Update.

2003-11-19  Jakub Jelinek  <jakub@redhat.com>

	* posix/regexec.c (extend_buffers): Don't allocate
	twice as big state_log as needed.  Don't modify pstr->valid_len
	for mb_cur_max == 1 !icase !trans.

	* posix/regcomp.c (free_bin_tree): Removed.
	(create_tree): Add dfa argument.  Don't call re_malloc for
	each tree, instead allocate from str_tree_storage.
	(re_dfa_add_tree_node): New function.
	(free_dfa_content): Handle freeing if dfa->nodes == NULL
	or dfa->state_table == NULL.
	(re_compile_internal): Call free_dfa_content if init_dfa
	fails.  Call free_workarea_compile, re_string_destruct
	and free_dfa_content for most of the other failure paths.
	(init_dfa): Initialize str_tree_storage_idx.
	Don't clear any fields on allocation failure.
	(free_workarea_compile): Free str_tree_storage chunks
	instead of free_bin_tree (dfa->str_tree).
	(parse): Call re_dfa_add_tree_node instead of re_dfa_add_node
	followed by create_tree.  Add dfa argument to remaining
	create_tree calls.  Remove new_idx variable.  Remove calls
	to free_bin_tree.
	(parse_reg_exp, parse_branch, parse_expression, parse_sub_exp,
	parse_dup_op, parse_bracket_exp, build_charclass_op): Likewise.
	(duplicate_tree): Remove calls to free_bin_tree, add dfa
	argument to create_tree.
	* posix/regex_internal.h (BIN_TREE_STORAGE_SIZE): Define.
	(bin_tree_storage_t): New type.
	(re_dfa_t): Add str_tree_storage and str_tree_storage_idx
	fields.
	* posix/Makefile (tests): Add bug-regex21.
	(generated): Add bug-regex21-mem, bug-regex21.mtrace,
	tst-rxspencer-mem and tst-rxspencer.mtrace.
	(tests): Depend on $(objpfx)bug-regex21-mem
	and $(objpfx)tst-rxspencer-mem.
	(bug-regex21-ENV, tst-rxspencer-ENV): Set.
	($(objpfx)bug-regex21-mem, $(objpfx)tst-rxspencer-mem): New.
	* posix/tst-rxspencer.c (main): Add call to mtrace.
	Free line at the end.
	* posix/bug-regex21.c: New test.

	* posix/regexec.c (get_subexp): After calling get_subexp_sub

1 files changed, 45 insertions, 0 deletions

diff --git a/posix/bug-regex21.c b/posix/bug-regex21.c
new file mode 100644
index 0000000..d67c4fe
--- /dev/null
+++ b/posix/bug-regex21.c
@@ -0,0 +1,45 @@
+/* Test for memory leaks in regcomp.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <mcheck.h>
+#include <regex.h>
+#include <stdio.h>
+
+int main (void)
+{
+  regex_t re;
+  int i;
+  int ret = 0;
+
+  mtrace ();
+
+  for (i = 0; i < 32; ++i)
+    {
+      if (regcomp (&re, "X-.+:.+Y=\".*\\.(A|B|C|D|E|F|G|H|I",
+		   REG_EXTENDED | REG_ICASE) == 0)
+	{
+	  puts ("regcomp unexpectedly succeeded");
+	  ret = 1;
+	}
+      else
+	regfree (&re);
+    }
+  return ret;
+}