*
* Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
* 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
- * 2013, 2014, 2015, 2016 by Larry Wall and others
+ * 2013, 2014, 2015, 2016, 2017 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
* and destroy a perl interpreter, plus the functions used by XS code to
* call back into perl. Note that it does not contain the actual main()
* function of the interpreter; that can be found in perlmain.c
+ *
+ * Note that at build time this file is also linked to as perlmini.c,
+ * and perlmini.o is then built with PERL_IS_MINIPERL defined, which is
+ * then used to create the miniperl executable, rather than perl.o.
*/
#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
OP_REFCNT_INIT;
OP_CHECK_MUTEX_INIT;
HINTS_REFCNT_INIT;
+ LOCALE_INIT;
MUTEX_INIT(&PL_dollarzero_mutex);
MUTEX_INIT(&PL_my_ctx_mutex);
# endif
=cut
*/
+static void
+S_fixup_platform_bugs(void)
+{
+#if defined(__GLIBC__) && IVSIZE == 8 \
+ && ( __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 8))
+ {
+ IV l = 3;
+ IV r = -10;
+ /* Cannot do this check with inlined IV constants since
+ * that seems to work correctly even with the buggy glibc. */
+ if (l % r == -3) {
+ dTHX;
+ /* Yikes, we have the bug.
+ * Patch in the workaround version. */
+ PL_ppaddr[OP_I_MODULO] = &Perl_pp_i_modulo_glibc_bugfix;
+ }
+ }
+#endif
+}
+
void
perl_construct(pTHXx)
{
init_ids();
+ S_fixup_platform_bugs();
+
JMPENV_BOOTSTRAP;
STATUS_ALL_SUCCESS;
PL_fdpid = newAV(); /* for remembering popen pids by fd */
PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
PL_errors = newSVpvs("");
- sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
- sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
- sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
+ SvPVCLEAR(PERL_DEBUG_PAD(0)); /* For regex debugging. */
+ SvPVCLEAR(PERL_DEBUG_PAD(1)); /* ext/re needs these */
+ SvPVCLEAR(PERL_DEBUG_PAD(2)); /* even without DEBUGGING. */
#ifdef USE_ITHREADS
/* First entry is a list of empty elements. It needs to be initialised
else all hell breaks loose in S_find_uninit_var(). */
#ifdef USE_REENTRANT_API
Perl_reentrant_init(aTHX);
#endif
-#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
- /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
- * This MUST be done before any hash stores or fetches take place.
- * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
- * yourself, it is your responsibility to provide a good random seed!
- * You can also define PERL_HASH_SEED in compile time, see hv.h.
- *
- * XXX: fix this comment */
if (PL_hash_seed_set == FALSE) {
+ /* Initialize the hash seed and state at startup. This must be
+ * done very early, before ANY hashes are constructed, and once
+ * setup is fixed for the lifetime of the process.
+ *
+ * If you decide to disable the seeding process you should choose
+ * a suitable seed yourself and define PERL_HASH_SEED to a well chosen
+ * string. See hv_func.h for details.
+ */
+#if defined(USE_HASH_SEED)
+ /* get the hash seed from the environment or from an RNG */
Perl_get_hash_seed(aTHX_ PL_hash_seed);
+#else
+ /* they want a hard coded seed, check that it is long enough */
+ assert( strlen(PERL_HASH_SEED) >= PERL_HASH_SEED_BYTES );
+#endif
+
+ /* now we use the chosen seed to initialize the state -
+ * in some configurations this may be a relatively speaking
+ * expensive operation, but we only have to do it once at startup */
+ PERL_HASH_SEED_STATE(PERL_HASH_SEED,PL_hash_state);
+
+#ifdef PERL_USE_SINGLE_CHAR_HASH_CACHE
+ /* we can build a special cache for 0/1 byte keys, if people choose
+ * I suspect most of the time it is not worth it */
+ {
+ char str[2]="\0";
+ int i;
+ for (i=0;i<256;i++) {
+ str[0]= i;
+ PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[i],str,1);
+ }
+ PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[256],str,0);
+ }
+#endif
+ /* at this point we have initialezed the hash function, and we can start
+ * constructing hashes */
PL_hash_seed_set= TRUE;
}
-#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
-
/* Note that strtab is a rather special HV. Assumptions are made
about not iterating on it, and not adding tie magic to it.
It is properly deallocated in perl_destruct() */
PL_strtab = newHV();
+ /* SHAREKEYS tells us that the hash has its keys shared with PL_strtab,
+ * which is not the case with PL_strtab itself */
HvSHAREKEYS_off(PL_strtab); /* mandatory */
- hv_ksplit(PL_strtab, 512);
+ hv_ksplit(PL_strtab, 1 << 11);
Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
+ PL_Assigned_invlist = _new_invlist_C_array(Assigned_invlist);
+#ifdef USE_THREAD_SAFE_LOCALE
+ PL_C_locale_obj = newlocale(LC_ALL_MASK, "C", NULL);
+#endif
ENTER;
}
assert(PL_scopestack_ix == 0);
/* Need to flush since END blocks can produce output */
+ /* flush stdout separately, since we can identify it */
+#ifdef USE_PERLIO
+ {
+ PerlIO *stdo = PerlIO_stdout();
+ if (*stdo && PerlIO_flush(stdo)) {
+ PerlIO_restore_errno(stdo);
+ if (errno)
+ PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
+ Strerror(errno));
+ if (!STATUS_UNIX)
+ STATUS_ALL_FAILURE;
+ }
+ }
+#endif
my_fflush_all();
#ifdef PERL_TRACE_OPS
- /* If we traced all Perl OP usage, report and clean up */
+ /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
+ {
+ const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
+ UV uv;
+
+ if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
+ || !(uv > 0))
+ goto no_trace_out;
+ }
PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
for (i = 0; i <= OP_max; ++i) {
- PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
- PL_op_exec_cnt[i] = 0;
+ if (PL_op_exec_cnt[i])
+ PerlIO_printf(Perl_debug_log, " %s: %" UVuf "\n", PL_op_name[i], PL_op_exec_cnt[i]);
}
/* Utility slot for easily doing little tracing experiments in the runloop: */
if (PL_op_exec_cnt[OP_max+1] != 0)
- PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
+ PerlIO_printf(Perl_debug_log, " SPECIAL: %" UVuf "\n", PL_op_exec_cnt[OP_max+1]);
PerlIO_printf(Perl_debug_log, "\n");
+ no_trace_out:
#endif
PL_LB_invlist = NULL;
PL_SB_invlist = NULL;
PL_WB_invlist = NULL;
+ PL_Assigned_invlist = NULL;
if (!specialWARN(PL_compiling.cop_warnings))
PerlMemShared_free(PL_compiling.cop_warnings);
hv = PL_defstash;
/* break ref loop *:: <=> %:: */
- (void)hv_delete(hv, "main::", 6, G_DISCARD);
+ (void)hv_deletes(hv, "main::", G_DISCARD);
PL_defstash = 0;
SvREFCNT_dec(hv);
SvREFCNT_dec(PL_curstname);
SvANY(&PL_sv_no) = NULL;
SvFLAGS(&PL_sv_no) = 0;
+ SvREFCNT(&PL_sv_zero) = 0;
+ sv_clear(&PL_sv_zero);
+ SvANY(&PL_sv_zero) = NULL;
+ SvFLAGS(&PL_sv_zero) = 0;
+
{
int i;
for (i=0; i<=2; i++) {
PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
" flags=0x%"UVxf
" refcnt=%"UVuf pTHX__FORMAT "\n"
- "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
- "serial %"UVuf"\n",
+ "\tallocated at %s:%d %s %s (parent 0x%" UVxf ");"
+ "serial %" UVuf "\n",
(void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
pTHX__VALUE,
sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
#ifndef MULTIPLICITY
PERL_UNUSED_ARG(my_perl);
#endif
-#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
+#if (defined(USE_HASH_SEED) || defined(USE_HASH_SEED_DEBUG)) && !defined(NO_PERL_HASH_SEED_DEBUG)
{
const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
PerlIO_printf(Perl_debug_log, "\n");
}
}
-#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
+#endif /* #if (defined(USE_HASH_SEED) ... */
#ifdef __amigaos4__
{
* the original argv[0]. (See below for 'contiguous', though.)
* --jhi */
const char *s = NULL;
- int i;
const UV mask = ~(UV)(PTRSIZE-1);
/* Do the mask check only if the args seem like aligned. */
const UV aligned =
* like the argv[] interleaved with some other data, we are
* fine. (Did I just evoke Murphy's Law?) --jhi */
if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
+ int i;
while (*s) s++;
for (i = 1; i < PL_origargc; i++) {
if ((PL_origargv[i] == s + 1
INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
)
{
+ int i;
#ifndef OS2 /* ENVIRON is read by the kernel too. */
s = PL_origenviron[0];
while (*s) s++;
# ifdef PERL_MEM_LOG_NOIMPL
" PERL_MEM_LOG_NOIMPL"
# endif
+# ifdef PERL_OP_PARENT
+ " PERL_OP_PARENT"
+# endif
# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
" PERL_PERTURB_KEYS_DETERMINISTIC"
# endif
# ifdef PERL_USE_SAFE_PUTENV
" PERL_USE_SAFE_PUTENV"
# endif
+# ifdef SILENT_NO_TAINT_SUPPORT
+ " SILENT_NO_TAINT_SUPPORT"
+# endif
# ifdef UNLINK_ALL_VERSIONS
" UNLINK_ALL_VERSIONS"
# endif
# ifdef USE_FAST_STDIO
" USE_FAST_STDIO"
# endif
-# ifdef USE_HASH_SEED_EXPLICIT
- " USE_HASH_SEED_EXPLICIT"
-# endif
# ifdef USE_LOCALE
" USE_LOCALE"
# endif
it should be reported immediately as a build failure. */
(void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
Perl_newSVpvf(aTHX_
- "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
+ "BEGIN { my $f = q%c%s%" SVf "/buildcustomize.pl%c; "
"do {local $!; -f $f }"
" and do $f || die $@ || qq '$f: $!' }",
0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
/* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
* or explicitly in some platforms.
+ * PL_utf8locale is conditionally turned on by
* locale.c:Perl_init_i18nl10n() if the environment
* look like the user wants to use UTF-8. */
#if defined(__SYMBIAN32__)
SETERRNO(0,SS_NORMAL);
if (yyparse(GRAMPROG) || PL_parser->error_count) {
- if (PL_minus_c)
- Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
- else {
- Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
- PL_origfilename);
- }
+ abort_execution("", PL_origfilename);
}
CopLINE_set(PL_curcop, 0);
SET_CURSTASH(PL_defstash);
(void)POPMARK;
old_cxix = cxstack_ix;
create_eval_scope(NULL, flags|G_FAKINGEVAL);
- (void)INCMARK;
+ INCMARK;
JMPENV_PUSH(ret);
" M trace smart match resolution\n"
" B dump suBroutine definitions, including special Blocks like BEGIN\n",
" L trace some locale setting information--for Perl core development\n",
+ " i trace PerlIO layer processing\n",
NULL
};
UV uv = 0;
if (isALPHA(**s)) {
/* if adding extra options, remember to update DEBUG_MASK */
- static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
+ static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
for (; isWORDCHAR(**s); (*s)++) {
const char * const d = strchr(debopts,**s);
s--;
}
PL_rs = newSVpvs("");
- SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
- tmps = (U8*)SvPVX(PL_rs);
+ tmps = (U8*) SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
uvchr_to_utf8(tmps, rschar);
SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
SvUTF8_on(PL_rs);
PL_inplace = savepvn(start, s - start);
}
- if (*s) {
- ++s;
- if (*s == '-') /* Additional switches on #! line. */
- s++;
- }
return s;
case 'I': /* -I handled both here and in parse_body() */
forbid_setid('I', FALSE);
"\nThis is perl " STRINGIFY(PERL_REVISION)
", version " STRINGIFY(PERL_VERSION)
", subversion " STRINGIFY(PERL_SUBVERSION)
- " (%"SVf") built for " ARCHNAME, SVfARG(level)
+ " (%" SVf ") built for " ARCHNAME, SVfARG(level)
);
SvREFCNT_dec_NN(level);
}
#endif
PerlIO_printf(PIO_stdout,
- "\n\nCopyright 1987-2016, Larry Wall\n");
+ "\n\nCopyright 1987-2017, Larry Wall\n");
#ifdef MSDOS
PerlIO_printf(PIO_stdout,
"\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
because otherwise all we do is delete "main" from it as a consequence
of the SvREFCNT_dec, only to add it again with hv_name_set */
SvREFCNT_dec(GvHV(gv));
- hv_name_set(PL_defstash, "main", 4, 0);
+ hv_name_sets(PL_defstash, "main", 0);
GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
SvREADONLY_on(gv);
PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
/* if find_script() returns, it returns a malloc()-ed value */
scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
- if (strnEQ(scriptname, "/dev/fd/", 8)
+ if (strEQs(scriptname, "/dev/fd/")
&& isDIGIT(scriptname[8])
&& grok_atoUV(scriptname + 8, &uv, &s)
&& uv <= PERL_INT_MAX
if (!rsfp) {
/* PSz 16 Sep 03 Keep neat error message */
if (PL_e_script)
- Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
+ Perl_croak(aTHX_ "Can't open " BIT_BUCKET ": %s\n", Strerror(errno));
else
Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
CopFILE(PL_curcop), Strerror(errno));
if (*s++ == '-') {
while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
|| s2[-1] == '_') s2--;
- if (strnEQ(s2-4,"perl",4))
+ if (strEQs(s2-4,"perl"))
while ((s = moreswitches(s)))
;
}
PL_curstackinfo = new_stackinfo(REASONABLE(128),
REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
PL_curstackinfo->si_type = PERLSI_MAIN;
+#if defined DEBUGGING && !defined DEBUGGING_RE_ONLY
+ PL_curstackinfo->si_stack_hwm = 0;
+#endif
PL_curstack = PL_curstackinfo->si_stack;
PL_mainstack = PL_curstack; /* remember in case we switch stacks */
PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
PL_toptarget = newSV_type(SVt_PVIV);
- sv_setpvs(PL_toptarget, "");
+ SvPVCLEAR(PL_toptarget);
PL_bodytarget = newSV_type(SVt_PVIV);
- sv_setpvs(PL_bodytarget, "");
+ SvPVCLEAR(PL_bodytarget);
PL_formtarget = PL_bodytarget;
TAINT;
}
if (env) {
char *s, *old_var;
+ STRLEN nlen;
SV *sv;
+ HV *dups = newHV();
+
for (; *env; env++) {
old_var = *env;
if (!(s = strchr(old_var,'=')) || s == old_var)
continue;
+ nlen = s - old_var;
#if defined(MSDOS) && !defined(DJGPP)
*s = '\0';
(void)strupr(old_var);
*s = '=';
#endif
- sv = newSVpv(s+1, 0);
- (void)hv_store(hv, old_var, s - old_var, sv, 0);
+ if (hv_exists(hv, old_var, nlen)) {
+ const char *name = savepvn(old_var, nlen);
+
+ /* make sure we use the same value as getenv(), otherwise code that
+ uses getenv() (like setlocale()) might see a different value to %ENV
+ */
+ sv = newSVpv(PerlEnv_getenv(name), 0);
+
+ /* keep a count of the dups of this name so we can de-dup environ later */
+ if (hv_exists(dups, name, nlen))
+ ++SvIVX(*hv_fetch(dups, name, nlen, 0));
+ else
+ (void)hv_store(dups, name, nlen, newSViv(1), 0);
+
+ Safefree(name);
+ }
+ else {
+ sv = newSVpv(s+1, 0);
+ }
+ (void)hv_store(hv, old_var, nlen, sv, 0);
if (env_is_not_environ)
mg_set(sv);
}
+ if (HvKEYS(dups)) {
+ /* environ has some duplicate definitions, remove them */
+ HE *entry;
+ hv_iterinit(dups);
+ while ((entry = hv_iternext_flags(dups, 0))) {
+ STRLEN nlen;
+ const char *name = HePV(entry, nlen);
+ IV count = SvIV(HeVAL(entry));
+ IV i;
+ SV **valp = hv_fetch(hv, name, nlen, 0);
+
+ assert(valp);
+
+ /* try to remove any duplicate names, depending on the
+ * implementation used in my_setenv() the iteration might
+ * not be necessary, but let's be safe.
+ */
+ for (i = 0; i < count; ++i)
+ my_setenv(name, 0);
+
+ /* and set it back to the value we set $ENV{name} to */
+ my_setenv(name, SvPV_nolen(*valp));
+ }
+ }
+ SvREFCNT_dec_NN(dups);
}
#endif /* USE_ENVIRON_ARRAY */
#endif /* !PERL_MICRO */
#endif
#endif /* !PERL_IS_MINIPERL */
- if (!TAINTING_get)
- S_incpush(aTHX_ STR_WITH_LEN("."), 0);
+ if (!TAINTING_get) {
+#if !defined(PERL_IS_MINIPERL) && defined(DEFAULT_INC_EXCLUDES_DOT)
+ const char * const unsafe = PerlEnv_getenv("PERL_USE_UNSAFE_INC");
+ if (unsafe && strEQ(unsafe, "1"))
+#endif
+ S_incpush(aTHX_ STR_WITH_LEN("."), 0);
+ }
}
#if defined(DOSISH) || defined(__SYMBIAN32__)
# define PERLLIB_SEP ';'
#else
-# if defined(VMS)
-# define PERLLIB_SEP '|'
+# if defined(__VMS)
+# define PERLLIB_SEP PL_perllib_sep
# else
# define PERLLIB_SEP ':'
# endif
if (lastslash) {
SV *tempsv;
while ((*lastslash = '\0'), /* Do that, come what may. */
- (libpath_len >= 3 && memEQ(libpath, "../", 3)
+ (libpath_len >= 3 && _memEQs(libpath, "../")
&& (lastslash = strrchr(prefix, '/')))) {
if (lastslash[1] == '\0'
|| (lastslash[1] == '.'
Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
{
SV *atsv;
- volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
+ VOL const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
CV *cv;
STRLEN len;
int ret;
while (PL_scopestack_ix > oldscope)
LEAVE;
JMPENV_POP;
- Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
+ Perl_croak(aTHX_ "%" SVf, SVfARG(atsv));
}
break;
case 1:
https://perl5.git.perl.org / perl5.git / blobdiff