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* [Bug c++/51912] New: [C++11] G++ accepts floating point case labels
@ 2012-01-20 7:46 jason at gcc dot gnu.org
2012-02-15 16:21 ` [Bug c++/51912] " paolo.carlini at oracle dot com
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: jason at gcc dot gnu.org @ 2012-01-20 7:46 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51912
Bug #: 51912
Summary: [C++11] G++ accepts floating point case labels
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Keywords: accepts-invalid
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: jason@gcc.gnu.org
5.19: A converted constant expression of type T is a literal constant
expression, implicitly converted to type T, where the implicit conversion (if
any) is permitted in a literal constant expression and the implicit conversion
sequence contains only user-defined conversions, lvalue-to-rvalue conversions
(4.1), integral promotions (4.5), and integral conversions (4.7) other than
narrowing conversions (8.5.4). [ Note: such expressions may be used as case
expressions (6.4.2), ....
So a floating point literal is not a valid case expression, since converting it
to the switch type would require a non-integral conversion.
void f(int i)
{
switch (i)
{
case 1.0:;
}
}
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug c++/51912] [C++11] G++ accepts floating point case labels 2012-01-20 7:46 [Bug c++/51912] New: [C++11] G++ accepts floating point case labels jason at gcc dot gnu.org @ 2012-02-15 16:21 ` paolo.carlini at oracle dot com 2012-02-15 16:41 ` paolo.carlini at oracle dot com ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: paolo.carlini at oracle dot com @ 2012-02-15 16:21 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51912 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-02-15 Ever Confirmed|0 |1 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/51912] [C++11] G++ accepts floating point case labels 2012-01-20 7:46 [Bug c++/51912] New: [C++11] G++ accepts floating point case labels jason at gcc dot gnu.org 2012-02-15 16:21 ` [Bug c++/51912] " paolo.carlini at oracle dot com @ 2012-02-15 16:41 ` paolo.carlini at oracle dot com 2012-05-29 14:02 ` paolo.carlini at oracle dot com ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: paolo.carlini at oracle dot com @ 2012-02-15 16:41 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51912 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |daniel.kruegler at | |googlemail dot com --- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-02-15 16:20:55 UTC --- *** Bug 52257 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/51912] [C++11] G++ accepts floating point case labels 2012-01-20 7:46 [Bug c++/51912] New: [C++11] G++ accepts floating point case labels jason at gcc dot gnu.org 2012-02-15 16:21 ` [Bug c++/51912] " paolo.carlini at oracle dot com 2012-02-15 16:41 ` paolo.carlini at oracle dot com @ 2012-05-29 14:02 ` paolo.carlini at oracle dot com 2013-08-14 18:01 ` paolo.carlini at oracle dot com 2013-08-14 21:44 ` paolo.carlini at oracle dot com 4 siblings, 0 replies; 6+ messages in thread From: paolo.carlini at oracle dot com @ 2012-05-29 14:02 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51912 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |paolo.carlini at oracle dot | |com --- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-05-29 13:58:21 UTC --- Jason, I'm thinking that this should be doable rather easily by adding a new LOOKUP_NO_NON_INTEGRAL mask and passing it down to standard_conversion from case_conversion via perform_implicit_conversion_flags. Then standard_conversion can exclude all such non-integral conversions, eg, for this specific testcase, return NULL from line #1332 because fcode == REALTYPE && (flags & LOOKUP_NO_NON_INTEGRAL)). Makes sense? ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/51912] [C++11] G++ accepts floating point case labels 2012-01-20 7:46 [Bug c++/51912] New: [C++11] G++ accepts floating point case labels jason at gcc dot gnu.org ` (2 preceding siblings ...) 2012-05-29 14:02 ` paolo.carlini at oracle dot com @ 2013-08-14 18:01 ` paolo.carlini at oracle dot com 2013-08-14 21:44 ` paolo.carlini at oracle dot com 4 siblings, 0 replies; 6+ messages in thread From: paolo.carlini at oracle dot com @ 2013-08-14 18:01 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51912 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED CC|paolo.carlini at oracle dot com | Assignee|unassigned at gcc dot gnu.org |paolo.carlini at oracle dot com Target Milestone|--- |4.9.0 --- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> --- Mine. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/51912] [C++11] G++ accepts floating point case labels 2012-01-20 7:46 [Bug c++/51912] New: [C++11] G++ accepts floating point case labels jason at gcc dot gnu.org ` (3 preceding siblings ...) 2013-08-14 18:01 ` paolo.carlini at oracle dot com @ 2013-08-14 21:44 ` paolo.carlini at oracle dot com 4 siblings, 0 replies; 6+ messages in thread From: paolo.carlini at oracle dot com @ 2013-08-14 21:44 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51912 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED --- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> --- Fixed for 4.9.0. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-08-14 21:44 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-01-20 7:46 [Bug c++/51912] New: [C++11] G++ accepts floating point case labels jason at gcc dot gnu.org 2012-02-15 16:21 ` [Bug c++/51912] " paolo.carlini at oracle dot com 2012-02-15 16:41 ` paolo.carlini at oracle dot com 2012-05-29 14:02 ` paolo.carlini at oracle dot com 2013-08-14 18:01 ` paolo.carlini at oracle dot com 2013-08-14 21:44 ` paolo.carlini at oracle dot com
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