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[Bug c/30426] New: Warning when using strndup
- From: "raimund at cs dot auckland dot ac dot nz" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 10 Jan 2007 20:32:52 -0000
- Subject: [Bug c/30426] New: Warning when using strndup
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
The tiny test program below produces a warning (specifics commented in code
below). From my understanding, no warning should appear on compilation.
Current workaround: Warning disappears once line 2 (right after #include) is
uncommented.
Code:
---------------------------------------------------------------
#include <string.h>
// extern char *strndup (__const char *__string, size_t __n);
int main() {
char *str="one two three",
*one=0;
// command below produces warning
// "a.c:18: warning: assignment makes pointer from integer without a cast"
// on openSuSE 10.0 (gcc (GCC) 4.0.2 20050901 (prerelease) (SUSE Linux))
// command below produces warning
// "a.c:18: warning: incompatible implicit declaration of built-in function
?strndup?"
// on openSuSE 10.2 (gcc (GCC) 4.1.2 20061115 (prerelease) (SUSE Linux))
// warnings disappear when line 3 is uncommented.
one = strndup(str,3);
}
---------------------------------------------------------------
--
Summary: Warning when using strndup
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: raimund at cs dot auckland dot ac dot nz
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30426