AC_CHECK_FUNCS always succeeds on AIX with Autoconf 2.56

[Martin Frydl]

Hello,

I've put AC_CHECK_FUNCS(stricmp) to configure.in and it always succeeds on AIX with both IBM compiler and gcc. The test looks something like this:

char strncasecmp ();
char (*f) () = strncasecmp;

int main () {
return 0;
}

When this is compiled and linked, no error is reported. But when test from Autoconf 2.52 is used, everything works (i.e. reports error since stricmp is not available):

char stricmp ();
char (*f) ();

int main () {
f = stricmp;
return 0;
}

It looks like the first test is somehow "optimized" by compiler and thus is linkable. What about putting back the original test? Why was it changed?

My configuration:
AIX 4.3.3
IBM C/C++ 3.6.6
gcc 3.1.1

Thanks
Martin Frydl