Actually xstest.c dosen't call strcmp at all. The relevant code is
xstest.xs:
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
MODULE = xstest PACKAGE = xstest
void
hello()
CODE:
printf("Hello, world!\n");
xstest.c:
/*
* This file was generated automatically by xsubpp version 1.9508 from
+ the
* contents of xstest.xs. Do not edit this file, edit xstest.xs instea
+d.
*
* ANY CHANGES MADE HERE WILL BE LOST!
*
*/
#line 1 "xstest.xs"
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#line 16 "xstest.c"
XS(XS_xstest_hello)
{
dXSARGS;
if (items != 0)
Perl_croak(aTHX_ "Usage: xstest::hello()");
{
#line 11 "xstest.xs"
printf("Hello, world!\n");
#line 25 "xstest.c"
}
XSRETURN_EMPTY;
}
#ifdef __cplusplus
extern "C"
#endif
XS(boot_xstest)
{
dXSARGS;
char* file = __FILE__;
XS_VERSION_BOOTCHECK ;
newXS("xstest::hello", XS_xstest_hello, file);
XSRETURN_YES;
}