Test both the scalar and list contexts.
[p5sagit/p5-mst-13.2.git] / perl.c
diff --git a/perl.c b/perl.c
index 7d77f44..ff851b4 100644 (file)
--- a/perl.c
+++ b/perl.c
@@ -64,8 +64,12 @@ static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
            PERL_SET_INTERP(my_perl);           \
            INIT_THREADS;                       \
            ALLOC_THREAD_KEY;                   \
+           PERL_SET_THX(my_perl);              \
+           OP_REFCNT_INIT;                     \
+       }                                       \
+       else {                                  \
+           PERL_SET_THX(my_perl);              \
        }                                       \
-       PERL_SET_THX(my_perl);                  \
     } STMT_END
 #  else
 #  define INIT_TLS_AND_INTERP \
@@ -272,6 +276,7 @@ perl_construct(pTHXx)
 
     PL_fdpid = newAV();                        /* for remembering popen pids by fd */
     PL_modglobal = newHV();            /* pointers to per-interpreter module globals */
+    PL_errors = newSVpvn("",0);
 
     ENTER;
 }
@@ -591,6 +596,10 @@ perl_destruct(pTHXx)
     if (!specialWARN(PL_compiling.cop_warnings))
        SvREFCNT_dec(PL_compiling.cop_warnings);
     PL_compiling.cop_warnings = Nullsv;
+#ifndef USE_ITHREADS
+    SvREFCNT_dec(CopFILEGV(&PL_compiling));
+    CopFILEGV_set(&PL_compiling, Nullgv);
+#endif
 
     /* Prepare to destruct main symbol table.  */
 
@@ -675,10 +684,15 @@ perl_destruct(pTHXx)
     SvREFCNT(&PL_sv_yes) = 0;
     sv_clear(&PL_sv_yes);
     SvANY(&PL_sv_yes) = NULL;
+    SvFLAGS(&PL_sv_yes) = 0;
 
     SvREFCNT(&PL_sv_no) = 0;
     sv_clear(&PL_sv_no);
     SvANY(&PL_sv_no) = NULL;
+    SvFLAGS(&PL_sv_no) = 0;
+
+    SvREFCNT(&PL_sv_undef) = 0;
+    SvREADONLY_off(&PL_sv_undef);
 
     if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
        Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
@@ -751,7 +765,13 @@ perl_free(pTHXx)
 #if defined(PERL_OBJECT)
     PerlMem_free(this);
 #else
+#  if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
+    void *host = w32_internal_host;
     PerlMem_free(aTHXx);
+    win32_delete_internal_host(host);
+#  else
+    PerlMem_free(aTHXx);
+#  endif
 #endif
 }
 
@@ -971,7 +991,7 @@ S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
                char *p;
                STRLEN len = strlen(s);
                p = savepvn(s, len);
-               incpush(p, TRUE);
+               incpush(p, TRUE, TRUE);
                sv_catpvn(sv, "-I", 2);
                sv_catpvn(sv, p, len);
                sv_catpvn(sv, " ", 1);
@@ -1632,7 +1652,7 @@ Perl_call_sv(pTHX_ SV *sv, I32 flags)
            SAVETMPS;
            
            push_return(PL_op->op_next);
-           PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
+           PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
            PUSHEVAL(cx, 0, 0);
            PL_eval_root = PL_op;             /* Only needed so that goto works right. */
            
@@ -1964,6 +1984,7 @@ Perl_moreswitches(pTHX_ char *s)
     case '0':
     {
        dTHR;
+       numlen = 0;                     /* disallow underscores */
        rschar = (U32)scan_oct(s, 4, &numlen);
        SvREFCNT_dec(PL_nrs);
        if (rschar & ~((U8)~0))
@@ -2062,7 +2083,7 @@ Perl_moreswitches(pTHX_ char *s)
                    p++;
            } while (*p && *p != '-');
            e = savepvn(s, e-s);
-           incpush(e, TRUE);
+           incpush(e, TRUE, TRUE);
            Safefree(e);
            s = p;
            if (*s == '-')
@@ -2079,6 +2100,7 @@ Perl_moreswitches(pTHX_ char *s)
        if (isDIGIT(*s)) {
            PL_ors = savepv("\n");
            PL_orslen = 1;
+           numlen = 0;                 /* disallow underscores */
            *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
            s += numlen;
        }
@@ -2116,6 +2138,9 @@ Perl_moreswitches(pTHX_ char *s)
                    sv_catpv( sv, " ()");
                }
            } else {
+                if (s == start)
+                    Perl_croak(aTHX_ "Module name required with -%c option",
+                              s[-1]);
                sv_catpvn(sv, start, s-start);
                sv_catpv(sv, " split(/,/,q{");
                sv_catpv(sv, ++s);
@@ -2220,12 +2245,12 @@ Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
        return s;
     case 'W':
        PL_dowarn = G_WARN_ALL_ON|G_WARN_ON; 
-       PL_compiling.cop_warnings = WARN_ALL ;
+       PL_compiling.cop_warnings = pWARN_ALL ;
        s++;
        return s;
     case 'X':
        PL_dowarn = G_WARN_ALL_OFF; 
-       PL_compiling.cop_warnings = WARN_NONE ;
+       PL_compiling.cop_warnings = pWARN_NONE ;
        s++;
        return s;
     case '*':
@@ -2406,6 +2431,7 @@ S_init_main_stash(pTHX)
     CopSTASH_set(&PL_compiling, PL_defstash);
     PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
     PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
+    PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
     /* We must init $/ before switches are processed. */
     sv_setpvn(get_sv("/", TRUE), "\n", 1);
 }
@@ -2589,72 +2615,85 @@ S_fd_on_nosuid_fs(pTHX_ int fd)
  * an irrelevant filesystem while trying to reach the right one.
  */
 
-#   ifdef HAS_FSTATVFS
+#undef FD_ON_NOSUID_CHECK_OKAY  /* found the syscalls to do the check? */
+
+#   if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
+        defined(HAS_FSTATVFS)
+#   define FD_ON_NOSUID_CHECK_OKAY
     struct statvfs stfs;
+
     check_okay = fstatvfs(fd, &stfs) == 0;
     on_nosuid  = check_okay && (stfs.f_flag  & ST_NOSUID);
-#   else
-#       ifdef PERL_MOUNT_NOSUID
-#           if defined(HAS_FSTATFS) && \
-              defined(HAS_STRUCT_STATFS) && \
-              defined(HAS_STRUCT_STATFS_F_FLAGS)
+#   endif /* fstatvfs */
+#   if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
+        defined(PERL_MOUNT_NOSUID)     && \
+        defined(HAS_FSTATFS)           && \
+        defined(HAS_STRUCT_STATFS)     && \
+        defined(HAS_STRUCT_STATFS_F_FLAGS)
+#   define FD_ON_NOSUID_CHECK_OKAY
     struct statfs  stfs;
+
     check_okay = fstatfs(fd, &stfs)  == 0;
     on_nosuid  = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
-#           else
-#               if defined(HAS_FSTAT) && \
-                  defined(HAS_USTAT) && \
-                  defined(HAS_GETMNT) && \
-                  defined(HAS_STRUCT_FS_DATA) && \
-                  defined(NOSTAT_ONE)
+#   endif /* fstatfs */
+
+#   if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
+        defined(PERL_MOUNT_NOSUID)     && \
+        defined(HAS_FSTAT)             && \
+        defined(HAS_USTAT)             && \
+        defined(HAS_GETMNT)            && \
+        defined(HAS_STRUCT_FS_DATA)    && \
+        defined(NOSTAT_ONE)
+#   define FD_ON_NOSUID_CHECK_OKAY
     struct stat fdst;
+
     if (fstat(fd, &fdst) == 0) {
-       struct ustat us;
-       if (ustat(fdst.st_dev, &us) == 0) {
-           struct fs_data fsd;
-           /* NOSTAT_ONE here because we're not examining fields which
-            * vary between that case and STAT_ONE. */
+        struct ustat us;
+        if (ustat(fdst.st_dev, &us) == 0) {
+            struct fs_data fsd;
+            /* NOSTAT_ONE here because we're not examining fields which
+             * vary between that case and STAT_ONE. */
             if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
-               size_t cmplen = sizeof(us.f_fname);
-               if (sizeof(fsd.fd_req.path) < cmplen)
-                   cmplen = sizeof(fsd.fd_req.path);
-               if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
-                   fdst.st_dev == fsd.fd_req.dev) {
-                       check_okay = 1;
-                       on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
-                   }
-               }
-           }
-       }
-    }
-#               endif /* fstat+ustat+getmnt */
-#           endif /* fstatfs */
-#       else
-#           if defined(HAS_GETMNTENT) && \
-              defined(HAS_HASMNTOPT) && \
-              defined(MNTOPT_NOSUID)
-    FILE               *mtab = fopen("/etc/mtab", "r");
-    struct mntent      *entry;
-    struct stat                stb, fsb;
+                size_t cmplen = sizeof(us.f_fname);
+                if (sizeof(fsd.fd_req.path) < cmplen)
+                    cmplen = sizeof(fsd.fd_req.path);
+                if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
+                    fdst.st_dev == fsd.fd_req.dev) {
+                        check_okay = 1;
+                        on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
+                    }
+                }
+            }
+        }
+    }
+#   endif /* fstat+ustat+getmnt */
+
+#   if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
+        defined(HAS_GETMNTENT)         && \
+        defined(HAS_HASMNTOPT)         && \
+        defined(MNTOPT_NOSUID)
+#   define FD_ON_NOSUID_CHECK_OKAY
+    FILE                *mtab = fopen("/etc/mtab", "r");
+    struct mntent       *entry;
+    struct stat         stb, fsb;
 
     if (mtab && (fstat(fd, &stb) == 0)) {
-       while (entry = getmntent(mtab)) {
-           if (stat(entry->mnt_dir, &fsb) == 0
-               && fsb.st_dev == stb.st_dev)
-           {
-               /* found the filesystem */
-               check_okay = 1;
-               if (hasmntopt(entry, MNTOPT_NOSUID))
-                   on_nosuid = 1;
-               break;
-           } /* A single fs may well fail its stat(). */
-       }
+        while (entry = getmntent(mtab)) {
+            if (stat(entry->mnt_dir, &fsb) == 0
+                && fsb.st_dev == stb.st_dev)
+            {
+                /* found the filesystem */
+                check_okay = 1;
+                if (hasmntopt(entry, MNTOPT_NOSUID))
+                    on_nosuid = 1;
+                break;
+            } /* A single fs may well fail its stat(). */
+        }
     }
     if (mtab)
-       fclose(mtab);
-#           endif /* getmntent+hasmntopt */
-#       endif /* PERL_MOUNT_NOSUID: fstatfs or fstat+ustat+statfs */
-#   endif /* statvfs */
+        fclose(mtab);
+#   endif /* getmntent+hasmntopt */
 
     if (!check_okay) 
        Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
@@ -3212,9 +3251,9 @@ S_init_perllib(pTHX)
 #ifndef VMS
        s = PerlEnv_getenv("PERL5LIB");
        if (s)
-           incpush(s, TRUE);
+           incpush(s, TRUE, TRUE);
        else
-           incpush(PerlEnv_getenv("PERLLIB"), FALSE);
+           incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
 #else /* VMS */
        /* Treat PERL5?LIB as a possible search list logical name -- the
         * "natural" VMS idiom for a Unix path string.  We allow each
@@ -3223,9 +3262,9 @@ S_init_perllib(pTHX)
        char buf[256];
        int idx = 0;
        if (my_trnlnm("PERL5LIB",buf,0))
-           do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
+           do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
        else
-           while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
+           while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
 #endif /* VMS */
     }
 
@@ -3233,63 +3272,67 @@ S_init_perllib(pTHX)
     ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
 */
 #ifdef APPLLIB_EXP
-    incpush(APPLLIB_EXP, TRUE);
+    incpush(APPLLIB_EXP, TRUE, TRUE);
 #endif
 
 #ifdef ARCHLIB_EXP
-    incpush(ARCHLIB_EXP, FALSE);
+    incpush(ARCHLIB_EXP, FALSE, FALSE);
 #endif
 #ifndef PRIVLIB_EXP
 #  define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
 #endif
 #if defined(WIN32) 
-    incpush(PRIVLIB_EXP, TRUE);
+    incpush(PRIVLIB_EXP, TRUE, FALSE);
 #else
-    incpush(PRIVLIB_EXP, FALSE);
+    incpush(PRIVLIB_EXP, FALSE, FALSE);
 #endif
 
 #ifdef SITEARCH_EXP
     /* sitearch is always relative to sitelib on Windows for
      * DLL-based path intuition to work correctly */
 #  if !defined(WIN32)
-    incpush(SITEARCH_EXP, FALSE);
+    incpush(SITEARCH_EXP, FALSE, FALSE);
 #  endif
 #endif
 
 #ifdef SITELIB_EXP
 #  if defined(WIN32)
-    incpush(SITELIB_EXP, TRUE);                /* this picks up sitearch as well */
+    incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
 #  else
-    incpush(SITELIB_EXP, FALSE);
+    incpush(SITELIB_EXP, FALSE, FALSE);
 #  endif
 #endif
 
 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
-    incpush(SITELIB_STEM, TRUE);
+    incpush(SITELIB_STEM, FALSE, TRUE);
 #endif
 
 #ifdef PERL_VENDORARCH_EXP
-    /* vendorarch is always relative to sitelib on Windows for
+    /* vendorarch is always relative to vendorlib on Windows for
      * DLL-based path intuition to work correctly */
 #  if !defined(WIN32)
-    incpush(PERL_VENDORARCH_EXP, FALSE);
+    incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
 #  endif
 #endif
 
 #ifdef PERL_VENDORLIB_EXP
 #  if defined(WIN32)
-    incpush(PERL_VENDORLIB_EXP, TRUE); /* this picks up vendorarch as well */
+    incpush(PERL_VENDORLIB_EXP, TRUE, FALSE);  /* this picks up vendorarch as well */
 #  else
-    incpush(PERL_VENDORLIB_EXP, FALSE);
+    incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
 #  endif
 #endif
 
 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
-    incpush(PERL_VENDORLIB_STEM, TRUE);
+    incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
+#endif
+
+#ifdef PERL_OTHERLIBDIRS
+    incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
 #endif
 
     if (!PL_tainting)
-       incpush(".", FALSE);
+       incpush(".", FALSE, FALSE);
 }
 
 #if defined(DOSISH)
@@ -3306,14 +3349,14 @@ S_init_perllib(pTHX)
 #endif 
 
 STATIC void
-S_incpush(pTHX_ char *p, int addsubdirs)
+S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
 {
     SV *subdir = Nullsv;
 
     if (!p || !*p)
        return;
 
-    if (addsubdirs) {
+    if (addsubdirs || addoldvers) {
        subdir = sv_newmortal();
     }
 
@@ -3343,7 +3386,7 @@ S_incpush(pTHX_ char *p, int addsubdirs)
         * BEFORE pushing libdir onto @INC we may first push version- and
         * archname-specific sub-directories.
         */
-       if (addsubdirs) {
+       if (addsubdirs || addoldvers) {
 #ifdef PERL_INC_VERSION_LIST
            /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
            const char *incverlist[] = { PERL_INC_VERSION_LIST };
@@ -3364,35 +3407,40 @@ S_incpush(pTHX_ char *p, int addsubdirs)
                              "Failed to unixify @INC element \"%s\"\n",
                              SvPV(libdir,len));
 #endif
-           /* .../version/archname if -d .../version/archname */
-           Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT"/%s", libdir,
-                          (int)PERL_REVISION, (int)PERL_VERSION,
-                          (int)PERL_SUBVERSION, ARCHNAME);
-           if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
-                 S_ISDIR(tmpstatbuf.st_mode))
-               av_push(GvAVn(PL_incgv), newSVsv(subdir));
-
-           /* .../version if -d .../version */
-           Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT, libdir,
-                          (int)PERL_REVISION, (int)PERL_VERSION,
-                          (int)PERL_SUBVERSION);
-           if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
-                 S_ISDIR(tmpstatbuf.st_mode))
-               av_push(GvAVn(PL_incgv), newSVsv(subdir));
-
-           /* .../archname if -d .../archname */
-           Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, ARCHNAME);
-           if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
-                 S_ISDIR(tmpstatbuf.st_mode))
-               av_push(GvAVn(PL_incgv), newSVsv(subdir));
+           if (addsubdirs) {
+               /* .../version/archname if -d .../version/archname */
+               Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT"/%s", 
+                               libdir,
+                              (int)PERL_REVISION, (int)PERL_VERSION,
+                              (int)PERL_SUBVERSION, ARCHNAME);
+               if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
+                     S_ISDIR(tmpstatbuf.st_mode))
+                   av_push(GvAVn(PL_incgv), newSVsv(subdir));
 
-#ifdef PERL_INC_VERSION_LIST
-           for (incver = incverlist; *incver; incver++) {
-               /* .../xxx if -d .../xxx */
-               Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, *incver);
+               /* .../version if -d .../version */
+               Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT, libdir,
+                              (int)PERL_REVISION, (int)PERL_VERSION,
+                              (int)PERL_SUBVERSION);
                if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
                      S_ISDIR(tmpstatbuf.st_mode))
                    av_push(GvAVn(PL_incgv), newSVsv(subdir));
+
+               /* .../archname if -d .../archname */
+               Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, ARCHNAME);
+               if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
+                     S_ISDIR(tmpstatbuf.st_mode))
+                   av_push(GvAVn(PL_incgv), newSVsv(subdir));
+           }
+
+#ifdef PERL_INC_VERSION_LIST
+           if (addoldvers) {
+               for (incver = incverlist; *incver; incver++) {
+                   /* .../xxx if -d .../xxx */
+                   Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, *incver);
+                   if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
+                         S_ISDIR(tmpstatbuf.st_mode))
+                       av_push(GvAVn(PL_incgv), newSVsv(subdir));
+               }
            }
 #endif
        }