Remove sources of "unreferenced label" warning on Win32

[perl5.git] / pp_sys.c

diff --git a/pp_sys.c b/pp_sys.c
index b371469..5f00bbe 100644 (file)
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -534,9 +534,9 @@ Perl_tied_method(pTHX_ SV *methname, SV **sp, SV *const sv,
     PERL_ARGS_ASSERT_TIED_METHOD;
 
     /* Ensure that our flag bits do not overlap.  */
-    assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
-    assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
-    assert((TIED_METHOD_SAY & G_WANT) == 0);
+    STATIC_ASSERT_STMT((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
+    STATIC_ASSERT_STMT((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
+    STATIC_ASSERT_STMT((TIED_METHOD_SAY & G_WANT) == 0);
 
     PUTBACK; /* sp is at *foot* of args, so this pops args from old stack */
     PUSHSTACKi(PERLSI_MAGIC);
@@ -743,6 +743,22 @@ PP(pp_fileno)
        return tied_method0(SV_CONST(FILENO), SP, MUTABLE_SV(io), mg);
     }
 
+    if (io && IoDIRP(io)) {
+#if defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)
+        PUSHi(my_dirfd(IoDIRP(io)));
+        RETURN;
+#elif defined(ENOTSUP)
+        errno = ENOTSUP;        /* Operation not supported */
+        RETPUSHUNDEF;
+#elif defined(EOPNOTSUPP)
+        errno = EOPNOTSUPP;     /* Operation not supported on socket */
+        RETPUSHUNDEF;
+#else
+        errno = EINVAL;         /* Invalid argument */
+        RETPUSHUNDEF;
+#endif
+    }
+
     if (!io || !(fp = IoIFP(io))) {
        /* Can't do this because people seem to do things like
           defined(fileno($foo)) to check whether $foo is a valid fh.
@@ -1231,7 +1247,7 @@ PP(pp_sselect)
     }
 
     PUSHi(nfound);
-    if (GIMME == G_ARRAY && tbuf) {
+    if (GIMME_V == G_ARRAY && tbuf) {
        value = (NV)(timebuf.tv_sec) +
                (NV)(timebuf.tv_usec) / 1000000.0;
        mPUSHn(value);
@@ -2115,14 +2131,18 @@ PP(pp_eof)
     if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) {  /* eof() */
        if (io && !IoIFP(io)) {
            if ((IoFLAGS(io) & IOf_START) && av_tindex(GvAVn(gv)) < 0) {
+               SV ** svp;
                IoLINES(io) = 0;
                IoFLAGS(io) &= ~IOf_START;
                do_open6(gv, "-", 1, NULL, NULL, 0);
-               if (GvSV(gv))
-                   sv_setpvs(GvSV(gv), "-");
+               svp = &GvSV(gv);
+               if (*svp) {
+                   SV * sv = *svp;
+                   sv_setpvs(sv, "-");
+                   SvSETMAGIC(sv);
+               }
                else
-                   GvSV(gv) = newSVpvs("-");
-               SvSETMAGIC(GvSV(gv));
+                   *svp = newSVpvs("-");
            }
            else if (!nextargv(gv, FALSE))
                RETPUSHYES;
@@ -3486,12 +3506,12 @@ PP(pp_fttext)
 #endif
 
     assert(len);
-    if (! is_ascii_string((U8 *) s, len)) {
+    if (! is_invariant_string((U8 *) s, len)) {
         const U8 *ep;
 
-        /* Here contains a non-ASCII.  See if the entire string is UTF-8.  But
-         * the buffer may end in a partial character, so consider it UTF-8 if
-         * the first non-UTF8 char is an ending partial */
+        /* Here contains a variant under UTF-8 .  See if the entire string is
+         * UTF-8.  But the buffer may end in a partial character, so consider
+         * it UTF-8 if the first non-UTF8 char is an ending partial */
         if (is_utf8_string_loc((U8 *) s, len, &ep)
             || ep + UTF8SKIP(ep)  > (U8 *) (s + len))
         {
@@ -3613,11 +3633,13 @@ PP(pp_chdir)
 #endif
     RETURN;
 
+#ifdef HAS_FCHDIR
  nuts:
     report_evil_fh(gv);
     SETERRNO(EBADF,RMS_IFI);
     PUSHi(0);
     RETURN;
+#endif
 }
 
 
@@ -3943,7 +3965,7 @@ PP(pp_readdir)
     dSP;
 
     SV *sv;
-    const I32 gimme = GIMME;
+    const I32 gimme = GIMME_V;
     GV * const gv = MUTABLE_GV(POPs);
     const Direntry_t *dp;
     IO * const io = GvIOn(gv);
@@ -3977,7 +3999,7 @@ PP(pp_readdir)
 nope:
     if (!errno)
        SETERRNO(EBADF,RMS_ISI);
-    if (GIMME == G_ARRAY)
+    if (gimme == G_ARRAY)
        RETURN;
     else
        RETPUSHUNDEF;
@@ -4532,7 +4554,7 @@ PP(pp_tms)
     (void)PerlProc_times(&timesbuf);
 
     mPUSHn(((NV)timesbuf.tms_utime)/(NV)PL_clocktick);
-    if (GIMME == G_ARRAY) {
+    if (GIMME_V == G_ARRAY) {
        mPUSHn(((NV)timesbuf.tms_stime)/(NV)PL_clocktick);
        mPUSHn(((NV)timesbuf.tms_cutime)/(NV)PL_clocktick);
        mPUSHn(((NV)timesbuf.tms_cstime)/(NV)PL_clocktick);
@@ -4543,7 +4565,7 @@ PP(pp_tms)
     dSP;
     mPUSHn(0.0);
     EXTEND(SP, 4);
-    if (GIMME == G_ARRAY) {
+    if (GIMME_V == G_ARRAY) {
         mPUSHn(0.0);
         mPUSHn(0.0);
         mPUSHn(0.0);
@@ -4587,11 +4609,16 @@ PP(pp_gmtime)
     }
     else {
        NV input = Perl_floor(POPn);
+       const bool pl_isnan = Perl_isnan(input);
        when = (Time64_T)input;
-       if (when != input) {
+       if (UNLIKELY(pl_isnan || when != input)) {
            /* diag_listed_as: gmtime(%f) too large */
            Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
                           "%s(%.0" NVff ") too large", opname, input);
+           if (pl_isnan) {
+               err = NULL;
+               goto failed;
+           }
        }
     }
 
@@ -4617,24 +4644,26 @@ PP(pp_gmtime)
     if (err == NULL) {
        /* diag_listed_as: gmtime(%f) failed */
        /* XXX %lld broken for quads */
+      failed:
        Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
                       "%s(%.0" NVff ") failed", opname, when);
     }
 
-    if (GIMME != G_ARRAY) {    /* scalar context */
+    if (GIMME_V != G_ARRAY) {  /* scalar context */
         EXTEND(SP, 1);
-        EXTEND_MORTAL(1);
        if (err == NULL)
            RETPUSHUNDEF;
        else {
-           mPUSHs(Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %"IVdf,
+           dTARGET;
+           PUSHs(TARG);
+           Perl_sv_setpvf_mg(aTHX_ TARG, "%s %s %2d %02d:%02d:%02d %"IVdf,
                                 dayname[tmbuf.tm_wday],
                                 monname[tmbuf.tm_mon],
                                 tmbuf.tm_mday,
                                 tmbuf.tm_hour,
                                 tmbuf.tm_min,
                                 tmbuf.tm_sec,
-                                (IV)tmbuf.tm_year + 1900));
+                                (IV)tmbuf.tm_year + 1900);
         }
     }
     else {                     /* list context */
@@ -4848,7 +4877,7 @@ PP(pp_ghostent)
        }
 #endif
 
-    if (GIMME != G_ARRAY) {
+    if (GIMME_V != G_ARRAY) {
        PUSHs(sv = sv_newmortal());
        if (hent) {
            if (which == OP_GHBYNAME) {
@@ -4935,7 +4964,7 @@ PP(pp_gnetent)
 #endif
 
     EXTEND(SP, 4);
-    if (GIMME != G_ARRAY) {
+    if (GIMME_V != G_ARRAY) {
        PUSHs(sv = sv_newmortal());
        if (nent) {
            if (which == OP_GNBYNAME)
@@ -4999,7 +5028,7 @@ PP(pp_gprotoent)
 #endif
 
     EXTEND(SP, 3);
-    if (GIMME != G_ARRAY) {
+    if (GIMME_V != G_ARRAY) {
        PUSHs(sv = sv_newmortal());
        if (pent) {
            if (which == OP_GPBYNAME)
@@ -5065,7 +5094,7 @@ PP(pp_gservent)
 #endif
 
     EXTEND(SP, 4);
-    if (GIMME != G_ARRAY) {
+    if (GIMME_V != G_ARRAY) {
        PUSHs(sv = sv_newmortal());
        if (sent) {
            if (which == OP_GSBYNAME) {
@@ -5301,7 +5330,7 @@ PP(pp_gpwent)
     }
 
     EXTEND(SP, 10);
-    if (GIMME != G_ARRAY) {
+    if (GIMME_V != G_ARRAY) {
        PUSHs(sv = sv_newmortal());
        if (pwent) {
            if (which == OP_GPWNAM)
@@ -5443,7 +5472,7 @@ PP(pp_ggrent)
 #endif
 
     EXTEND(SP, 4);
-    if (GIMME != G_ARRAY) {
+    if (GIMME_V != G_ARRAY) {
        SV * const sv = sv_newmortal();
 
        PUSHs(sv);