* [Bug c++/55643] g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use
2012-12-10 20:40 [Bug c++/55643] New: g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use dholbert at cs dot stanford.edu
@ 2012-12-10 20:41 ` dholbert at cs dot stanford.edu
2012-12-10 20:42 ` dholbert at cs dot stanford.edu
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From: dholbert at cs dot stanford.edu @ 2012-12-10 20:41 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55643
--- Comment #1 from Daniel Holbert <dholbert at cs dot stanford.edu> 2012-12-10 20:41:00 UTC ---
Created attachment 28917
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28917
testcase cpp file
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/55643] g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use
2012-12-10 20:40 [Bug c++/55643] New: g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use dholbert at cs dot stanford.edu
2012-12-10 20:41 ` [Bug c++/55643] " dholbert at cs dot stanford.edu
@ 2012-12-10 20:42 ` dholbert at cs dot stanford.edu
2012-12-10 20:44 ` dholbert at cs dot stanford.edu
` (7 subsequent siblings)
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From: dholbert at cs dot stanford.edu @ 2012-12-10 20:42 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55643
--- Comment #2 from Daniel Holbert <dholbert at cs dot stanford.edu> 2012-12-10 20:42:03 UTC ---
The command I'm using to compile is:
> g++-4.7 -Wall -std=c++11 gcc-warning-test.cpp
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/55643] g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use
2012-12-10 20:40 [Bug c++/55643] New: g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use dholbert at cs dot stanford.edu
2012-12-10 20:41 ` [Bug c++/55643] " dholbert at cs dot stanford.edu
2012-12-10 20:42 ` dholbert at cs dot stanford.edu
@ 2012-12-10 20:44 ` dholbert at cs dot stanford.edu
2012-12-10 21:17 ` [Bug c++/55643] [4.7/4.8 Regression] g++ incorrectly prints " jakub at gcc dot gnu.org
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From: dholbert at cs dot stanford.edu @ 2012-12-10 20:44 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55643
--- Comment #3 from Daniel Holbert <dholbert at cs dot stanford.edu> 2012-12-10 20:43:47 UTC ---
Created attachment 28918
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28918
testcase preprocessed file (from run w/ --save-temps)
For reference, here's the preprocessed .ii file from running
> g++-4.7 --save-temps -Wall -std=c++11 gcc-warning-test.cpp
per the last recommendation at http://gcc.gnu.org/bugs/#need
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/55643] [4.7/4.8 Regression] g++ incorrectly prints "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use
2012-12-10 20:40 [Bug c++/55643] New: g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use dholbert at cs dot stanford.edu
` (2 preceding siblings ...)
2012-12-10 20:44 ` dholbert at cs dot stanford.edu
@ 2012-12-10 21:17 ` jakub at gcc dot gnu.org
2012-12-10 23:54 ` [Bug c++/55643] [4.7/4.8 Regression] [C++11] incorrect "warning: variable ‘myVar’ set but not used" with an "enum class"-typed variable is casted to double for the use pinskia at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2012-12-10 21:17 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55643
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2012-12-10
CC| |jakub at gcc dot gnu.org
AssignedTo|unassigned at gcc dot |jakub at gcc dot gnu.org
|gnu.org |
Target Milestone|--- |4.7.3
Summary|g++ 4.7 incorrectly prints |[4.7/4.8 Regression] g++
|"warning: variable ‘myVar’ |incorrectly prints
|set but not used |"warning: variable ‘myVar’
|[-Wunused-but-set-variable] |set but not used
|" when an "enum |[-Wunused-but-set-variable]
|class"-typed variable is |" when an "enum
|cast to double before use |class"-typed variable is
| |cast to double before use
Ever Confirmed|0 |1
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/55643] [4.7/4.8 Regression] [C++11] incorrect "warning: variable ‘myVar’ set but not used" with an "enum class"-typed variable is casted to double for the use
2012-12-10 20:40 [Bug c++/55643] New: g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use dholbert at cs dot stanford.edu
` (3 preceding siblings ...)
2012-12-10 21:17 ` [Bug c++/55643] [4.7/4.8 Regression] g++ incorrectly prints " jakub at gcc dot gnu.org
@ 2012-12-10 23:54 ` pinskia at gcc dot gnu.org
2012-12-11 8:07 ` jakub at gcc dot gnu.org
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9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-12-10 23:54 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55643
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Version|unknown |4.7.2
Summary|[4.7/4.8 Regression] g++ |[4.7/4.8 Regression]
|incorrectly prints |[C++11] incorrect
|"warning: variable ‘myVar’ |"warning: variable ‘myVar’
|set but not used |set but not used" with an
|[-Wunused-but-set-variable] |"enum class"-typed variable
|" when an "enum |is casted to double for the
|class"-typed variable is |use
|cast to double before use |
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-12-10 23:54:04 UTC ---
Here is a small testcase without any includes:
enum class MyEnum
{
eSomeValue = 123
};
void f(const char*, ...);
int main() {
MyEnum myVar = MyEnum::eSomeValue;
// As far as Wunused-but-set-variable is concerned, any of the following
// will successfully "use" myVar:
// printf("%d\n", myVar);
// printf("%d\n", (int)myVar);
// printf("%u\n", (unsigned)myVar);
// ...but these do not:
f("%f\n", (double)myVar);
f("%f\n", (float)myVar);
return 0;
}
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/55643] [4.7/4.8 Regression] [C++11] incorrect "warning: variable ‘myVar’ set but not used" with an "enum class"-typed variable is casted to double for the use
2012-12-10 20:40 [Bug c++/55643] New: g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use dholbert at cs dot stanford.edu
` (4 preceding siblings ...)
2012-12-10 23:54 ` [Bug c++/55643] [4.7/4.8 Regression] [C++11] incorrect "warning: variable ‘myVar’ set but not used" with an "enum class"-typed variable is casted to double for the use pinskia at gcc dot gnu.org
@ 2012-12-11 8:07 ` jakub at gcc dot gnu.org
2012-12-11 19:02 ` jakub at gcc dot gnu.org
` (3 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-12-11 8:07 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55643
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-12-11 08:06:31 UTC ---
Created attachment 28922
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28922
gcc48-pr55643.patch
Untested fix.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/55643] [4.7/4.8 Regression] [C++11] incorrect "warning: variable ‘myVar’ set but not used" with an "enum class"-typed variable is casted to double for the use
2012-12-10 20:40 [Bug c++/55643] New: g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use dholbert at cs dot stanford.edu
` (5 preceding siblings ...)
2012-12-11 8:07 ` jakub at gcc dot gnu.org
@ 2012-12-11 19:02 ` jakub at gcc dot gnu.org
2012-12-11 19:06 ` jakub at gcc dot gnu.org
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9 siblings, 0 replies; 11+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-12-11 19:02 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55643
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-12-11 19:01:51 UTC ---
Author: jakub
Date: Tue Dec 11 19:01:45 2012
New Revision: 194415
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194415
Log:
PR c++/55643
* expr.c (mark_exp_read): Handle FLOAT_EXPR similarly to NOP_EXPR.
* g++.dg/warn/Wunused-var-19.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wunused-var-19.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/expr.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/55643] [4.7/4.8 Regression] [C++11] incorrect "warning: variable ‘myVar’ set but not used" with an "enum class"-typed variable is casted to double for the use
2012-12-10 20:40 [Bug c++/55643] New: g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use dholbert at cs dot stanford.edu
` (6 preceding siblings ...)
2012-12-11 19:02 ` jakub at gcc dot gnu.org
@ 2012-12-11 19:06 ` jakub at gcc dot gnu.org
2012-12-11 19:08 ` jakub at gcc dot gnu.org
2012-12-11 19:20 ` dholbert at cs dot stanford.edu
9 siblings, 0 replies; 11+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-12-11 19:06 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55643
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-12-11 19:06:23 UTC ---
Author: jakub
Date: Tue Dec 11 19:06:19 2012
New Revision: 194416
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194416
Log:
PR c++/55643
* expr.c (mark_exp_read): Handle FLOAT_EXPR similarly to NOP_EXPR.
* g++.dg/warn/Wunused-var-19.C: New test.
Added:
branches/gcc-4_7-branch/gcc/testsuite/g++.dg/warn/Wunused-var-19.C
Modified:
branches/gcc-4_7-branch/gcc/cp/ChangeLog
branches/gcc-4_7-branch/gcc/cp/expr.c
branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/55643] [4.7/4.8 Regression] [C++11] incorrect "warning: variable ‘myVar’ set but not used" with an "enum class"-typed variable is casted to double for the use
2012-12-10 20:40 [Bug c++/55643] New: g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use dholbert at cs dot stanford.edu
` (7 preceding siblings ...)
2012-12-11 19:06 ` jakub at gcc dot gnu.org
@ 2012-12-11 19:08 ` jakub at gcc dot gnu.org
2012-12-11 19:20 ` dholbert at cs dot stanford.edu
9 siblings, 0 replies; 11+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-12-11 19:08 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55643
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-12-11 19:07:41 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/55643] [4.7/4.8 Regression] [C++11] incorrect "warning: variable ‘myVar’ set but not used" with an "enum class"-typed variable is casted to double for the use
2012-12-10 20:40 [Bug c++/55643] New: g++ 4.7 gives "warning: variable ‘myVar’ set but not used [-Wunused-but-set-variable]" when an "enum class"-typed variable is cast to double before use dholbert at cs dot stanford.edu
` (8 preceding siblings ...)
2012-12-11 19:08 ` jakub at gcc dot gnu.org
@ 2012-12-11 19:20 ` dholbert at cs dot stanford.edu
9 siblings, 0 replies; 11+ messages in thread
From: dholbert at cs dot stanford.edu @ 2012-12-11 19:20 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55643
--- Comment #9 from Daniel Holbert <dholbert at cs dot stanford.edu> 2012-12-11 19:20:34 UTC ---
Thanks for the quick turnaround!
^ permalink raw reply [flat|nested] 11+ messages in thread