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* [Bug c/35207] New: gcc does not warn when wrong value is passed to enumerated data type
@ 2008-02-15 5:57 venk2ksubbu at gmail dot com
2008-02-15 9:44 ` [Bug c/35207] " rguenth at gcc dot gnu dot org
2008-02-15 10:25 ` manu at gcc dot gnu dot org
0 siblings, 2 replies; 3+ messages in thread
From: venk2ksubbu at gmail dot com @ 2008-02-15 5:57 UTC (permalink / raw)
To: gcc-bugs
Options given while compiling : -Wall
Complete command line: gcc -Wall <file name>
#include<stdio.h>
typedef enum {
ALL_COLORS,
GREEN_COLOR,
RED_COLOR,
BLUE_COLOR
}colors_e;
typedef struct _model {
colors_e model_color;
}model;
void test_valid(model *ptr)
{
switch(ptr->model_color) {
case ALL_COLORS:
printf("All colors is choosed\n");
break;
case GREEN_COLOR:
printf("Green color is choosed\n");
break;
case RED_COLOR:
printf("Red color is choosed\n");
break;
case BLUE_COLOR:
printf("Blue color is choosed\n");
break;
default:
printf("Wrong color is choosed\n");
}
}
int main()
{
model t;
t.model_color = 5;
test_valid(&t);
return 0;
}
In the above program I am passing invalid value to the structure member which
is an enumerated data type. While compiling I was expecting a warning, but I
did not get any warning. However, in the function a 'default' case is handled
to handle this type of invalid values, but this happens only when executing. Is
it possible to report a warning during compilation itself ?
--
Summary: gcc does not warn when wrong value is passed to
enumerated data type
Product: gcc
Version: 4.0.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: venk2ksubbu at gmail dot com
GCC host triplet: i386-redhat-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35207
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c/35207] gcc does not warn when wrong value is passed to enumerated data type
2008-02-15 5:57 [Bug c/35207] New: gcc does not warn when wrong value is passed to enumerated data type venk2ksubbu at gmail dot com
@ 2008-02-15 9:44 ` rguenth at gcc dot gnu dot org
2008-02-15 10:25 ` manu at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-02-15 9:44 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2008-02-15 09:43 -------
We can add a warning to follow C++ which would reject this code. EDG for
example says
t.c(38): warning #188: enumerated type mixed with another type
t.model_color = 5;
but the C std says the enum can hold all values represented by the underlying
type, so the code is behaving as required.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35207
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c/35207] gcc does not warn when wrong value is passed to enumerated data type
2008-02-15 5:57 [Bug c/35207] New: gcc does not warn when wrong value is passed to enumerated data type venk2ksubbu at gmail dot com
2008-02-15 9:44 ` [Bug c/35207] " rguenth at gcc dot gnu dot org
@ 2008-02-15 10:25 ` manu at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: manu at gcc dot gnu dot org @ 2008-02-15 10:25 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from manu at gcc dot gnu dot org 2008-02-15 10:24 -------
*** This bug has been marked as a duplicate of 7654 ***
--
manu at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |manu at gcc dot gnu dot org
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35207
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2008-02-15 10:25 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2008-02-15 5:57 [Bug c/35207] New: gcc does not warn when wrong value is passed to enumerated data type venk2ksubbu at gmail dot com
2008-02-15 9:44 ` [Bug c/35207] " rguenth at gcc dot gnu dot org
2008-02-15 10:25 ` manu at gcc dot gnu dot org
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