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authorUlrich Drepper <drepper@redhat.com>2003-11-19 19:37:31 +0000
committerUlrich Drepper <drepper@redhat.com>2003-11-19 19:37:31 +0000
commitee70274a216e7519650e8360d7bda5c5a84eb432 (patch)
tree70fd645281d2c32c8b8ee6bf442c4f352630cdbf /posix
parent89635190cfc6ecc6e815a6e39872efebafb3f998 (diff)
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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, $(objpfx)tst-rxspencer-mem): New. * posix/tst-rxspencer.c (main): Add call to mtrace. Free line at the end. * posix/bug-regex21.c: New test. * posix/regexec.c (get_subexp): After calling get_subexp_sub
Diffstat (limited to 'posix')
-rw-r--r--posix/Makefile19
-rw-r--r--posix/bug-regex21.c45
-rw-r--r--posix/regcomp.c311
-rw-r--r--posix/regex_internal.h19
-rw-r--r--posix/regexec.c4
-rw-r--r--posix/tst-rxspencer.c3
6 files changed, 219 insertions, 182 deletions
diff --git a/posix/Makefile b/posix/Makefile
index c305c5e6dc..692b474764 100644
--- a/posix/Makefile
+++ b/posix/Makefile
@@ -78,7 +78,7 @@ tests := tstgetopt testfnm runtests runptests \
bug-regex8 bug-regex9 bug-regex10 bug-regex11 bug-regex12 \
bug-regex13 bug-regex14 bug-regex15 bug-regex16 \
bug-regex17 bug-regex18 bug-regex19 bug-regex20 \
- tst-nice tst-nanosleep transbug tst-rxspencer
+ bug-regex21 tst-nice tst-nanosleep transbug tst-rxspencer
ifeq (yes,$(build-shared))
test-srcs := globtest
tests += wordexp-test tst-exec tst-spawn
@@ -93,7 +93,8 @@ before-compile := testcases.h ptestcases.h
generated := $(addprefix wordexp-test-result, 1 2 3 4 5 6 7 8 9 10) \
annexc annexc.out wordexp-tst.out bug-regex2-mem \
bug-regex2.mtrace bug-regex14-mem bug-regex14.mtrace \
- tst-getconf.out
+ bug-regex21-mem bug-regex21.mtrace \
+ tst-rxspencer-mem tst-rxspencer.mtrace tst-getconf.out
include ../Rules
@@ -178,7 +179,9 @@ endif
# XXX Please note that for now we ignore the result of this test.
tests: $(objpfx)annexc.out
ifeq (no,$(cross-compiling))
-tests:$(objpfx)bug-regex2-mem $(objpfx)bug-regex14-mem $(objpfx)tst-getconf.out
+tests: $(objpfx)bug-regex2-mem $(objpfx)bug-regex14-mem \
+ $(objpfx)bug-regex21-mem $(objpfx)tst-rxspencer-mem \
+ $(objpfx)tst-getconf.out
endif
$(objpfx)annexc.out: $(objpfx)annexc
@@ -199,6 +202,16 @@ bug-regex14-ENV = MALLOC_TRACE=$(objpfx)bug-regex14.mtrace
$(objpfx)bug-regex14-mem: $(objpfx)bug-regex14.out
$(common-objpfx)malloc/mtrace $(objpfx)bug-regex14.mtrace > $@
+bug-regex21-ENV = MALLOC_TRACE=$(objpfx)bug-regex21.mtrace
+
+$(objpfx)bug-regex21-mem: $(objpfx)bug-regex21.out
+ $(common-objpfx)malloc/mtrace $(objpfx)bug-regex21.mtrace > $@
+
+tst-rxspencer-ENV = MALLOC_TRACE=$(objpfx)tst-rxspencer.mtrace
+
+$(objpfx)tst-rxspencer-mem: $(objpfx)tst-rxspencer.out
+ $(common-objpfx)malloc/mtrace $(objpfx)tst-rxspencer.mtrace > $@
+
$(objpfx)tst-getconf.out: tst-getconf.sh $(objpfx)getconf
$(SHELL) -e $< $(common-objpfx) $(elf-objpfx) $(rtld-installed-name)
diff --git a/posix/bug-regex21.c b/posix/bug-regex21.c
new file mode 100644
index 0000000000..d67c4fe424
--- /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;
+}
diff --git a/posix/regcomp.c b/posix/regcomp.c
index 3128b9bf9f..c94a44012d 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -126,9 +126,13 @@ static bin_tree_t *build_charclass_op (re_dfa_t *dfa, RE_TRANSLATE_TYPE trans,
const unsigned char *class_name,
const unsigned char *extra, int not,
reg_errcode_t *err);
-static void free_bin_tree (bin_tree_t *tree);
-static bin_tree_t *create_tree (bin_tree_t *left, bin_tree_t *right,
+static bin_tree_t *create_tree (re_dfa_t *dfa,
+ bin_tree_t *left, bin_tree_t *right,
re_token_type_t type, int index);
+static bin_tree_t *re_dfa_add_tree_node (re_dfa_t *dfa,
+ bin_tree_t *left, bin_tree_t *right,
+ re_token_t)
+ __attribute ((noinline));
static bin_tree_t *duplicate_tree (const bin_tree_t *src, re_dfa_t *dfa);
/* This table gives an error message for each of the error codes listed
@@ -562,17 +566,18 @@ free_dfa_content (re_dfa_t *dfa)
re_free (dfa->subexps);
- for (i = 0; i < dfa->nodes_len; ++i)
- {
- re_token_t *node = dfa->nodes + i;
+ if (dfa->nodes)
+ for (i = 0; i < dfa->nodes_len; ++i)
+ {
+ re_token_t *node = dfa->nodes + i;
#ifdef RE_ENABLE_I18N
- if (node->type == COMPLEX_BRACKET && node->duplicated == 0)
- free_charset (node->opr.mbcset);
- else
+ if (node->type == COMPLEX_BRACKET && node->duplicated == 0)
+ free_charset (node->opr.mbcset);
+ else
#endif /* RE_ENABLE_I18N */
- if (node->type == SIMPLE_BRACKET && node->duplicated == 0)
- re_free (node->opr.sbcset);
- }
+ if (node->type == SIMPLE_BRACKET && node->duplicated == 0)
+ re_free (node->opr.sbcset);
+ }
re_free (dfa->nexts);
for (i = 0; i < dfa->nodes_len; ++i)
{
@@ -588,20 +593,19 @@ free_dfa_content (re_dfa_t *dfa)
re_free (dfa->inveclosures);
re_free (dfa->nodes);
- for (i = 0; i <= dfa->state_hash_mask; ++i)
- {
- struct re_state_table_entry *entry = dfa->state_table + i;
- for (j = 0; j < entry->num; ++j)
- {
- re_dfastate_t *state = entry->array[j];
- free_state (state);
- }
- re_free (entry->array);
- }
+ if (dfa->state_table)
+ for (i = 0; i <= dfa->state_hash_mask; ++i)
+ {
+ struct re_state_table_entry *entry = dfa->state_table + i;
+ for (j = 0; j < entry->num; ++j)
+ {
+ re_dfastate_t *state = entry->array[j];
+ free_state (state);
+ }
+ re_free (entry->array);
+ }
re_free (dfa->state_table);
-
- if (dfa->word_char != NULL)
- re_free (dfa->word_char);
+ re_free (dfa->word_char);
#ifdef DEBUG
re_free (dfa->re_str);
#endif
@@ -738,7 +742,7 @@ re_compile_internal (preg, pattern, length, syntax)
err = init_dfa (dfa, length);
if (BE (err != REG_NOERROR, 0))
{
- re_free (dfa);
+ free_dfa_content (dfa);
preg->buffer = NULL;
preg->allocated = 0;
return err;
@@ -752,7 +756,10 @@ re_compile_internal (preg, pattern, length, syntax)
syntax & RE_ICASE, dfa);
if (BE (err != REG_NOERROR, 0))
{
- re_free (dfa);
+ re_compile_internal_free_return:
+ free_workarea_compile (preg);
+ re_string_destruct (&regexp);
+ free_dfa_content (dfa);
preg->buffer = NULL;
preg->allocated = 0;
return err;
@@ -785,7 +792,6 @@ re_compile_internal (preg, pattern, length, syntax)
if (BE (err != REG_NOERROR, 0))
{
- re_compile_internal_free_return:
free_dfa_content (dfa);
preg->buffer = NULL;
preg->allocated = 0;
@@ -806,6 +812,9 @@ init_dfa (dfa, pat_len)
memset (dfa, '\0', sizeof (re_dfa_t));
+ /* Force allocation of str_tree_storage the first time. */
+ dfa->str_tree_storage_idx = BIN_TREE_STORAGE_SIZE;
+
dfa->nodes_alloc = pat_len + 1;
dfa->nodes = re_malloc (re_token_t, dfa->nodes_alloc);
@@ -834,14 +843,7 @@ init_dfa (dfa, pat_len)
if (BE (dfa->nodes == NULL || dfa->state_table == NULL
|| dfa->subexps == NULL, 0))
- {
- /* We don't bother to free anything which was allocated. Very
- soon the process will go down anyway. */
- dfa->subexps = NULL;
- dfa->state_table = NULL;
- dfa->nodes = NULL;
- return REG_ESPACE;
- }
+ return REG_ESPACE;
return REG_NOERROR;
}
@@ -871,7 +873,14 @@ free_workarea_compile (preg)
regex_t *preg;
{
re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
- free_bin_tree (dfa->str_tree);
+ bin_tree_storage_t *storage, *next;
+ for (storage = dfa->str_tree_storage; storage; storage = next)
+ {
+ next = storage->next;
+ re_free (storage);
+ }
+ dfa->str_tree_storage = NULL;
+ dfa->str_tree_storage_idx = BIN_TREE_STORAGE_SIZE;
dfa->str_tree = NULL;
re_free (dfa->org_indices);
dfa->org_indices = NULL;
@@ -1918,18 +1927,16 @@ parse (regexp, preg, syntax, err)
re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
bin_tree_t *tree, *eor, *root;
re_token_t current_token;
- int new_idx;
current_token = fetch_token (regexp, syntax | RE_CARET_ANCHORS_HERE);
tree = parse_reg_exp (regexp, preg, &current_token, syntax, 0, err);
if (BE (*err != REG_NOERROR && tree == NULL, 0))
return NULL;
- new_idx = re_dfa_add_node (dfa, current_token, 0);
- eor = create_tree (NULL, NULL, 0, new_idx);
+ eor = re_dfa_add_tree_node (dfa, NULL, NULL, current_token);
if (tree != NULL)
- root = create_tree (tree, eor, CONCAT, 0);
+ root = create_tree (dfa, tree, eor, CONCAT, 0);
else
root = eor;
- if (BE (new_idx == -1 || eor == NULL || root == NULL, 0))
+ if (BE (eor == NULL || root == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
@@ -1957,7 +1964,6 @@ parse_reg_exp (regexp, preg, token, syntax, nest, err)
{
re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
bin_tree_t *tree, *branch = NULL;
- int new_idx;
tree = parse_branch (regexp, preg, token, syntax, nest, err);
if (BE (*err != REG_NOERROR && tree == NULL, 0))
return NULL;
@@ -1965,22 +1971,18 @@ parse_reg_exp (regexp, preg, token, syntax, nest, err)
while (token->type == OP_ALT)
{
re_token_t alt_token = *token;
- new_idx = re_dfa_add_node (dfa, alt_token, 0);
*token = fetch_token (regexp, syntax | RE_CARET_ANCHORS_HERE);
if (token->type != OP_ALT && token->type != END_OF_RE
&& (nest == 0 || token->type != OP_CLOSE_SUBEXP))
{
branch = parse_branch (regexp, preg, token, syntax, nest, err);
if (BE (*err != REG_NOERROR && branch == NULL, 0))
- {
- free_bin_tree (tree);
- return NULL;
- }
+ return NULL;
}
else
branch = NULL;
- tree = create_tree (tree, branch, 0, new_idx);
- if (BE (new_idx == -1 || tree == NULL, 0))
+ tree = re_dfa_add_tree_node (dfa, tree, branch, alt_token);
+ if (BE (tree == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
@@ -2009,6 +2011,7 @@ parse_branch (regexp, preg, token, syntax, nest, err)
reg_errcode_t *err;
{
bin_tree_t *tree, *exp;
+ re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
tree = parse_expression (regexp, preg, token, syntax, nest, err);
if (BE (*err != REG_NOERROR && tree == NULL, 0))
return NULL;
@@ -2019,12 +2022,11 @@ parse_branch (regexp, preg, token, syntax, nest, err)
exp = parse_expression (regexp, preg, token, syntax, nest, err);
if (BE (*err != REG_NOERROR && exp == NULL, 0))
{
- free_bin_tree (tree);
return NULL;
}
if (tree != NULL && exp != NULL)
{
- tree = create_tree (tree, exp, CONCAT, 0);
+ tree = create_tree (dfa, tree, exp, CONCAT, 0);
if (tree == NULL)
{
*err = REG_ESPACE;
@@ -2055,13 +2057,11 @@ parse_expression (regexp, preg, token, syntax, nest, err)
{
re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
bin_tree_t *tree;
- int new_idx;
switch (token->type)
{
case CHARACTER:
- new_idx = re_dfa_add_node (dfa, *token, 0);
- tree = create_tree (NULL, NULL, 0, new_idx);
- if (BE (new_idx == -1 || tree == NULL, 0))
+ tree = re_dfa_add_tree_node (dfa, NULL, NULL, *token);
+ if (BE (tree == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
@@ -2074,10 +2074,9 @@ parse_expression (regexp, preg, token, syntax, nest, err)
{
bin_tree_t *mbc_remain;
*token = fetch_token (regexp, syntax);
- new_idx = re_dfa_add_node (dfa, *token, 0);
- mbc_remain = create_tree (NULL, NULL, 0, new_idx);
- tree = create_tree (tree, mbc_remain, CONCAT, 0);
- if (BE (new_idx == -1 || mbc_remain == NULL || tree == NULL, 0))
+ mbc_remain = re_dfa_add_tree_node (dfa, NULL, NULL, *token);
+ tree = create_tree (dfa, tree, mbc_remain, CONCAT, 0);
+ if (BE (mbc_remain == NULL || tree == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
@@ -2104,9 +2103,8 @@ parse_expression (regexp, preg, token, syntax, nest, err)
return NULL;
}
dfa->used_bkref_map |= 1 << (token->opr.idx - 1);
- new_idx = re_dfa_add_node (dfa, *token, 0);
- tree = create_tree (NULL, NULL, 0, new_idx);
- if (BE (new_idx == -1 || tree == NULL, 0))
+ tree = re_dfa_add_tree_node (dfa, NULL, NULL, *token);
+ if (BE (tree == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
@@ -2148,9 +2146,8 @@ parse_expression (regexp, preg, token, syntax, nest, err)
/* Then we can these characters as normal characters. */
token->type = CHARACTER;
- new_idx = re_dfa_add_node (dfa, *token, 0);
- tree = create_tree (NULL, NULL, 0, new_idx);
- if (BE (new_idx == -1 || tree == NULL, 0))
+ tree = re_dfa_add_tree_node (dfa, NULL, NULL, *token);
+ if (BE (tree == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
@@ -2166,19 +2163,13 @@ parse_expression (regexp, preg, token, syntax, nest, err)
if (token->opr.ctx_type == WORD_DELIM)
{
bin_tree_t *tree_first, *tree_last;
- int idx_first, idx_last;
token->opr.ctx_type = WORD_FIRST;
- idx_first = re_dfa_add_node (dfa, *token, 0);
- tree_first = create_tree (NULL, NULL, 0, idx_first);
+ tree_first = re_dfa_add_tree_node (dfa, NULL, NULL, *token);
token->opr.ctx_type = WORD_LAST;
- idx_last = re_dfa_add_node (dfa, *token, 0);
- tree_last = create_tree (NULL, NULL, 0, idx_last);
+ tree_last = re_dfa_add_tree_node (dfa, NULL, NULL, *token);
token->type = OP_ALT;
- new_idx = re_dfa_add_node (dfa, *token, 0);
- tree = create_tree (tree_first, tree_last, 0, new_idx);
- if (BE (idx_first == -1 || idx_last == -1 || new_idx == -1
- || tree_first == NULL || tree_last == NULL
- || tree == NULL, 0))
+ tree = re_dfa_add_tree_node (dfa, tree_first, tree_last, *token);
+ if (BE (tree_first == NULL || tree_last == NULL || tree == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
@@ -2186,9 +2177,8 @@ parse_expression (regexp, preg, token, syntax, nest, err)
}
else
{
- new_idx = re_dfa_add_node (dfa, *token, 0);
- tree = create_tree (NULL, NULL, 0, new_idx);
- if (BE (new_idx == -1 || tree == NULL, 0))
+ tree = re_dfa_add_tree_node (dfa, NULL, NULL, *token);
+ if (BE (tree == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
@@ -2201,9 +2191,8 @@ parse_expression (regexp, preg, token, syntax, nest, err)
*token = fetch_token (regexp, syntax);
return tree;
case OP_PERIOD:
- new_idx = re_dfa_add_node (dfa, *token, 0);
- tree = create_tree (NULL, NULL, 0, new_idx);
- if (BE (new_idx == -1 || tree == NULL, 0))
+ tree = re_dfa_add_tree_node (dfa, NULL, NULL, *token);
+ if (BE (tree == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
@@ -2285,7 +2274,6 @@ parse_sub_exp (regexp, preg, token, syntax, nest, err)
re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
bin_tree_t *tree, *left_par, *right_par;
size_t cur_nsub;
- int new_idx;
cur_nsub = preg->re_nsub++;
if (dfa->subexps_alloc < preg->re_nsub)
{
@@ -2303,14 +2291,13 @@ parse_sub_exp (regexp, preg, token, syntax, nest, err)
dfa->subexps[cur_nsub].start = dfa->nodes_len;
dfa->subexps[cur_nsub].end = -1;
- new_idx = re_dfa_add_node (dfa, *token, 0);
- left_par = create_tree (NULL, NULL, 0, new_idx);
- if (BE (new_idx == -1 || left_par == NULL, 0))
+ left_par = re_dfa_add_tree_node (dfa, NULL, NULL, *token);
+ if (BE (left_par == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
}
- dfa->nodes[new_idx].opr.idx = cur_nsub;
+ dfa->nodes[left_par->node_idx].opr.idx = cur_nsub;
*token = fetch_token (regexp, syntax | RE_CARET_ANCHORS_HERE);
/* The subexpression may be a null string. */
@@ -2324,22 +2311,20 @@ parse_sub_exp (regexp, preg, token, syntax, nest, err)
}
if (BE (token->type != OP_CLOSE_SUBEXP, 0))
{
- free_bin_tree (tree);
*err = REG_EPAREN;
return NULL;
}
- new_idx = re_dfa_add_node (dfa, *token, 0);
+ right_par = re_dfa_add_tree_node (dfa, NULL, NULL, *token);
dfa->subexps[cur_nsub].end = dfa->nodes_len;
- right_par = create_tree (NULL, NULL, 0, new_idx);
tree = ((tree == NULL) ? right_par
- : create_tree (tree, right_par, CONCAT, 0));
- tree = create_tree (left_par, tree, CONCAT, 0);
- if (BE (new_idx == -1 || right_par == NULL || tree == NULL, 0))
+ : create_tree (dfa, tree, right_par, CONCAT, 0));
+ tree = create_tree (dfa, left_par, tree, CONCAT, 0);
+ if (BE (right_par == NULL || tree == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
}
- dfa->nodes[new_idx].opr.idx = cur_nsub;
+ dfa->nodes[right_par->node_idx].opr.idx = cur_nsub;
return tree;
}
@@ -2357,7 +2342,7 @@ parse_dup_op (dup_elem, regexp, dfa, token, syntax, err)
{
re_token_t dup_token;
bin_tree_t *tree = dup_elem, *work_tree;
- int new_idx, start_idx = re_string_cur_idx (regexp);
+ int start_idx = re_string_cur_idx (regexp);
re_token_t start_token = *token;
if (token->type == OP_OPEN_DUP_NUM)
{
@@ -2394,7 +2379,6 @@ parse_dup_op (dup_elem, regexp, dfa, token, syntax, err)
{
/* We treat "<re>{0}" and "<re>{0,0}" as null string. */
*token = fetch_token (regexp, syntax);
- free_bin_tree (dup_elem);
return NULL;
}
@@ -2404,7 +2388,7 @@ parse_dup_op (dup_elem, regexp, dfa, token, syntax, err)
if (i != 0)
{
work_tree = duplicate_tree (elem, dfa);
- tree = create_tree (tree, work_tree, CONCAT, 0);
+ tree = create_tree (dfa, tree, work_tree, CONCAT, 0);
if (BE (work_tree == NULL || tree == NULL, 0))
goto parse_dup_op_espace;
}
@@ -2416,18 +2400,15 @@ parse_dup_op (dup_elem, regexp, dfa, token, syntax, err)
if (start > 0)
{
elem = duplicate_tree (elem, dfa);
- new_idx = re_dfa_add_node (dfa, dup_token, 0);
- work_tree = create_tree (elem, NULL, 0, new_idx);
- tree = create_tree (tree, work_tree, CONCAT, 0);
- if (BE (elem == NULL || new_idx == -1 || work_tree == NULL
- || tree == NULL, 0))
+ work_tree = re_dfa_add_tree_node (dfa, elem, NULL, dup_token);
+ tree = create_tree (dfa, tree, work_tree, CONCAT, 0);
+ if (BE (elem == NULL || work_tree == NULL || tree == NULL, 0))
goto parse_dup_op_espace;
}
else
{
- new_idx = re_dfa_add_node (dfa, dup_token, 0);
- tree = create_tree (elem, NULL, 0, new_idx);
- if (BE (new_idx == -1 || tree == NULL, 0))
+ tree = re_dfa_add_tree_node (dfa, elem, NULL, dup_token);
+ if (BE (tree == NULL, 0))
goto parse_dup_op_espace;
}
}
@@ -2444,23 +2425,21 @@ parse_dup_op (dup_elem, regexp, dfa, token, syntax, err)
if (start > 0)
{
elem = duplicate_tree (elem, dfa);
- new_idx = re_dfa_add_node (dfa, dup_token, 0);
- elem = create_tree (elem, NULL, 0, new_idx);
- tree = create_tree (tree, elem, CONCAT, 0);
- if (BE (elem == NULL || new_idx == -1 || tree == NULL, 0))
+ elem = re_dfa_add_tree_node (dfa, elem, NULL, dup_token);
+ tree = create_tree (dfa, tree, elem, CONCAT, 0);
+ if (BE (elem == NULL || tree == NULL, 0))
goto parse_dup_op_espace;
}
else
{
- new_idx = re_dfa_add_node (dfa, dup_token, 0);
- tree = elem = create_tree (elem, NULL, 0, new_idx);
- if (BE (new_idx == -1 || tree == NULL, 0))
+ tree = elem = re_dfa_add_tree_node (dfa, elem, NULL, dup_token);
+ if (BE (tree == NULL, 0))
goto parse_dup_op_espace;
}
for (i = 1; i < end - start; ++i)
{
work_tree = duplicate_tree (elem, dfa);
- tree = create_tree (tree, work_tree, CONCAT, 0);
+ tree = create_tree (dfa, tree, work_tree, CONCAT, 0);
if (BE (work_tree == NULL || tree == NULL, 0))
{
*err = REG_ESPACE;
@@ -2471,9 +2450,8 @@ parse_dup_op (dup_elem, regexp, dfa, token, syntax, err)
}
else
{
- new_idx = re_dfa_add_node (dfa, *token, 0);
- tree = create_tree (tree, NULL, 0, new_idx);
- if (BE (new_idx == -1 || tree == NULL, 0))
+ tree = re_dfa_add_tree_node (dfa, tree, NULL, *token);
+ if (BE (tree == NULL, 0))
{
*err = REG_ESPACE;
return NULL;
@@ -2483,7 +2461,6 @@ parse_dup_op (dup_elem, regexp, dfa, token, syntax, err)
return tree;
parse_dup_op_espace:
- free_bin_tree (tree);
*err = REG_ESPACE;
return NULL;
@@ -2938,7 +2915,7 @@ parse_bracket_exp (regexp, dfa, token, syntax, err)
int non_match = 0;
#endif /* not RE_ENABLE_I18N */
bin_tree_t *work_tree;
- int token_len, new_idx;
+ int token_len;
#ifdef _LIBC
collseqmb = (const unsigned char *)
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQMB);
@@ -3155,9 +3132,8 @@ parse_bracket_exp (regexp, dfa, token, syntax, err)
/* Build a tree for simple bracket. */
br_token.type = SIMPLE_BRACKET;
br_token.opr.sbcset = sbcset;
- new_idx = re_dfa_add_node (dfa, br_token, 0);
- work_tree = create_tree (NULL, NULL, 0, new_idx);
- if (BE (new_idx == -1 || work_tree == NULL, 0))
+ work_tree = re_dfa_add_tree_node (dfa, NULL, NULL, br_token);
+ if (BE (work_tree == NULL, 0))
goto parse_bracket_exp_espace;
#ifdef RE_ENABLE_I18N
@@ -3179,21 +3155,19 @@ parse_bracket_exp (regexp, dfa, token, syntax, err)
if (sbc_idx == BITSET_UINTS)
{
re_free (sbcset);
- dfa->nodes[new_idx].type = COMPLEX_BRACKET;
- dfa->nodes[new_idx].opr.mbcset = mbcset;
+ dfa->nodes[work_tree->node_idx].type = COMPLEX_BRACKET;
+ dfa->nodes[work_tree->node_idx].opr.mbcset = mbcset;
return work_tree;
}
br_token.type = COMPLEX_BRACKET;
br_token.opr.mbcset = mbcset;
- new_idx = re_dfa_add_node (dfa, br_token, 0);
- mbc_tree = create_tree (NULL, NULL, 0, new_idx);
- if (BE (new_idx == -1 || mbc_tree == NULL, 0))
+ mbc_tree = re_dfa_add_tree_node (dfa, NULL, NULL, br_token);
+ if (BE (mbc_tree == NULL, 0))
goto parse_bracket_exp_espace;
/* Then join them by ALT node. */
alt_token.type = OP_ALT;
- new_idx = re_dfa_add_node (dfa, alt_token, 0);
- work_tree = create_tree (work_tree, mbc_tree, 0, new_idx);
- if (BE (new_idx != -1 && mbc_tree != NULL, 1))
+ work_tree = re_dfa_add_tree_node (dfa, work_tree, mbc_tree, alt_token);
+ if (BE (mbc_tree != NULL, 1))
return work_tree;
}
else
@@ -3497,7 +3471,6 @@ build_charclass_op (dfa, trans, class_name, extra, not, err)
reg_errcode_t ret;
re_token_t br_token;
bin_tree_t *tree;
- int new_idx;
sbcset = (re_bitset_ptr_t) calloc (sizeof (unsigned int), BITSET_UINTS);
#ifdef RE_ENABLE_I18N
@@ -3563,9 +3536,8 @@ build_charclass_op (dfa, trans, class_name, extra, not, err)
/* Build a tree for simple bracket. */
br_token.type = SIMPLE_BRACKET;
br_token.opr.sbcset = sbcset;
- new_idx = re_dfa_add_node (dfa, br_token, 0);
- tree = create_tree (NULL, NULL, 0, new_idx);
- if (BE (new_idx == -1 || tree == NULL, 0))
+ tree = re_dfa_add_tree_node (dfa, NULL, NULL, br_token);
+ if (BE (tree == NULL, 0))
goto build_word_op_espace;
#ifdef RE_ENABLE_I18N
@@ -3577,15 +3549,13 @@ build_charclass_op (dfa, trans, class_name, extra, not, err)
br_token.type = COMPLEX_BRACKET;
br_token.opr.mbcset = mbcset;
dfa->has_mb_node = 1;
- new_idx = re_dfa_add_node (dfa, br_token, 0);
- mbc_tree = create_tree (NULL, NULL, 0, new_idx);
- if (BE (new_idx == -1 || mbc_tree == NULL, 0))
+ mbc_tree = re_dfa_add_tree_node (dfa, NULL, NULL, br_token);
+ if (BE (mbc_tree == NULL, 0))
goto build_word_op_espace;
/* Then join them by ALT node. */
alt_token.type = OP_ALT;
- new_idx = re_dfa_add_node (dfa, alt_token, 0);
- tree = create_tree (tree, mbc_tree, 0, new_idx);
- if (BE (new_idx != -1 && mbc_tree != NULL, 1))
+ tree = re_dfa_add_tree_node (dfa, tree, mbc_tree, alt_token);
+ if (BE (mbc_tree != NULL, 1))
return tree;
}
else
@@ -3652,24 +3622,29 @@ free_charset (re_charset_t *cset)
/* Functions for binary tree operation. */
-/* Create a node of tree.
- Note: This function automatically free left and right if malloc fails. */
+/* Create a tree node. */
static bin_tree_t *
-create_tree (left, right, type, index)
+create_tree (dfa, left, right, type, index)
+ re_dfa_t *dfa;
bin_tree_t *left;
bin_tree_t *right;
re_token_type_t type;
int index;
{
bin_tree_t *tree;
- tree = re_malloc (bin_tree_t, 1);
- if (BE (tree == NULL, 0))
+ if (BE (dfa->str_tree_storage_idx == BIN_TREE_STORAGE_SIZE, 0))
{
- free_bin_tree (left);
- free_bin_tree (right);
- return NULL;
+ bin_tree_storage_t *storage = re_malloc (bin_tree_storage_t, 1);
+
+ if (storage == NULL)
+ return NULL;
+ storage->next = dfa->str_tree_storage;
+ dfa->str_tree_storage = storage;
+ dfa->str_tree_storage_idx = 0;
}
+ tree = &dfa->str_tree_storage->data[dfa->str_tree_storage_idx++];
+
tree->parent = NULL;
tree->left = left;
tree->right = right;
@@ -3686,20 +3661,24 @@ create_tree (left, right, type, index)
return tree;
}
-/* Free the sub tree pointed by TREE. */
+/* Create both a DFA node and a tree for it. */
-static void
-free_bin_tree (tree)
- bin_tree_t *tree;
-{
- if (tree == NULL)
- return;
- /*re_node_set_free (&tree->eclosure);*/
- free_bin_tree (tree->left);
- free_bin_tree (tree->right);
- re_free (tree);
+static bin_tree_t *
+re_dfa_add_tree_node (dfa, left, right, token)
+ re_dfa_t *dfa;
+ bin_tree_t *left;
+ bin_tree_t *right;
+ re_token_t token;
+{
+ int new_idx = re_dfa_add_node (dfa, token, 0);
+
+ if (new_idx == -1)
+ return NULL;
+
+ return create_tree (dfa, left, right, 0, new_idx);
}
+
/* Duplicate the node SRC, and return new node. */
static bin_tree_t *
@@ -3723,10 +3702,7 @@ duplicate_tree (src, dfa)
{
right = duplicate_tree (src->right, dfa);
if (right == NULL)
- {
- free_bin_tree (left);
- return NULL;
- }
+ return NULL;
}
/* At last, duplicate itself. */
@@ -3735,20 +3711,11 @@ duplicate_tree (src, dfa)
new_node_idx = re_dfa_add_node (dfa, dfa->nodes[src->node_idx], 0);
dfa->nodes[new_node_idx].duplicated = 1;
if (BE (new_node_idx == -1, 0))
- {
- free_bin_tree (left);
- free_bin_tree (right);
- return NULL;
- }
+ return NULL;
}
else
new_node_idx = src->type;
- new_tree = create_tree (left, right, src->type, new_node_idx);
- if (BE (new_tree == NULL, 0))
- {
- free_bin_tree (left);
- free_bin_tree (right);
- }
+ new_tree = create_tree (dfa, left, right, src->type, new_node_idx);
return new_tree;
}
diff --git a/posix/regex_internal.h b/posix/regex_internal.h
index 0092b25c13..628dc94066 100644
--- a/posix/regex_internal.h
+++ b/posix/regex_internal.h
@@ -412,6 +412,15 @@ struct bin_tree_t
};
typedef struct bin_tree_t bin_tree_t;
+#define BIN_TREE_STORAGE_SIZE \
+ ((1024 - sizeof (void *)) / sizeof (bin_tree_t))
+
+struct bin_tree_storage_t
+{
+ struct bin_tree_storage_t *next;
+ bin_tree_t data[BIN_TREE_STORAGE_SIZE];
+};
+typedef struct bin_tree_storage_t bin_tree_storage_t;
#define CONTEXT_WORD 1
#define CONTEXT_NEWLINE (CONTEXT_WORD << 1)
@@ -578,7 +587,6 @@ struct re_dfa_t
re_token_t *nodes;
int nodes_alloc;
int nodes_len;
- bin_tree_t *str_tree;
int *nexts;
int *org_indices;
re_node_set *edests;
@@ -589,6 +597,9 @@ struct re_dfa_t
re_dfastate_t *init_state_word;
re_dfastate_t *init_state_nl;
re_dfastate_t *init_state_begbuf;
+ bin_tree_t *str_tree;
+ bin_tree_storage_t *str_tree_storage;
+ int str_tree_storage_idx;
/* number of subexpressions `re_nsub' is in regex_t. */
int subexps_alloc;
@@ -598,9 +609,6 @@ struct re_dfa_t
int nbackref; /* The number of backreference in this dfa. */
/* Bitmap expressing which backreference is used. */
unsigned int used_bkref_map;
-#ifdef DEBUG
- char* re_str;
-#endif
unsigned int has_plural_match : 1;
/* If this dfa has "multibyte node", which is a backreference or
a node which can accept multibyte character or multi character
@@ -609,6 +617,9 @@ struct re_dfa_t
unsigned int is_utf8 : 1;
unsigned int map_notascii : 1;
int mb_cur_max;
+#ifdef DEBUG
+ char* re_str;
+#endif
};
#ifndef RE_NO_INTERNAL_PROTOTYPES
diff --git a/posix/regexec.c b/posix/regexec.c
index 03b97e883c..4688c9babb 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -3840,7 +3840,7 @@ extend_buffers (mctx)
/* And double the length of state_log. */
re_dfastate_t **new_array;
new_array = re_realloc (mctx->state_log, re_dfastate_t *,
- pstr->bufs_len * 2);
+ pstr->bufs_len + 1);
if (BE (new_array == NULL, 0))
return REG_ESPACE;
mctx->state_log = new_array;
@@ -3866,8 +3866,6 @@ extend_buffers (mctx)
{
if (pstr->trans != NULL)
re_string_translate_buffer (pstr);
- else
- pstr->valid_len = pstr->bufs_len;
}
}
return REG_NOERROR;
diff --git a/posix/tst-rxspencer.c b/posix/tst-rxspencer.c
index cddb228f1f..45bafda7a7 100644
--- a/posix/tst-rxspencer.c
+++ b/posix/tst-rxspencer.c
@@ -384,6 +384,8 @@ main (int argc, char **argv)
{NULL, 0, NULL, 0 }
};
+ mtrace ();
+
while (getopt_long (argc, argv, "", options, NULL) >= 0);
if (optind + 1 != argc)
@@ -510,6 +512,7 @@ main (int argc, char **argv)
}
}
+ free (line);
fclose (f);
return ret;
}