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* [Bug c++/27083] New: [4.1,4.2 regression] bit-field value not narrowed
@ 2006-04-08 12:36 falk at debian dot org
2006-04-08 18:56 ` [Bug c++/27083] " pinskia at gcc dot gnu dot org
0 siblings, 1 reply; 2+ messages in thread
From: falk at debian dot org @ 2006-04-08 12:36 UTC (permalink / raw)
To: gcc-bugs
falk@juist:/tmp% cat test.c
#ifdef __cplusplus
extern "C"
#endif
void abort(void);
__attribute__((noinline))
unsigned long f(const unsigned long x) {
struct { unsigned long x : 1; } s;
s.x = x;
return s.x;
}
int main() {
if (f(3) != 1)
abort();
}
falk@juist:/tmp% gcc test.c && ./a.out
falk@juist:/tmp% g++ test.c && ./a.out
falk@juist:/tmp% g++ -O test.c && ./a.out
zsh: abort (core dumped) ./a.out
not a problem with 4.0 or earlier
--
Summary: [4.1,4.2 regression] bit-field value not narrowed
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: falk at debian dot org
GCC build triplet: alphaev68-unknown-linux-gnu
GCC host triplet: alphaev68-unknown-linux-gnu
GCC target triplet: alphaev68-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27083
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/27083] [4.1,4.2 regression] bit-field value not narrowed
2006-04-08 12:36 [Bug c++/27083] New: [4.1,4.2 regression] bit-field value not narrowed falk at debian dot org
@ 2006-04-08 18:56 ` pinskia at gcc dot gnu dot org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-04-08 18:56 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2006-04-08 18:56 -------
This is a dup of bug 26534.
*** This bug has been marked as a duplicate of 26534 ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27083
^ permalink raw reply [flat|nested] 2+ messages in thread
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2006-04-08 12:36 [Bug c++/27083] New: [4.1,4.2 regression] bit-field value not narrowed falk at debian dot org
2006-04-08 18:56 ` [Bug c++/27083] " pinskia at gcc dot gnu dot org
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