# Check if the compiler will optimize out functions
conf.CHECK_CODE('''
-if (0) {
- this_function_does_not_exist();
-} else {
- return 1;
+#include <sys/types.h>
+size_t __unsafe_string_function_usage_here_size_t__(void);
+#define CHECK_STRING_SIZE(d, len) (sizeof(d) != (len) && sizeof(d) != sizeof(char *))
+static size_t push_string_check_fn(void *dest, const char *src, size_t dest_len) {
+ return 0;
+}
+
+#define push_string_check(dest, src, dest_len) \
+ (CHECK_STRING_SIZE(dest, dest_len) \
+ ? __unsafe_string_function_usage_here_size_t__() \
+ : push_string_check_fn(dest, src, dest_len))
+
+int main(int argc, char **argv) {
+ char outbuf[1024];
+ char *p = outbuf;
+ const char *foo = "bar";
+ p += 31 + push_string_check(p + 31, foo, sizeof(outbuf) - (p + 31 - outbuf));
+ return 0;
}''', 'HAVE_COMPILER_WILL_OPTIMIZE_OUT_FNS',
- msg="Checking if the compiler will optimize out functions")
+ addmain=False,
+ add_headers=False,
+ msg="Checking if the compiler will optimize out functions")
# Check if the compiler supports the LL suffix on long long integers
# AIX needs this