Rutger Hofman wrote:
Andrew Lunn wrote:
Hi Folks
Can anybody figure out what the compiler does not like:
/home/lunn/eCos/anoncvs-clean/packages/language/c/libc/string/current/tests/memchr.c:
In function 'main':
/home/lunn/eCos/anoncvs-clean/packages/language/c/libc/string/current/tests/memchr.c:103:
warning: assignment discards qualifiers from pointer target type
OK, I try a bit harder. I reproduce this warning only with my native
gcc-snapshot which is gcc (Ubuntu 20080404-0ubuntu1) 4.3.1 20080404
(prerelease) [gcc-4_3-branch revision 133917]. None of the other gcc's
do this, not even 4.3.2-arm-eabi.
The result of memchr is assigned to a variable void *ret. If the type of
ret is changed to 'const void *', the warning disappears. This is in
contradiction with the prototype for memchr: void *memchr(const void *s,
int c, size_t n). (Even though a return of const void * might actually
be better).
Rutger
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