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* [Bug c++/52966] New: ill-formed template constexpr functions are accepted?
@ 2012-04-12 23:45 drwowe at yahoo dot com
2015-07-18 15:43 ` [Bug c++/52966] " yury at shurup dot com
0 siblings, 1 reply; 2+ messages in thread
From: drwowe at yahoo dot com @ 2012-04-12 23:45 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52966
Bug #: 52966
Summary: ill-formed template constexpr functions are accepted?
Classification: Unclassified
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: drwowe@yahoo.com
The following code successfully compiles on g++ 4.7.0 with -std=c++11. I'm not
a language lawyer, but it seems like it shouldn't since the A::two() function
breaks the constexpr rules, either at template definition or template
instantiation time.
------
template<class T>
struct A {
static int two_nonconst() { return 2; }
static constexpr int two() { return two_nonconst(); }
}
constexpr int two() {
return A<int>::two();
}
------
There is no error message until you actually try to use the two() function in
an appropriate context, which could be very confusing.
------
int x[two()];
------
error: size of array 'x' is not an integral constant-expression
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/52966] ill-formed template constexpr functions are accepted?
2012-04-12 23:45 [Bug c++/52966] New: ill-formed template constexpr functions are accepted? drwowe at yahoo dot com
@ 2015-07-18 15:43 ` yury at shurup dot com
0 siblings, 0 replies; 2+ messages in thread
From: yury at shurup dot com @ 2015-07-18 15:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52966
Yury V. Zaytsev <yury at shurup dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |yury at shurup dot com
--- Comment #1 from Yury V. Zaytsev <yury at shurup dot com> ---
I've been also hit by this bug recently on gcc 4.9.2 and gcc 5.1. I haven't
tried gcc 5.2 yet, but I would assume it's still there.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2012-04-12 23:45 [Bug c++/52966] New: ill-formed template constexpr functions are accepted? drwowe at yahoo dot com
2015-07-18 15:43 ` [Bug c++/52966] " yury at shurup dot com
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