diff options
Diffstat (limited to 'pcre_compile.c')
| -rw-r--r-- | pcre_compile.c | 45 |
1 files changed, 25 insertions, 20 deletions
diff --git a/pcre_compile.c b/pcre_compile.c index 0605a6e..2065829 100644 --- a/pcre_compile.c +++ b/pcre_compile.c @@ -6,7 +6,7 @@ and semantics are as close as possible to those of the Perl 5 language. Written by Philip Hazel - Copyright (c) 1997-2009 University of Cambridge + Copyright (c) 1997-2010 University of Cambridge ----------------------------------------------------------------------------- Redistribution and use in source and binary forms, with or without @@ -53,10 +53,11 @@ supporting internal functions that are not used by other modules. */ #include "pcre_internal.h" -/* When DEBUG is defined, we need the pcre_printint() function, which is also -used by pcretest. DEBUG is not defined when building a production library. */ +/* When PCRE_DEBUG is defined, we need the pcre_printint() function, which is +also used by pcretest. PCRE_DEBUG is not defined when building a production +library. */ -#ifdef DEBUG +#ifdef PCRE_DEBUG #include "pcre_printint.src" #endif @@ -1994,9 +1995,10 @@ static BOOL could_be_empty(const uschar *code, const uschar *endcode, branch_chain *bcptr, BOOL utf8) { -while (bcptr != NULL && bcptr->current >= code) +while (bcptr != NULL && bcptr->current_branch >= code) { - if (!could_be_empty_branch(bcptr->current, endcode, utf8)) return FALSE; + if (!could_be_empty_branch(bcptr->current_branch, endcode, utf8)) + return FALSE; bcptr = bcptr->outer; } return TRUE; @@ -2658,7 +2660,7 @@ BOOL utf8 = FALSE; uschar *utf8_char = NULL; #endif -#ifdef DEBUG +#ifdef PCRE_DEBUG if (lengthptr != NULL) DPRINTF((">> start branch\n")); #endif @@ -2717,7 +2719,7 @@ for (;; ptr++) if (lengthptr != NULL) { -#ifdef DEBUG +#ifdef PCRE_DEBUG if (code > cd->hwm) cd->hwm = code; /* High water info */ #endif if (code > cd->start_workspace + COMPILE_WORK_SIZE) /* Check for overrun */ @@ -4213,13 +4215,15 @@ we set the flag only if there is a literal "\r" or "\n" in the class. */ { /* In the pre-compile phase, we don't actually do the replication. We just adjust the length as if we had. Do some paranoid checks for - potential integer overflow. */ + potential integer overflow. The INT64_OR_DOUBLE type is a 64-bit + integer type when available, otherwise double. */ if (lengthptr != NULL) { int delta = (repeat_min - 1)*length_prevgroup; - if ((double)(repeat_min - 1)*(double)length_prevgroup > - (double)INT_MAX || + if ((INT64_OR_DOUBLE)(repeat_min - 1)* + (INT64_OR_DOUBLE)length_prevgroup > + (INT64_OR_DOUBLE)INT_MAX || OFLOW_MAX - *lengthptr < delta) { *errorcodeptr = ERR20; @@ -4265,15 +4269,16 @@ we set the flag only if there is a literal "\r" or "\n" in the class. */ just adjust the length as if we had. For each repetition we must add 1 to the length for BRAZERO and for all but the last repetition we must add 2 + 2*LINKSIZE to allow for the nesting that occurs. Do some - paranoid checks to avoid integer overflow. */ + paranoid checks to avoid integer overflow. The INT64_OR_DOUBLE type is + a 64-bit integer type when available, otherwise double. */ if (lengthptr != NULL && repeat_max > 0) { int delta = repeat_max * (length_prevgroup + 1 + 2 + 2*LINK_SIZE) - 2 - 2*LINK_SIZE; /* Last one doesn't nest */ - if ((double)repeat_max * - (double)(length_prevgroup + 1 + 2 + 2*LINK_SIZE) - > (double)INT_MAX || + if ((INT64_OR_DOUBLE)repeat_max * + (INT64_OR_DOUBLE)(length_prevgroup + 1 + 2 + 2*LINK_SIZE) + > (INT64_OR_DOUBLE)INT_MAX || OFLOW_MAX - *lengthptr < delta) { *errorcodeptr = ERR20; @@ -5787,7 +5792,7 @@ int old_external_options = cd->external_options; branch_chain bc; bc.outer = bcptr; -bc.current = code; +bc.current_branch = code; firstbyte = reqbyte = REQ_UNSET; @@ -6028,7 +6033,7 @@ for (;;) { *code = OP_ALT; PUT(code, 1, code - last_branch); - bc.current = last_branch = code; + bc.current_branch = last_branch = code; code += 1 + LINK_SIZE; } @@ -6641,7 +6646,7 @@ if debugging, leave the test till after things are printed out. */ *code++ = OP_END; -#ifndef DEBUG +#ifndef PCRE_DEBUG if (code - codestart > length) errorcode = ERR23; #endif @@ -6765,7 +6770,7 @@ if (reqbyte >= 0 && /* Print out the compiled data if debugging is enabled. This is never the case when building a production library. */ -#ifdef DEBUG +#ifdef PCRE_DEBUG printf("Length = %d top_bracket = %d top_backref = %d\n", length, re->top_bracket, re->top_backref); @@ -6803,7 +6808,7 @@ if (code - codestart > length) if (errorcodeptr != NULL) *errorcodeptr = ERR23; return NULL; } -#endif /* DEBUG */ +#endif /* PCRE_DEBUG */ return (pcre *)re; } |