compiling constexpr code with comma operator
2015-06-23 9:45 [Bug c++/66635] New: g++ ICE when compiling constexpr code with comma operator andreas at sandberg dot pp.se
@ 2015-06-23 18:21 ` daniel.kruegler at googlemail dot com
0 siblings, 0 replies; 2+ messages in thread
From: daniel.kruegler at googlemail dot com @ 2015-06-23 18:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66635
Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel.kruegler@googlemail.
| |com
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
Please note that the code itself is invalid unless you require NDEBUG to be
defined.
>From gcc-bugs-return-490001-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jun 23 18:29:12 2015
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From: "daniel.kruegler at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/66639] Feature request C++: mark __func__ , __FUNCTION__ & __PRETTY_FUNCTION__ as constexpr
Date: Tue, 23 Jun 2015 18:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66639
Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel.kruegler@googlemail.
| |com
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
Strictly speaking your request would be non-conforming, because the semantics
of e.g. __func__ is specified to be
static const char __func__[] = "function-name";
If at all, this could only be provided as compiler extension.
>From gcc-bugs-return-490002-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jun 23 18:41:22 2015
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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/66626] [i386] gcc.dg/torture/stackalign/non-local-goto-5.c segfaults w/ -mregparm=3
Date: Tue, 23 Jun 2015 18:41:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-06-23
Ever confirmed|0 |1
--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Confirmed, reduced testcase:
--cut here--
extern void abort (void);
int s (int i)
{
__label__ l1;
int f (int i)
{
if (i == 2)
goto l1;
return 0;
}
return f (i);
l1:;
return 1;
}
int main ()
{
if (s (2) != 1)
abort ();
return 0;
}
--cut here--
$ gcc -O2 -mregparm=3 -m32 t.c
$ ./a.out
Segmentation fault (core dumped)
>From gcc-bugs-return-490003-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jun 23 18:47:46 2015
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From: "mrs at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/34010] [4.9 Regression] ppc64 bad stdargs codegen for zero sized objects
Date: Tue, 23 Jun 2015 18:47:00 -0000
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mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.9.3 |---
--- Comment #14 from mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> ---
Update target milestone to nothing.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2015-06-23 9:45 [Bug c++/66635] New: g++ ICE when compiling constexpr code with comma operator andreas at sandberg dot pp.se
2015-06-23 18:21 ` [Bug c++/66635] " daniel.kruegler at googlemail dot com
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