diff options
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/regex/engine.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/lib/libc/regex/engine.c b/lib/libc/regex/engine.c index 3f3a68d7af1..687afe9bb54 100644 --- a/lib/libc/regex/engine.c +++ b/lib/libc/regex/engine.c @@ -1,4 +1,4 @@ -/* $OpenBSD: engine.c,v 1.16 2013/04/17 17:39:29 tedu Exp $ */ +/* $OpenBSD: engine.c,v 1.17 2013/11/28 05:09:45 guenther Exp $ */ /*- * Copyright (c) 1992, 1993, 1994 Henry Spencer. @@ -97,6 +97,7 @@ static states step(struct re_guts *, sopno, sopno, states, int, states); #define NOTHING (BOL+3) #define BOW (BOL+4) #define EOW (BOL+5) +/* update nonchars[] array below when adding fake chars here */ #define CODEMAX (BOL+5) /* highest code used */ #define NONCHAR(c) ((c) > CHAR_MAX) #define NNONCHAR (CODEMAX-CHAR_MAX) @@ -107,7 +108,7 @@ static void print(struct match *, char *, states, int, FILE *); static void at(struct match *, char *, char *, char *, sopno, sopno); #endif #ifdef REDEBUG -static char *pchar(int); +static const char *pchar(int); #endif #ifdef REDEBUG @@ -960,8 +961,7 @@ print(struct match *m, char *caption, states st, int ch, FILE *d) return; (void)fprintf(d, "%s", caption); - if (ch != '\0') - (void)fprintf(d, " %s", pchar(ch)); + (void)fprintf(d, " %s", pchar(ch)); for (i = 0; i < g->nstates; i++) if (ISSET(st, i)) { (void)fprintf(d, "%s%d", (first) ? "\t" : ", ", i); @@ -987,6 +987,12 @@ at(struct match *m, char *title, char *start, char *stop, sopno startst, #ifndef PCHARDONE #define PCHARDONE /* never again */ +static const char *nonchars[] = + { "OUT", "BOL", "EOL", "BOLEOL", "NOTHING", "BOW", "EOW" }; +#define PNONCHAR(c) \ + ((c) - OUT < (sizeof(nonchars)/sizeof(nonchars[0])) \ + ? nonchars[(c) - OUT] : "invalid") + /* - pchar - make a character printable * @@ -995,12 +1001,17 @@ at(struct match *m, char *title, char *start, char *stop, sopno startst, * a matching debug.o, and this is convenient. It all disappears in * the non-debug compilation anyway, so it doesn't matter much. */ -static char * /* -> representation */ +static const char * /* -> representation */ pchar(int ch) { static char pbuf[10]; - if (isprint(ch) || ch == ' ') + if (NONCHAR(ch)) { + if (ch - OUT < (sizeof(nonchars)/sizeof(nonchars[0]))) + return nonchars[ch - OUT]; + return "invalid"; + } + if (isprint((unsigned char)ch) || ch == ' ') (void)snprintf(pbuf, sizeof pbuf, "%c", ch); else (void)snprintf(pbuf, sizeof pbuf, "\\%o", ch); |