diff options
author | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-04 05:11:52 +0000 |
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committer | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-04 05:11:52 +0000 |
commit | eeaf7dd3c8a85a6806109de393099fbe7d56b549 (patch) | |
tree | e3d1bf835c84e55e22967d01340f105c3e89d7a7 /regex.c | |
parent | 8f667853a34ca67826eb6b7d76ec1e89a47327ac (diff) |
merge revision(s) 18212:
* regex.c (xmalloc, xrealloc, xfree): not to use ruby managed memory.
* regex.c (DOUBLE_STACK, re_compile_fastmap0, re_adjust_startpos),
(re_search, re_match_exec): check if failed to allocate memory.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_6@18343 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'regex.c')
-rw-r--r-- | regex.c | 46 |
1 files changed, 36 insertions, 10 deletions
@@ -50,6 +50,9 @@ /* We need this for `regex.h', and perhaps for the Emacs include files. */ # include <sys/types.h> #endif +#ifdef HAVE_STDLIB_H +# include <stdlib.h> +#endif #if !defined(__STDC__) && !defined(_MSC_VER) # define volatile @@ -63,6 +66,10 @@ #ifdef RUBY_PLATFORM #include "defines.h" +#undef xmalloc +#undef xrealloc +#undef xcalloc +#undef xfree # define RUBY extern int rb_prohibit_interrupt; @@ -104,6 +111,11 @@ void *alloca (); # include <strings.h> #endif +#define xmalloc malloc +#define xrealloc realloc +#define xcalloc calloc +#define xfree free + #ifdef C_ALLOCA #define FREE_VARIABLES() alloca(0) #else @@ -127,10 +139,12 @@ void *alloca (); unsigned int xlen = stacke - stackb; \ if (stackb == stacka) { \ stackx = (type*)xmalloc(2 * xlen * sizeof(type)); \ + if (!stackx) goto memory_exhausted; \ memcpy(stackx, stackb, xlen * sizeof (type)); \ } \ else { \ stackx = (type*)xrealloc(stackb, 2 * xlen * sizeof(type)); \ + if (!stackx) goto memory_exhausted; \ } \ /* Rearrange the pointers. */ \ stackp = stackx + (stackp - stackb); \ @@ -2769,8 +2783,8 @@ bm_search(little, llen, big, blen, skip, translate) The caller must supply the address of a (1 << BYTEWIDTH)-byte data area as bufp->fastmap. The other components of bufp describe the pattern to be used. */ -void -re_compile_fastmap(bufp) +static int +re_compile_fastmap0(bufp) struct re_pattern_buffer *bufp; { unsigned char *pattern = (unsigned char*)bufp->buffer; @@ -2938,7 +2952,7 @@ re_compile_fastmap(bufp) fastmap[j] = 1; } if (bufp->can_be_null) { - FREE_AND_RETURN_VOID(stackb); + FREE_AND_RETURN(stackb, 0); } /* Don't return; check the alternative paths so we can set can_be_null if appropriate. */ @@ -3104,7 +3118,16 @@ re_compile_fastmap(bufp) else break; } - FREE_AND_RETURN_VOID(stackb); + FREE_AND_RETURN(stackb, 0); + memory_exhausted: + FREE_AND_RETURN(stackb, -2); +} + +void +re_compile_fastmap(bufp) + struct re_pattern_buffer *bufp; +{ + (void)re_compile_fastmap0(bufp); } /* adjust startpos value to the position between characters. */ @@ -3138,7 +3161,8 @@ re_adjust_startpos(bufp, string, size, startpos, range) { /* Update the fastmap now if not correct already. */ if (!bufp->fastmap_accurate) { - re_compile_fastmap(bufp); + int ret = re_compile_fastmap0(bufp); + if (ret) return ret; } /* Adjust startpos for mbc string */ @@ -3184,7 +3208,8 @@ re_search(bufp, string, size, startpos, range, regs) /* Update the fastmap now if not correct already. */ if (fastmap && !bufp->fastmap_accurate) { - re_compile_fastmap(bufp); + int ret = re_compile_fastmap0(bufp); + if (ret) return ret; } @@ -3574,7 +3599,7 @@ re_match_exec(bufp, string_arg, size, pos, beg, regs) ``dummy''; if a failure happens and the failure point is a dummy, it gets discarded and the next next one is tried. */ - unsigned char **stacka; + unsigned char **const stacka = 0; unsigned char **stackb; unsigned char **stackp; unsigned char **stacke; @@ -3623,8 +3648,7 @@ re_match_exec(bufp, string_arg, size, pos, beg, regs) } /* Initialize the stack. */ - stacka = RE_TALLOC(MAX_NUM_FAILURE_ITEMS * NFAILURES, unsigned char*); - stackb = stacka; + stackb = TMALLOC(MAX_NUM_FAILURE_ITEMS * NFAILURES, unsigned char*); stackp = stackb; stacke = &stackb[MAX_NUM_FAILURE_ITEMS * NFAILURES]; @@ -4394,6 +4418,8 @@ re_match_exec(bufp, string_arg, size, pos, beg, regs) goto restore_best_regs; FREE_AND_RETURN(stackb,(-1)); /* Failure to match. */ + memory_exhausted: + FREE_AND_RETURN(stackb,(-2)); } @@ -4657,5 +4683,5 @@ utf8_startpos(string, pos) mode : C c-file-style : "gnu" tab-width : 8 - End : + End */ |