X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=util.c;h=fad5520bea6cfd1f3a90b10250ec37d788cf8bf3;hb=e52fd6f4ebd87d6146c934dfc974265434a96d9b;hp=7bd99f5131baf0a5028c39856bd06cf084d130f9;hpb=2d03de9c8d99c75ed163fdcdde85a243a29ccc8c;p=p5sagit%2Fp5-mst-13.2.git diff --git a/util.c b/util.c index 7bd99f5..fad5520 100644 --- a/util.c +++ b/util.c @@ -365,7 +365,7 @@ Analyses the string in order to make fast searches on it using fbm_instr() void Perl_fbm_compile(pTHX_ SV *sv, U32 flags) { - const register U8 *s; + register const U8 *s; register U32 i; STRLEN len; I32 rarest = 0; @@ -552,7 +552,7 @@ Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *lit return Nullch; } if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) { - char *b = ninstr((char*)big,(char*)bigend, + char * const b = ninstr((char*)big,(char*)bigend, (char*)little, (char*)little + littlelen); if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */ @@ -569,8 +569,8 @@ Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *lit } { /* Do actual FBM. */ - register const unsigned char *table = little + littlelen + FBM_TABLE_OFFSET; - const register unsigned char *oldlittle; + register const unsigned char * const table = little + littlelen + FBM_TABLE_OFFSET; + register const unsigned char *oldlittle; if (littlelen > (STRLEN)(bigend - big)) return Nullch; @@ -632,13 +632,13 @@ Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *lit char * Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last) { - const register unsigned char *big; + register const unsigned char *big; register I32 pos; register I32 previous; register I32 first; - const register unsigned char *little; + register const unsigned char *little; register I32 stop_pos; - const register unsigned char *littleend; + register const unsigned char *littleend; I32 found = 0; if (*old_posp == -1 @@ -680,7 +680,7 @@ Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift } big -= previous; do { - const register unsigned char *s, *x; + register const unsigned char *s, *x; if (pos >= stop_pos) break; if (big[pos] != first) continue; @@ -985,7 +985,7 @@ S_closest_cop(pTHX_ COP *cop, const OP *o) SV * Perl_vmess(pTHX_ const char *pat, va_list *args) { - SV *sv = mess_alloc(); + SV * const sv = mess_alloc(); static const char dgd[] = " during global destruction.\n"; sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); @@ -1495,20 +1495,41 @@ Perl_my_setenv(pTHX_ const char *nam, const char *val) my_setenv_format(environ[i], nam, nlen, val, vlen); } else { # endif -# if defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN) - setenv(nam, val, 1); +# if defined(__CYGWIN__) || defined(EPOC) || defined(__SYMBIAN32__) +# if defined(HAS_UNSETENV) + if (val == NULL) { + (void)unsetenv(nam); + } else { + (void)setenv(nam, val, 1); + } +# else /* ! HAS_UNSETENV */ + (void)setenv(nam, val, 1); +# endif /* HAS_UNSETENV */ # else - char *new_env; - const int nlen = strlen(nam); - int vlen; - if (!val) { - val = ""; - } - vlen = strlen(val); - new_env = (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); - /* all that work just for this */ - my_setenv_format(new_env, nam, nlen, val, vlen); - (void)putenv(new_env); +# if defined(HAS_UNSETENV) + if (val == NULL) { + (void)unsetenv(nam); + } else { + const int nlen = strlen(nam); + const int vlen = strlen(val); + char * const new_env = + (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); + my_setenv_format(new_env, nam, nlen, val, vlen); + (void)putenv(new_env); + } +# else /* ! HAS_UNSETENV */ + char *new_env; + const int nlen = strlen(nam); + int vlen; + if (!val) { + val = ""; + } + vlen = strlen(val); + new_env = (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); + /* all that work just for this */ + my_setenv_format(new_env, nam, nlen, val, vlen); + (void)putenv(new_env); +# endif /* HAS_UNSETENV */ # endif /* __CYGWIN__ */ #ifndef PERL_USE_SAFE_PUTENV } @@ -1543,7 +1564,7 @@ I32 Perl_setenv_getix(pTHX_ const char *nam) { register I32 i; - const register I32 len = strlen(nam); + register const I32 len = strlen(nam); for (i = 0; environ[i]; i++) { if ( @@ -1563,7 +1584,7 @@ Perl_setenv_getix(pTHX_ const char *nam) #ifdef UNLINK_ALL_VERSIONS I32 -Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */ +Perl_unlnk(pTHX_ const char *f) /* unlink all versions of a file */ { I32 i; @@ -2123,13 +2144,13 @@ Perl_my_popen_list(pTHX_ char *mode, int n, SV **args) /* VMS' my_popen() is in VMS.c, same with OS/2. */ #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) PerlIO * -Perl_my_popen(pTHX_ char *cmd, char *mode) +Perl_my_popen(pTHX_ const char *cmd, const char *mode) { int p[2]; register I32 This, that; register Pid_t pid; SV *sv; - I32 doexec = !(*cmd == '-' && cmd[1] == '\0'); + const I32 doexec = !(*cmd == '-' && cmd[1] == '\0'); I32 did_pipes = 0; int pp[2]; @@ -2212,7 +2233,9 @@ Perl_my_popen(pTHX_ char *cmd, char *mode) PL_ppid = (IV)getppid(); #endif PL_forkprocess = 0; +#ifdef PERL_USES_PL_PIDSTATUS hv_clear(PL_pidstatus); /* we have no children */ +#endif return Nullfp; #undef THIS #undef THAT @@ -2615,17 +2638,16 @@ Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) I32 result = 0; if (!pid) return -1; -#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) +#ifdef PERL_USES_PL_PIDSTATUS { - char spid[TYPE_CHARS(IV)]; - if (pid > 0) { - SV** svp; - sprintf(spid, "%"IVdf, (IV)pid); - svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE); + /* The keys in PL_pidstatus are now the raw 4 (or 8) bytes of the + pid, rather than a string form. */ + SV * const * const svp = hv_fetch(PL_pidstatus,(const char*) &pid,sizeof(Pid_t),FALSE); if (svp && *svp != &PL_sv_undef) { *statusp = SvIVX(*svp); - (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); + (void)hv_delete(PL_pidstatus,(const char*) &pid,sizeof(Pid_t), + G_DISCARD); return pid; } } @@ -2634,12 +2656,21 @@ Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) hv_iterinit(PL_pidstatus); if ((entry = hv_iternext(PL_pidstatus))) { - SV *sv = hv_iterval(PL_pidstatus,entry); + SV * const sv = hv_iterval(PL_pidstatus,entry); + I32 len; + const char *spid = hv_iterkey(entry,&len); - pid = atoi(hv_iterkey(entry,(I32*)statusp)); + assert (len == sizeof(Pid_t)); + memcpy((char *)&pid, spid, len); *statusp = SvIVX(sv); - sprintf(spid, "%"IVdf, (IV)pid); - (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); + /* The hash iterator is currently on this entry, so simply + calling hv_delete would trigger the lazy delete, which on + aggregate does more work, beacuse next call to hv_iterinit() + would spot the flag, and have to call the delete routine, + while in the meantime any new entries can't re-use that + memory. */ + hv_iterinit(PL_pidstatus); + (void)hv_delete(PL_pidstatus,spid,len,G_DISCARD); return pid; } } @@ -2657,7 +2688,7 @@ Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) result = wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); goto finish; #endif -#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) +#ifdef PERL_USES_PL_PIDSTATUS #if defined(HAS_WAITPID) && defined(HAS_WAITPID_RUNTIME) hard_way: #endif @@ -2682,18 +2713,18 @@ Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) } #endif /* !DOSISH || OS2 || WIN32 || NETWARE */ +#ifdef PERL_USES_PL_PIDSTATUS void Perl_pidgone(pTHX_ Pid_t pid, int status) { register SV *sv; - char spid[TYPE_CHARS(IV)]; - sprintf(spid, "%"IVdf, (IV)pid); - sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE); + sv = *hv_fetch(PL_pidstatus,(const char*)&pid,sizeof(Pid_t),TRUE); SvUPGRADE(sv,SVt_IV); SvIV_set(sv, status); return; } +#endif #if defined(atarist) || defined(OS2) || defined(EPOC) int pclose(); @@ -2707,7 +2738,7 @@ Perl_my_pclose(pTHX_ PerlIO *ptr) #endif { /* Needs work for PerlIO ! */ - FILE *f = PerlIO_findFILE(ptr); + FILE * const f = PerlIO_findFILE(ptr); I32 result = pclose(f); PerlIO_releaseFILE(ptr,f); return result; @@ -2720,7 +2751,7 @@ I32 Perl_my_pclose(pTHX_ PerlIO *ptr) { /* Needs work for PerlIO ! */ - FILE *f = PerlIO_findFILE(ptr); + FILE * const f = PerlIO_findFILE(ptr); I32 result = djgpp_pclose(f); result = (result << 8) & 0xff00; PerlIO_releaseFILE(ptr,f); @@ -2732,7 +2763,7 @@ void Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count) { register I32 todo; - register const char *frombase = from; + register const char * const frombase = from; if (len == 1) { register const char c = *from; @@ -2756,7 +2787,7 @@ Perl_same_dirent(pTHX_ const char *a, const char *b) char *fb = strrchr(b,'/'); Stat_t tmpstatbuf1; Stat_t tmpstatbuf2; - SV *tmpsv = sv_newmortal(); + SV * const tmpsv = sv_newmortal(); if (fa) fa++; @@ -2786,7 +2817,8 @@ Perl_same_dirent(pTHX_ const char *a, const char *b) #endif /* !HAS_RENAME */ char* -Perl_find_script(pTHX_ const char *scriptname, bool dosearch, const char **search_ext, I32 flags) +Perl_find_script(pTHX_ const char *scriptname, bool dosearch, + const char *const *const search_ext, I32 flags) { const char *xfound = Nullch; char *xfailed = Nullch; @@ -2808,8 +2840,8 @@ Perl_find_script(pTHX_ const char *scriptname, bool dosearch, const char **searc #endif /* additional extensions to try in each dir if scriptname not found */ #ifdef SEARCH_EXTS - const char *exts[] = { SEARCH_EXTS }; - const char **ext = search_ext ? search_ext : exts; + const char *const exts[] = { SEARCH_EXTS }; + const char *const *const ext = search_ext ? search_ext : exts; int extidx = 0, i = 0; const char *curext = Nullch; #else @@ -2841,16 +2873,16 @@ Perl_find_script(pTHX_ const char *scriptname, bool dosearch, const char **searc # ifdef ALWAYS_DEFTYPES len = strlen(scriptname); if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') { - int hasdir, idx = 0, deftypes = 1; + int idx = 0, deftypes = 1; bool seen_dot = 1; - hasdir = !dosearch || (strpbrk(scriptname,":[ 1 ) { + if ( saw_period > 1 ) qv = 1; /* force quoted version processing */ - } pos = s; if ( qv ) - hv_store((HV *)hv, "qv", 2, &PL_sv_yes, 0); - if ( saw_under ) { - hv_store((HV *)hv, "alpha", 5, &PL_sv_yes, 0); - } + hv_store((HV *)hv, "qv", 2, newSViv(qv), 0); + if ( alpha ) + hv_store((HV *)hv, "alpha", 5, newSViv(alpha), 0); if ( !qv && width < 3 ) hv_store((HV *)hv, "width", 5, newSViv(width), 0); @@ -3949,7 +3983,7 @@ Perl_scan_version(pTHX_ const char *s, SV *rv, bool qv) * point of a version originally created with a bare * floating point number, i.e. not quoted in any way */ - if ( !qv && s > start+1 && saw_period == 1 ) { + if ( !qv && s > start && saw_period == 1 ) { mult *= 100; while ( s < end ) { orev = rev; @@ -4017,7 +4051,7 @@ Perl_scan_version(pTHX_ const char *s, SV *rv, bool qv) av_push(av, newSViv(0)); /* And finally, store the AV in the hash */ - hv_store((HV *)hv, "version", 7, (SV *)av, 0); + hv_store((HV *)hv, "version", 7, newRV_noinc((SV *)av), 0); return s; } @@ -4044,7 +4078,7 @@ Perl_new_version(pTHX_ SV *ver) AV * const av = newAV(); AV *sav; /* This will get reblessed later if a derived class*/ - SV* const hv = newSVrv(rv, "version"); + SV * const hv = newSVrv(rv, "version"); (void)sv_upgrade(hv, SVt_PVHV); /* needs to be an HV type */ #ifndef NODEFAULT_SHAREKEYS HvSHAREKEYS_on(hv); /* key-sharing on by default */ @@ -4066,7 +4100,7 @@ Perl_new_version(pTHX_ SV *ver) hv_store((HV *)hv, "width", 5, newSViv(width), 0); } - sav = (AV *)*hv_fetch((HV*)ver, "version", 7, FALSE); + sav = (AV *)SvRV(*hv_fetch((HV*)ver, "version", 7, FALSE)); /* This will get reblessed later if a derived class*/ for ( key = 0; key <= av_len(sav); key++ ) { @@ -4074,12 +4108,12 @@ Perl_new_version(pTHX_ SV *ver) av_push(av, newSViv(rev)); } - hv_store((HV *)hv, "version", 7, (SV *)av, 0); + hv_store((HV *)hv, "version", 7, newRV_noinc((SV *)av), 0); return rv; } #ifdef SvVOK if ( SvVOK(ver) ) { /* already a v-string */ - MAGIC* mg = mg_find(ver,PERL_MAGIC_vstring); + const MAGIC* const mg = mg_find(ver,PERL_MAGIC_vstring); const STRLEN len = mg->mg_len; char * const version = savepvn( (const char*)mg->mg_ptr, len); sv_setpvn(rv,version,len); @@ -4116,8 +4150,8 @@ Perl_upg_version(pTHX_ SV *ver) if ( SvNOK(ver) ) /* may get too much accuracy */ { char tbuf[64]; - sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); - version = savepv(tbuf); + const STRLEN len = my_sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); + version = savepvn(tbuf, len); } #ifdef SvVOK else if ( SvVOK(ver) ) { /* already a v-string */ @@ -4135,6 +4169,45 @@ Perl_upg_version(pTHX_ SV *ver) return ver; } +/* +=for apidoc vverify + +Validates that the SV contains a valid version object. + + bool vverify(SV *vobj); + +Note that it only confirms the bare minimum structure (so as not to get +confused by derived classes which may contain additional hash entries): + +=over 4 + +=item * The SV contains a [reference to a] hash + +=item * The hash contains a "version" key + +=item * The "version" key has [a reference to] an AV as its value + +=back + +=cut +*/ + +bool +Perl_vverify(pTHX_ SV *vs) +{ + SV *sv; + if ( SvROK(vs) ) + vs = SvRV(vs); + + /* see if the appropriate elements exist */ + if ( SvTYPE(vs) == SVt_PVHV + && hv_exists((HV*)vs, "version", 7) + && (sv = SvRV(*hv_fetch((HV*)vs, "version", 7, FALSE))) + && SvTYPE(sv) == SVt_PVAV ) + return TRUE; + else + return FALSE; +} /* =for apidoc vnumify @@ -4161,6 +4234,9 @@ Perl_vnumify(pTHX_ SV *vs) if ( SvROK(vs) ) vs = SvRV(vs); + if ( !vverify(vs) ) + Perl_croak(aTHX_ "Invalid version object"); + /* see if various flags exist */ if ( hv_exists((HV*)vs, "alpha", 5 ) ) alpha = TRUE; @@ -4171,7 +4247,7 @@ Perl_vnumify(pTHX_ SV *vs) /* attempt to retrieve the version array */ - if ( !(av = (AV *)*hv_fetch((HV*)vs, "version", 7, FALSE) ) ) { + if ( !(av = (AV *)SvRV(*hv_fetch((HV*)vs, "version", 7, FALSE)) ) ) { sv_catpvn(sv,"0",1); return sv; } @@ -4184,17 +4260,17 @@ Perl_vnumify(pTHX_ SV *vs) } digit = SvIV(*av_fetch(av, 0, 0)); - Perl_sv_setpvf(aTHX_ sv,"%d.", (int)PERL_ABS(digit)); + Perl_sv_setpvf(aTHX_ sv, "%d.", (int)PERL_ABS(digit)); for ( i = 1 ; i < len ; i++ ) { digit = SvIV(*av_fetch(av, i, 0)); if ( width < 3 ) { const int denom = (int)pow(10,(3-width)); const div_t term = div((int)PERL_ABS(digit),denom); - Perl_sv_catpvf(aTHX_ sv,"%0*d_%d", width, term.quot, term.rem); + Perl_sv_catpvf(aTHX_ sv, "%0*d_%d", width, term.quot, term.rem); } else { - Perl_sv_catpvf(aTHX_ sv,"%0*d", width, (int)digit); + Perl_sv_catpvf(aTHX_ sv, "%0*d", width, (int)digit); } } @@ -4202,14 +4278,12 @@ Perl_vnumify(pTHX_ SV *vs) { digit = SvIV(*av_fetch(av, len, 0)); if ( alpha && width == 3 ) /* alpha version */ - Perl_sv_catpv(aTHX_ sv,"_"); - /* Don't display additional trailing zeros */ - if ( digit > 0 ) - Perl_sv_catpvf(aTHX_ sv,"%0*d", width, (int)digit); + sv_catpvn(sv,"_",1); + Perl_sv_catpvf(aTHX_ sv, "%0*d", width, (int)digit); } - else /* len == 1 */ + else /* len == 0 */ { - sv_catpvn(sv,"000",3); + sv_catpvn(sv,"000",3); } return sv; } @@ -4238,23 +4312,28 @@ Perl_vnormal(pTHX_ SV *vs) if ( SvROK(vs) ) vs = SvRV(vs); + if ( !vverify(vs) ) + Perl_croak(aTHX_ "Invalid version object"); + if ( hv_exists((HV*)vs, "alpha", 5 ) ) alpha = TRUE; - av = (AV *)*hv_fetch((HV*)vs, "version", 7, FALSE); + av = (AV *)SvRV(*hv_fetch((HV*)vs, "version", 7, FALSE)); len = av_len(av); - if ( len == -1 ) { + if ( len == -1 ) + { sv_catpvn(sv,"",0); return sv; } digit = SvIV(*av_fetch(av, 0, 0)); - Perl_sv_setpvf(aTHX_ sv,"v%"IVdf,(IV)digit); - for ( i = 1 ; i <= len-1 ; i++ ) { + Perl_sv_setpvf(aTHX_ sv, "v%"IVdf, (IV)digit); + for ( i = 1 ; i < len ; i++ ) { digit = SvIV(*av_fetch(av, i, 0)); Perl_sv_catpvf(aTHX_ sv, ".%"IVdf, (IV)digit); } - if ( len > 0 ) { + if ( len > 0 ) + { /* handle last digit specially */ digit = SvIV(*av_fetch(av, len, 0)); if ( alpha ) @@ -4267,7 +4346,6 @@ Perl_vnormal(pTHX_ SV *vs) for ( len = 2 - len; len != 0; len-- ) sv_catpvn(sv,".0",2); } - return sv; } @@ -4287,6 +4365,10 @@ Perl_vstringify(pTHX_ SV *vs) { if ( SvROK(vs) ) vs = SvRV(vs); + + if ( !vverify(vs) ) + Perl_croak(aTHX_ "Invalid version object"); + if ( hv_exists((HV *)vs, "qv", 2) ) return vnormal(vs); else @@ -4316,13 +4398,19 @@ Perl_vcmp(pTHX_ SV *lhv, SV *rhv) if ( SvROK(rhv) ) rhv = SvRV(rhv); + if ( !vverify(lhv) ) + Perl_croak(aTHX_ "Invalid version object"); + + if ( !vverify(rhv) ) + Perl_croak(aTHX_ "Invalid version object"); + /* get the left hand term */ - lav = (AV *)*hv_fetch((HV*)lhv, "version", 7, FALSE); + lav = (AV *)SvRV(*hv_fetch((HV*)lhv, "version", 7, FALSE)); if ( hv_exists((HV*)lhv, "alpha", 5 ) ) lalpha = TRUE; /* and the right hand term */ - rav = (AV *)*hv_fetch((HV*)rhv, "version", 7, FALSE); + rav = (AV *)SvRV(*hv_fetch((HV*)rhv, "version", 7, FALSE)); if ( hv_exists((HV*)rhv, "alpha", 5 ) ) ralpha = TRUE; @@ -4646,8 +4734,9 @@ Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { =for apidoc sv_nosharing Dummy routine which "shares" an SV when there is no sharing module present. -Exists to avoid test for a NULL function pointer and because it could potentially warn under -some level of strict-ness. +Or "locks" it. Or "unlocks" it. In other words, ignores its single SV argument. +Exists to avoid test for a NULL function pointer and because it could +potentially warn under some level of strict-ness. =cut */ @@ -4658,39 +4747,6 @@ Perl_sv_nosharing(pTHX_ SV *sv) PERL_UNUSED_ARG(sv); } -/* -=for apidoc sv_nolocking - -Dummy routine which "locks" an SV when there is no locking module present. -Exists to avoid test for a NULL function pointer and because it could potentially warn under -some level of strict-ness. - -=cut -*/ - -void -Perl_sv_nolocking(pTHX_ SV *sv) -{ - PERL_UNUSED_ARG(sv); -} - - -/* -=for apidoc sv_nounlocking - -Dummy routine which "unlocks" an SV when there is no locking module present. -Exists to avoid test for a NULL function pointer and because it could potentially warn under -some level of strict-ness. - -=cut -*/ - -void -Perl_sv_nounlocking(pTHX_ SV *sv) -{ - PERL_UNUSED_ARG(sv); -} - U32 Perl_parse_unicode_opts(pTHX_ const char **popt) { @@ -4964,11 +5020,12 @@ Perl_mem_log_alloc(const UV n, const UV typesize, const char *typename, Malloc_t #ifdef PERL_MEM_LOG_STDERR /* We can't use PerlIO for obvious reasons. */ char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE]; - sprintf(buf, - "alloc: %s:%d:%s: %"IVdf" %"UVuf" %s = %"IVdf": %"UVxf"\n", - filename, linenumber, funcname, - n, typesize, typename, n * typesize, PTR2UV(newalloc)); - PerlLIO_write(2, buf, strlen(buf)); + const STRLEN len = my_sprintf(buf, + "alloc: %s:%d:%s: %"IVdf" %"UVuf + " %s = %"IVdf": %"UVxf"\n", + filename, linenumber, funcname, n, typesize, + typename, n * typesize, PTR2UV(newalloc)); + PerlLIO_write(2, buf, len)); #endif return newalloc; } @@ -4979,11 +5036,12 @@ Perl_mem_log_realloc(const UV n, const UV typesize, const char *typename, Malloc #ifdef PERL_MEM_LOG_STDERR /* We can't use PerlIO for obvious reasons. */ char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE]; - sprintf(buf, - "realloc: %s:%d:%s: %"IVdf" %"UVuf" %s = %"IVdf": %"UVxf" -> %"UVxf"\n", - filename, linenumber, funcname, - n, typesize, typename, n * typesize, PTR2UV(oldalloc), PTR2UV(newalloc)); - PerlLIO_write(2, buf, strlen(buf)); + const STRLEN len = my_sprintf(buf, "realloc: %s:%d:%s: %"IVdf" %"UVuf + " %s = %"IVdf": %"UVxf" -> %"UVxf"\n", + filename, linenumber, funcname, n, typesize, + typename, n * typesize, PTR2UV(oldalloc), + PTR2UV(newalloc)); + PerlLIO_write(2, buf, len); #endif return newalloc; } @@ -4994,9 +5052,10 @@ Perl_mem_log_free(Malloc_t oldalloc, const char *filename, const int linenumber, #ifdef PERL_MEM_LOG_STDERR /* We can't use PerlIO for obvious reasons. */ char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE]; - sprintf(buf, "free: %s:%d:%s: %"UVxf"\n", - filename, linenumber, funcname, PTR2UV(oldalloc)); - PerlLIO_write(2, buf, strlen(buf)); + const STRLEN len = my_sprintf(buf, "free: %s:%d:%s: %"UVxf"\n", + filename, linenumber, funcname, + PTR2UV(oldalloc)); + PerlLIO_write(2, buf, len); #endif return oldalloc; } @@ -5004,6 +5063,81 @@ Perl_mem_log_free(Malloc_t oldalloc, const char *filename, const int linenumber, #endif /* PERL_MEM_LOG */ /* +=for apidoc my_sprintf + +The C library C, wrapped if necessary, to ensure that it will return +the length of the string written to the buffer. Only rare pre-ANSI systems +need the wrapper function - usually this is a direct call to C. + +=cut +*/ +#ifndef SPRINTF_RETURNS_STRLEN +int +Perl_my_sprintf(char *buffer, const char* pat, ...) +{ + va_list args; + va_start(args, pat); + vsprintf(buffer, pat, args); + va_end(args); + return strlen(buffer); +} +#endif + +void +Perl_my_clearenv(pTHX) +{ + dVAR; +#if ! defined(PERL_MICRO) +# if defined(PERL_IMPLICIT_SYS) || defined(WIN32) + PerlEnv_clearenv(); +# else /* ! (PERL_IMPLICIT_SYS || WIN32) */ +# if defined(USE_ENVIRON_ARRAY) +# if defined(USE_ITHREADS) + /* only the parent thread can clobber the process environment */ + if (PL_curinterp == aTHX) +# endif /* USE_ITHREADS */ + { +# if ! defined(PERL_USE_SAFE_PUTENV) + if ( !PL_use_safe_putenv) { + I32 i; + if (environ == PL_origenviron) + environ = (char**)safesysmalloc(sizeof(char*)); + else + for (i = 0; environ[i]; i++) + (void)safesysfree(environ[i]); + } + environ[0] = NULL; +# else /* PERL_USE_SAFE_PUTENV */ +# if defined(HAS_CLEARENV) + (void)clearenv(); +# elif defined(HAS_UNSETENV) + int bsiz = 80; /* Most envvar names will be shorter than this. */ + char *buf = (char*)safesysmalloc(bsiz * sizeof(char)); + while (*environ != NULL) { + char *e = strchr(*environ, '='); + int l = e ? e - *environ : strlen(*environ); + if (bsiz < l + 1) { + (void)safesysfree(buf); + bsiz = l + 1; + buf = (char*)safesysmalloc(bsiz * sizeof(char)); + } + strncpy(buf, *environ, l); + *(buf + l) = '\0'; + (void)unsetenv(buf); + } + (void)safesysfree(buf); +# else /* ! HAS_CLEARENV && ! HAS_UNSETENV */ + /* Just null environ and accept the leakage. */ + *environ = NULL; +# endif /* HAS_CLEARENV || HAS_UNSETENV */ +# endif /* ! PERL_USE_SAFE_PUTENV */ + } +# endif /* USE_ENVIRON_ARRAY */ +# endif /* PERL_IMPLICIT_SYS || WIN32 */ +#endif /* PERL_MICRO */ +} + +/* * Local variables: * c-indentation-style: bsd * c-basic-offset: 4