void
Perl_set_caret_X(pTHX) {
- dVAR;
GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
if (tmpgv) {
SV *const caret_x = GvSV(tmpgv);
}
# elif defined(HAS_PROCSELFEXE)
char buf[MAXPATHLEN];
- int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
+ SSize_t len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
+ /* NOTE: if the length returned by readlink() is sizeof(buf) - 1,
+ * it is impossible to know whether the result was truncated. */
+
+ if (len != -1) {
+ buf[len] = '\0';
+ }
/* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
includes a spurious NUL which will cause $^X to fail in system