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| author | Jakub Jelinek <jakub@redhat.com> | 2008-06-06 19:23:39 +0000 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2008-06-06 19:23:39 +0000 |
| commit | eef8a803a6846407fcd4955c3fb19036b6fac586 (patch) | |
| tree | 4603c4e2037d20190a2d408ad5ff4ba6fdcea9f1 /misc/regexp.h | |
| parent | ee78670e26f24777550cb2cc44c79f427477a59c (diff) | |
| download | glibc-eef8a803a6846407fcd4955c3fb19036b6fac586.tar glibc-eef8a803a6846407fcd4955c3fb19036b6fac586.tar.gz glibc-eef8a803a6846407fcd4955c3fb19036b6fac586.tar.bz2 glibc-eef8a803a6846407fcd4955c3fb19036b6fac586.zip | |
* misc/regexp.h (compile): Use __REPB_PREFIX macro.
Avoid segfault if first GETC returns eof/'\0'/'\n'.
2008-06-05 Jakub Jelinek <jakub@redhat.com>
* misc/regexp.h (compile): Use __REPB_PREFIX macro.
Avoid segfault if first GETC returns eof/'\0'/'\n'.
Diffstat (limited to 'misc/regexp.h')
| -rw-r--r-- | misc/regexp.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/misc/regexp.h b/misc/regexp.h index b7b50b7105..0e979d2d87 100644 --- a/misc/regexp.h +++ b/misc/regexp.h @@ -1,4 +1,5 @@ -/* Copyright (C) 1996, 1997, 1998, 1999, 2004 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997, 1998, 1999, 2004, 2008 + Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. @@ -129,8 +130,9 @@ compile (char *__restrict instring, char *__restrict expbuf, __expr_ptr = (regex_t *) expbuf; /* The remaining space in the buffer can be used for the compiled pattern. */ - __expr_ptr->buffer = expbuf + sizeof (regex_t); - __expr_ptr->allocated = endbuf - (char *) __expr_ptr->buffer; + __expr_ptr->__REPB_PREFIX (buffer) = expbuf + sizeof (regex_t); + __expr_ptr->__REPB_PREFIX (allocated) + = endbuf - (char *) __expr_ptr->__REPB_PREFIX (buffer); while ((__ch = (GETC ())) != eof) { @@ -162,7 +164,10 @@ compile (char *__restrict instring, char *__restrict expbuf, } __input_buffer[__current_size++] = __ch; } - __input_buffer[__current_size++] = '\0'; + if (__current_size) + __input_buffer[__current_size++] = '\0'; + else + __input_buffer = ""; /* Now compile the pattern. */ __error = regcomp (__expr_ptr, __input_buffer, REG_NEWLINE); @@ -198,7 +203,8 @@ compile (char *__restrict instring, char *__restrict expbuf, } /* Everything is ok. */ - RETURN ((char *) (__expr_ptr->buffer + __expr_ptr->used)); + RETURN ((char *) (__expr_ptr->__REPB_PREFIX (buffer) + + __expr_ptr->__REPB_PREFIX (used))); } #endif |