diff options
| -rw-r--r-- | src/RESearch.cxx | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/RESearch.cxx b/src/RESearch.cxx index 430a65e1f..e19d160f5 100644 --- a/src/RESearch.cxx +++ b/src/RESearch.cxx @@ -30,6 +30,9 @@ * Modification history: * * $Log$ + * Revision 1.9 2003/03/21 10:36:08 nyamatongwe + * Detect patterns too long in regular expression search. + * * Revision 1.8 2003/03/04 10:53:59 nyamatongwe * Patch from Jakub to optionally implement more POSIX compatible regular * expressions. \(..\) changes to (..) @@ -345,6 +348,7 @@ const char *RESearch::Compile(const char *pat, int length, bool caseSensitive, b char *mp=nfa; /* nfa pointer */ char *lp; /* saved pointer.. */ char *sp=nfa; /* another one.. */ + char *mpMax = mp + MAXNFA - BITBLK - 10; int tagi = 0; /* tag stack index */ int tagc = 1; /* actual tag count */ @@ -362,6 +366,8 @@ const char *RESearch::Compile(const char *pat, int length, bool caseSensitive, b const char *p=pat; /* pattern pointer */ for (int i=0; i<length; i++, p++) { + if (mp > mpMax) + return badpat("Pattern too long"); lp = mp; switch(*p) { |