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authorUlrich Drepper <drepper@redhat.com>2005-09-07 01:15:33 +0000
committerUlrich Drepper <drepper@redhat.com>2005-09-07 01:15:33 +0000
commit01ed6ceb7c440f0695726463ee9ee307921ea97e (patch)
treeeda9aef2d63fd0c0f39e51208e7bb9d463d65661 /posix
parent2d87db5b5341bd6b714f175c1c268b7136444a71 (diff)
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* posix/regex_internal.c (re_string_reconstruct): Avoid calling
mbrtowc for very simple UTF-8 case. 2005-09-01 Paul Eggert <eggert@cs.ucla.edu> * posix/regex_internal.c (build_wcs_upper_buffer): Fix portability bugs in int versus size_t comparisons. 2005-09-06 Ulrich Drepper <drepper@redhat.com> * posix/regex_internal.c (re_acquire_state): Make DFA pointer arg a pointer-to-const. (re_acquire_state_context): Likewise. * posix/regex_internal.h: Adjust prototypes. 2005-08-31 Jim Meyering <jim@meyering.net> * posix/regcomp.c (search_duplicated_node): Make first pointer arg a pointer-to-const. * posix/regex_internal.c (create_ci_newstate, create_cd_newstate, register_state): Likewise. * posix/regexec.c (search_cur_bkref_entry, check_dst_limits): (check_dst_limits_calc_pos_1, check_dst_limits_calc_pos): (group_nodes_into_DFAstates): Likewise. * posix/regexec.c (re_search_internal): Simplify update of rm_so and rm_eo by replacing "if (A == B) A += C - B;" with the equivalent of "if (A == B) A = C;". 2005-09-06 Ulrich Drepper <drepper@redhat.com> * posix/regcomp.c (re_compile_internal): Change third parameter type to size_t. (init_dfa): Likewise. Make sure that arithmetic on pat_len doesn't overflow. * posix/regex_internal.h (struct re_dfa_t): Change type of nodes_alloc and nodes_len to size_t. * posix/regex_internal.c (re_dfa_add_node): Use size_t as type for new_nodes_alloc. Check for overflow. 2005-08-31 Paul Eggert <eggert@cs.ucla.edu> * posix/regcomp.c (re_compile_fastmap_iter, init_dfa, init_word_char): (optimize_subexps, lower_subexp): Don't assume 1<<31 has defined behavior on hosts with 32-bit int, since the signed shift might overflow. Use 1u<<31 instead. * posix/regex_internal.h (bitset_set, bitset_clear, bitset_contain): Likewise. * posix/regexec.c (check_dst_limits_calc_pos_1): Likewise. (check_subexp_matching_top): Likewise. * posix/regcomp.c (optimize_subexps, lower_subexp): Use CHAR_BIT rather than 8, for clarity. * posix/regexec.c (check_dst_limits_calc_pos_1): (check_subexp_matching_top): Likewise. * posix/regcomp.c (init_dfa): Make table_size unsigned, so that we don't have to worry about portability issues when shifting it left. Remove no-longer-needed test for table_size > 0. * posix/regcomp.c (parse_sub_exp): Do not shift more bits than there are in a word, as the resulting behavior is undefined. * posix/regexec.c (check_dst_limits_calc_pos_1): Likewise; in one case, a <= should have been an <, and in another case the whole test was missing. * posix/regex_internal.h (BYTE_BITS): Remove. All uses changed to the standard name CHAR_BIT.
Diffstat (limited to 'posix')
-rw-r--r--posix/regcomp.c39
-rw-r--r--posix/regex_internal.c120
-rw-r--r--posix/regex_internal.h22
-rw-r--r--posix/regexec.c74
4 files changed, 145 insertions, 110 deletions
diff --git a/posix/regcomp.c b/posix/regcomp.c
index d8205331d7..c93f79ea24 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -19,11 +19,11 @@
02111-1307 USA. */
static reg_errcode_t re_compile_internal (regex_t *preg, const char * pattern,
- int length, reg_syntax_t syntax);
+ size_t length, reg_syntax_t syntax);
static void re_compile_fastmap_iter (regex_t *bufp,
const re_dfastate_t *init_state,
char *fastmap);
-static reg_errcode_t init_dfa (re_dfa_t *dfa, int pat_len);
+static reg_errcode_t init_dfa (re_dfa_t *dfa, size_t pat_len);
static void init_word_char (re_dfa_t *dfa);
#ifdef RE_ENABLE_I18N
static void free_charset (re_charset_t *cset);
@@ -51,7 +51,7 @@ static reg_errcode_t duplicate_node_closure (re_dfa_t *dfa, int top_org_node,
int top_clone_node, int root_node,
unsigned int constraint);
static int duplicate_node (re_dfa_t *dfa, int org_idx, unsigned int constraint);
-static int search_duplicated_node (re_dfa_t *dfa, int org_node,
+static int search_duplicated_node (const re_dfa_t *dfa, int org_node,
unsigned int constraint);
static reg_errcode_t calc_eclosure (re_dfa_t *dfa);
static reg_errcode_t calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa,
@@ -368,7 +368,7 @@ re_compile_fastmap_iter (bufp, init_state, fastmap)
int i, j, ch;
for (i = 0, ch = 0; i < BITSET_UINTS; ++i)
for (j = 0; j < UINT_BITS; ++j, ++ch)
- if (dfa->nodes[node].opr.sbcset[i] & (1 << j))
+ if (dfa->nodes[node].opr.sbcset[i] & (1u << j))
re_set_fastmap (fastmap, icase, ch);
}
#ifdef RE_ENABLE_I18N
@@ -740,7 +740,7 @@ static reg_errcode_t
re_compile_internal (preg, pattern, length, syntax)
regex_t *preg;
const char * pattern;
- int length;
+ size_t length;
reg_syntax_t syntax;
{
reg_errcode_t err = REG_NOERROR;
@@ -781,6 +781,7 @@ re_compile_internal (preg, pattern, length, syntax)
return err;
}
#ifdef DEBUG
+ /* Note: length+1 will not overflow since it is checked in init_dfa. */
dfa->re_str = re_malloc (char, length + 1);
strncpy (dfa->re_str, pattern, length + 1);
#endif
@@ -840,9 +841,9 @@ re_compile_internal (preg, pattern, length, syntax)
static reg_errcode_t
init_dfa (dfa, pat_len)
re_dfa_t *dfa;
- int pat_len;
+ size_t pat_len;
{
- int table_size;
+ unsigned int table_size;
#ifndef _LIBC
char *codeset_name;
#endif
@@ -852,11 +853,15 @@ init_dfa (dfa, pat_len)
/* Force allocation of str_tree_storage the first time. */
dfa->str_tree_storage_idx = BIN_TREE_STORAGE_SIZE;
+ /* Avoid overflows. */
+ if (pat_len == SIZE_MAX)
+ return REG_ESPACE;
+
dfa->nodes_alloc = pat_len + 1;
dfa->nodes = re_malloc (re_token_t, dfa->nodes_alloc);
/* table_size = 2 ^ ceil(log pat_len) */
- for (table_size = 1; table_size > 0; table_size <<= 1)
+ for (table_size = 1; ; table_size <<= 1)
if (table_size > pat_len)
break;
@@ -916,7 +921,7 @@ init_dfa (dfa, pat_len)
{
wint_t wch = __btowc (ch);
if (wch != WEOF)
- dfa->sb_char[i] |= 1 << j;
+ dfa->sb_char[i] |= 1u << j;
# ifndef _LIBC
if (isascii (ch) && wch != ch)
dfa->map_notascii = 1;
@@ -944,7 +949,7 @@ init_word_char (dfa)
for (i = 0, ch = 0; i < BITSET_UINTS; ++i)
for (j = 0; j < UINT_BITS; ++j, ++ch)
if (isalnum (ch) || ch == '_')
- dfa->word_char[i] |= 1 << j;
+ dfa->word_char[i] |= 1u << j;
}
/* Free the work area which are only used while compiling. */
@@ -1277,8 +1282,8 @@ optimize_subexps (extra, node)
node->left->parent = node;
dfa->subexp_map[other_idx] = dfa->subexp_map[node->token.opr.idx];
- if (other_idx < 8 * sizeof (dfa->used_bkref_map))
- dfa->used_bkref_map &= ~(1 << other_idx);
+ if (other_idx < CHAR_BIT * sizeof dfa->used_bkref_map)
+ dfa->used_bkref_map &= ~(1u << other_idx);
}
return REG_NOERROR;
@@ -1326,8 +1331,8 @@ lower_subexp (err, preg, node)
very common, so we do not lose much. An example that triggers
this case is the sed "script" /\(\)/x. */
&& node->left != NULL
- && (node->token.opr.idx >= 8 * sizeof (dfa->used_bkref_map)
- || !(dfa->used_bkref_map & (1 << node->token.opr.idx))))
+ && (node->token.opr.idx >= CHAR_BIT * sizeof dfa->used_bkref_map
+ || !(dfa->used_bkref_map & (1u << node->token.opr.idx))))
return node->left;
/* Convert the SUBEXP node to the concatenation of an
@@ -1574,7 +1579,7 @@ duplicate_node_closure (dfa, top_org_node, top_clone_node, root_node,
static int
search_duplicated_node (dfa, org_node, constraint)
- re_dfa_t *dfa;
+ const re_dfa_t *dfa;
int org_node;
unsigned int constraint;
{
@@ -2492,7 +2497,9 @@ parse_sub_exp (regexp, preg, token, syntax, nest, err)
if (BE (*err != REG_NOERROR, 0))
return NULL;
}
- dfa->completed_bkref_map |= 1 << cur_nsub;
+
+ if (cur_nsub <= '9' - '1')
+ dfa->completed_bkref_map |= 1 << cur_nsub;
tree = create_tree (dfa, tree, NULL, SUBEXP);
if (BE (tree == NULL, 0))
diff --git a/posix/regex_internal.c b/posix/regex_internal.c
index 821ed7f45f..240e8872b3 100644
--- a/posix/regex_internal.c
+++ b/posix/regex_internal.c
@@ -26,12 +26,13 @@ static void re_string_construct_common (const char *str, int len,
static int re_string_skip_chars (re_string_t *pstr, int new_raw_idx,
wint_t *last_wc) internal_function;
#endif /* RE_ENABLE_I18N */
-static reg_errcode_t register_state (re_dfa_t *dfa, re_dfastate_t *newstate,
+static reg_errcode_t register_state (const re_dfa_t *dfa,
+ re_dfastate_t *newstate,
unsigned int hash) internal_function;
-static re_dfastate_t *create_ci_newstate (re_dfa_t *dfa,
+static re_dfastate_t *create_ci_newstate (const re_dfa_t *dfa,
const re_node_set *nodes,
unsigned int hash) internal_function;
-static re_dfastate_t *create_cd_newstate (re_dfa_t *dfa,
+static re_dfastate_t *create_cd_newstate (const re_dfa_t *dfa,
const re_node_set *nodes,
unsigned int context,
unsigned int hash) internal_function;
@@ -654,37 +655,50 @@ re_string_reconstruct (pstr, idx, eflags)
byte other than 0x80 - 0xbf. */
raw = pstr->raw_mbs + pstr->raw_mbs_idx;
end = raw + (offset - pstr->mb_cur_max);
- for (p = raw + offset - 1; p >= end; --p)
- if ((*p & 0xc0) != 0x80)
- {
- mbstate_t cur_state;
- wchar_t wc2;
- int mlen = raw + pstr->len - p;
- unsigned char buf[6];
-
- q = p;
- if (BE (pstr->trans != NULL, 0))
- {
- int i = mlen < 6 ? mlen : 6;
- while (--i >= 0)
- buf[i] = pstr->trans[p[i]];
- q = buf;
- }
- /* XXX Don't use mbrtowc, we know which conversion
- to use (UTF-8 -> UCS4). */
- memset (&cur_state, 0, sizeof (cur_state));
- mlen = (mbrtowc (&wc2, (const char *) p, mlen,
- &cur_state)
- - (raw + offset - p));
- if (mlen >= 0)
- {
- memset (&pstr->cur_state, '\0',
- sizeof (mbstate_t));
- pstr->valid_len = mlen;
- wc = wc2;
- }
- break;
- }
+ p = raw + offset - 1;
+#ifdef _LIBC
+ /* We know the wchar_t encoding is UCS4, so for the simple
+ case, ASCII characters, skip the conversion step. */
+ if (isascii (*p) && BE (pstr->trans == NULL, 1))
+ {
+ memset (&pstr->cur_state, '\0', sizeof (mbstate_t));
+ pstr->valid_len = 0;
+ wc = (wchar_t) *p;
+ }
+ else
+#endif
+ for (; p >= end; --p)
+ if ((*p & 0xc0) != 0x80)
+ {
+ mbstate_t cur_state;
+ wchar_t wc2;
+ int mlen = raw + pstr->len - p;
+ unsigned char buf[6];
+ size_t mbclen;
+
+ q = p;
+ if (BE (pstr->trans != NULL, 0))
+ {
+ int i = mlen < 6 ? mlen : 6;
+ while (--i >= 0)
+ buf[i] = pstr->trans[p[i]];
+ q = buf;
+ }
+ /* XXX Don't use mbrtowc, we know which conversion
+ to use (UTF-8 -> UCS4). */
+ memset (&cur_state, 0, sizeof (cur_state));
+ mbclen = mbrtowc (&wc2, (const char *) p, mlen,
+ &cur_state);
+ if (raw + offset - p <= mbclen
+ && mbclen < (size_t) -2)
+ {
+ memset (&pstr->cur_state, '\0',
+ sizeof (mbstate_t));
+ pstr->valid_len = mbclen - (raw + offset - p);
+ wc = wc2;
+ }
+ break;
+ }
}
if (wc == WEOF)
@@ -738,15 +752,15 @@ re_string_reconstruct (pstr, idx, eflags)
}
else
#endif /* RE_ENABLE_I18N */
- if (BE (pstr->mbs_allocated, 0))
- {
- if (pstr->icase)
- build_upper_buffer (pstr);
- else if (pstr->trans != NULL)
- re_string_translate_buffer (pstr);
- }
- else
- pstr->valid_len = pstr->len;
+ if (BE (pstr->mbs_allocated, 0))
+ {
+ if (pstr->icase)
+ build_upper_buffer (pstr);
+ else if (pstr->trans != NULL)
+ re_string_translate_buffer (pstr);
+ }
+ else
+ pstr->valid_len = pstr->len;
pstr->cur_idx = 0;
return REG_NOERROR;
@@ -1345,12 +1359,16 @@ re_dfa_add_node (dfa, token)
int type = token.type;
if (BE (dfa->nodes_len >= dfa->nodes_alloc, 0))
{
- int new_nodes_alloc = dfa->nodes_alloc * 2;
+ size_t new_nodes_alloc = dfa->nodes_alloc * 2;
int *new_nexts, *new_indices;
re_node_set *new_edests, *new_eclosures;
+ re_token_t *new_nodes;
+
+ /* Avoid overflows. */
+ if (BE (new_nodes_alloc < dfa->nodes_alloc, 0))
+ return -1;
- re_token_t *new_nodes = re_realloc (dfa->nodes, re_token_t,
- new_nodes_alloc);
+ new_nodes = re_realloc (dfa->nodes, re_token_t, new_nodes_alloc);
if (BE (new_nodes == NULL, 0))
return -1;
dfa->nodes = new_nodes;
@@ -1403,7 +1421,7 @@ calc_state_hash (nodes, context)
static re_dfastate_t*
re_acquire_state (err, dfa, nodes)
reg_errcode_t *err;
- re_dfa_t *dfa;
+ const re_dfa_t *dfa;
const re_node_set *nodes;
{
unsigned int hash;
@@ -1448,7 +1466,7 @@ re_acquire_state (err, dfa, nodes)
static re_dfastate_t*
re_acquire_state_context (err, dfa, nodes, context)
reg_errcode_t *err;
- re_dfa_t *dfa;
+ const re_dfa_t *dfa;
const re_node_set *nodes;
unsigned int context;
{
@@ -1486,7 +1504,7 @@ re_acquire_state_context (err, dfa, nodes, context)
static reg_errcode_t
register_state (dfa, newstate, hash)
- re_dfa_t *dfa;
+ const re_dfa_t *dfa;
re_dfastate_t *newstate;
unsigned int hash;
{
@@ -1525,7 +1543,7 @@ register_state (dfa, newstate, hash)
static re_dfastate_t *
create_ci_newstate (dfa, nodes, hash)
- re_dfa_t *dfa;
+ const re_dfa_t *dfa;
const re_node_set *nodes;
unsigned int hash;
{
@@ -1576,7 +1594,7 @@ create_ci_newstate (dfa, nodes, hash)
static re_dfastate_t *
create_cd_newstate (dfa, nodes, context, hash)
- re_dfa_t *dfa;
+ const re_dfa_t *dfa;
const re_node_set *nodes;
unsigned int context, hash;
{
diff --git a/posix/regex_internal.h b/posix/regex_internal.h
index cdaa8fcfde..4d6a7a8be2 100644
--- a/posix/regex_internal.h
+++ b/posix/regex_internal.h
@@ -91,8 +91,6 @@
# define inline
#endif
-/* Number of bits in a byte. */
-#define BYTE_BITS 8
/* Number of single byte character. */
#define SBC_MAX 256
@@ -123,16 +121,16 @@ extern const char __re_error_msgid[] attribute_hidden;
extern const size_t __re_error_msgid_idx[] attribute_hidden;
/* Number of bits in an unsinged int. */
-#define UINT_BITS (sizeof (unsigned int) * BYTE_BITS)
+#define UINT_BITS (sizeof (unsigned int) * CHAR_BIT)
/* Number of unsigned int in an bit_set. */
#define BITSET_UINTS ((SBC_MAX + UINT_BITS - 1) / UINT_BITS)
typedef unsigned int bitset[BITSET_UINTS];
typedef unsigned int *re_bitset_ptr_t;
typedef const unsigned int *re_const_bitset_ptr_t;
-#define bitset_set(set,i) (set[i / UINT_BITS] |= 1 << i % UINT_BITS)
-#define bitset_clear(set,i) (set[i / UINT_BITS] &= ~(1 << i % UINT_BITS))
-#define bitset_contain(set,i) (set[i / UINT_BITS] & (1 << i % UINT_BITS))
+#define bitset_set(set,i) (set[i / UINT_BITS] |= 1u << i % UINT_BITS)
+#define bitset_clear(set,i) (set[i / UINT_BITS] &= ~(1u << i % UINT_BITS))
+#define bitset_contain(set,i) (set[i / UINT_BITS] & (1u << i % UINT_BITS))
#define bitset_empty(set) memset (set, 0, sizeof (unsigned int) * BITSET_UINTS)
#define bitset_set_all(set) \
memset (set, 255, sizeof (unsigned int) * BITSET_UINTS)
@@ -627,8 +625,8 @@ struct re_fail_stack_t
struct re_dfa_t
{
re_token_t *nodes;
- int nodes_alloc;
- int nodes_len;
+ size_t nodes_alloc;
+ size_t nodes_len;
int *nexts;
int *org_indices;
re_node_set *edests;
@@ -701,10 +699,12 @@ static void re_node_set_remove_at (re_node_set *set, int idx) internal_function;
#define re_node_set_empty(p) ((p)->nelem = 0)
#define re_node_set_free(set) re_free ((set)->elems)
static int re_dfa_add_node (re_dfa_t *dfa, re_token_t token) internal_function;
-static re_dfastate_t *re_acquire_state (reg_errcode_t *err, re_dfa_t *dfa,
- const re_node_set *nodes) internal_function;
+static re_dfastate_t *re_acquire_state (reg_errcode_t *err, const
+ re_dfa_t *dfa,
+ const re_node_set *nodes)
+ internal_function;
static re_dfastate_t *re_acquire_state_context (reg_errcode_t *err,
- re_dfa_t *dfa,
+ const re_dfa_t *dfa,
const re_node_set *nodes,
unsigned int context) internal_function;
static void free_state (re_dfastate_t *state) internal_function;
diff --git a/posix/regexec.c b/posix/regexec.c
index bdb2c4cf9e..2322f14bc8 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -25,7 +25,7 @@ static void match_ctx_free (re_match_context_t *cache) internal_function;
static reg_errcode_t match_ctx_add_entry (re_match_context_t *cache, int node,
int str_idx, int from, int to)
internal_function;
-static int search_cur_bkref_entry (re_match_context_t *mctx, int str_idx)
+static int search_cur_bkref_entry (const re_match_context_t *mctx, int str_idx)
internal_function;
static reg_errcode_t match_ctx_add_subtop (re_match_context_t *mctx, int node,
int str_idx) internal_function;
@@ -104,13 +104,14 @@ static reg_errcode_t add_epsilon_src_nodes (re_dfa_t *dfa,
static reg_errcode_t sub_epsilon_src_nodes (re_dfa_t *dfa, int node,
re_node_set *dest_nodes,
const re_node_set *and_nodes) internal_function;
-static int check_dst_limits (re_match_context_t *mctx, re_node_set *limits,
+static int check_dst_limits (const re_match_context_t *mctx,
+ re_node_set *limits,
int dst_node, int dst_idx, int src_node,
int src_idx) internal_function;
-static int check_dst_limits_calc_pos_1 (re_match_context_t *mctx,
+static int check_dst_limits_calc_pos_1 (const re_match_context_t *mctx,
int boundaries, int subexp_idx,
int from_node, int bkref_idx) internal_function;
-static int check_dst_limits_calc_pos (re_match_context_t *mctx,
+static int check_dst_limits_calc_pos (const re_match_context_t *mctx,
int limit, int subexp_idx,
int node, int str_idx,
int bkref_idx) internal_function;
@@ -185,7 +186,7 @@ static unsigned int find_collation_sequence_value (const unsigned char *mbs,
size_t name_len) internal_function;
# endif /* _LIBC */
#endif /* RE_ENABLE_I18N */
-static int group_nodes_into_DFAstates (re_dfa_t *dfa,
+static int group_nodes_into_DFAstates (const re_dfa_t *dfa,
const re_dfastate_t *state,
re_node_set *states_node,
bitset *states_ch) internal_function;
@@ -883,14 +884,14 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
#ifdef RE_ENABLE_I18N
if (BE (mctx.input.offsets_needed != 0, 0))
{
- if (pmatch[reg_idx].rm_so == mctx.input.valid_len)
- pmatch[reg_idx].rm_so += mctx.input.valid_raw_len - mctx.input.valid_len;
- else
- pmatch[reg_idx].rm_so = mctx.input.offsets[pmatch[reg_idx].rm_so];
- if (pmatch[reg_idx].rm_eo == mctx.input.valid_len)
- pmatch[reg_idx].rm_eo += mctx.input.valid_raw_len - mctx.input.valid_len;
- else
- pmatch[reg_idx].rm_eo = mctx.input.offsets[pmatch[reg_idx].rm_eo];
+ pmatch[reg_idx].rm_so =
+ (pmatch[reg_idx].rm_so == mctx.input.valid_len
+ ? mctx.input.valid_raw_len
+ : mctx.input.offsets[pmatch[reg_idx].rm_so]);
+ pmatch[reg_idx].rm_eo =
+ (pmatch[reg_idx].rm_eo == mctx.input.valid_len
+ ? mctx.input.valid_raw_len
+ : mctx.input.offsets[pmatch[reg_idx].rm_eo]);
}
#else
assert (mctx.input.offsets_needed == 0);
@@ -1887,7 +1888,7 @@ sub_epsilon_src_nodes (dfa, node, dest_nodes, candidates)
static int
check_dst_limits (mctx, limits, dst_node, dst_idx, src_node, src_idx)
- re_match_context_t *mctx;
+ const re_match_context_t *mctx;
re_node_set *limits;
int dst_node, dst_idx, src_node, src_idx;
{
@@ -1924,7 +1925,7 @@ check_dst_limits (mctx, limits, dst_node, dst_idx, src_node, src_idx)
static int
check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx, from_node, bkref_idx)
- re_match_context_t *mctx;
+ const re_match_context_t *mctx;
int boundaries, subexp_idx, from_node, bkref_idx;
{
re_dfa_t *const dfa = mctx->dfa;
@@ -1949,8 +1950,9 @@ check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx, from_node, bkref_idx)
if (ent->node != node)
continue;
- if (subexp_idx <= 8 * sizeof (ent->eps_reachable_subexps_map)
- && !(ent->eps_reachable_subexps_map & (1 << subexp_idx)))
+ if (subexp_idx
+ < CHAR_BIT * sizeof ent->eps_reachable_subexps_map
+ && !(ent->eps_reachable_subexps_map & (1u << subexp_idx)))
continue;
/* Recurse trying to reach the OP_OPEN_SUBEXP and
@@ -1976,7 +1978,9 @@ check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx, from_node, bkref_idx)
if (cpos == 0 && (boundaries & 2))
return 0;
- ent->eps_reachable_subexps_map &= ~(1 << subexp_idx);
+ if (subexp_idx
+ < CHAR_BIT * sizeof ent->eps_reachable_subexps_map)
+ ent->eps_reachable_subexps_map &= ~(1u << subexp_idx);
}
while (ent++->more);
}
@@ -2002,7 +2006,7 @@ check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx, from_node, bkref_idx)
static int
check_dst_limits_calc_pos (mctx, limit, subexp_idx, from_node, str_idx, bkref_idx)
- re_match_context_t *mctx;
+ const re_match_context_t *mctx;
int limit, subexp_idx, from_node, str_idx, bkref_idx;
{
struct re_backref_cache_entry *lim = mctx->bkref_ents + limit;
@@ -2443,8 +2447,8 @@ check_subexp_matching_top (mctx, cur_nodes, str_idx)
{
int node = cur_nodes->elems[node_idx];
if (dfa->nodes[node].type == OP_OPEN_SUBEXP
- && dfa->nodes[node].opr.idx < (8 * sizeof (dfa->used_bkref_map))
- && dfa->used_bkref_map & (1 << dfa->nodes[node].opr.idx))
+ && dfa->nodes[node].opr.idx < CHAR_BIT * sizeof dfa->used_bkref_map
+ && dfa->used_bkref_map & (1u << dfa->nodes[node].opr.idx))
{
err = match_ctx_add_subtop (mctx, node, str_idx);
if (BE (err != REG_NOERROR, 0))
@@ -2557,7 +2561,8 @@ transit_state_mb (mctx, pstate)
if (BE (err != REG_NOERROR, 0))
return err;
}
- context = re_string_context_at (&mctx->input, dest_idx - 1, mctx->eflags);
+ context = re_string_context_at (&mctx->input, dest_idx - 1,
+ mctx->eflags);
mctx->state_log[dest_idx]
= re_acquire_state_context (&err, dfa, &dest_nodes, context);
if (dest_state != NULL)
@@ -2696,7 +2701,8 @@ get_subexp (mctx, bkref_node, bkref_str_idx)
int cache_idx = search_cur_bkref_entry (mctx, bkref_str_idx);
if (cache_idx != -1)
{
- const struct re_backref_cache_entry *entry = mctx->bkref_ents + cache_idx;
+ const struct re_backref_cache_entry *entry
+ = mctx->bkref_ents + cache_idx;
do
if (entry->node == bkref_node)
return REG_NOERROR; /* We already checked it. */
@@ -2743,7 +2749,8 @@ get_subexp (mctx, bkref_node, bkref_str_idx)
buf = (const char *) re_string_get_buffer (&mctx->input);
}
if (memcmp (buf + bkref_str_off, buf + sl_str, sl_str_diff) != 0)
- break; /* We don't need to search this sub expression any more. */
+ /* We don't need to search this sub expression any more. */
+ break;
}
bkref_str_off += sl_str_diff;
sl_str += sl_str_diff;
@@ -2794,7 +2801,8 @@ get_subexp (mctx, bkref_node, bkref_str_idx)
continue;
/* Does this state have a ')' of the sub expression? */
nodes = &mctx->state_log[sl_str]->nodes;
- cls_node = find_subexp_node (dfa, nodes, subexp_num, OP_CLOSE_SUBEXP);
+ cls_node = find_subexp_node (dfa, nodes, subexp_num,
+ OP_CLOSE_SUBEXP);
if (cls_node == -1)
continue; /* No. */
if (sub_top->path == NULL)
@@ -2807,7 +2815,8 @@ get_subexp (mctx, bkref_node, bkref_str_idx)
/* Can the OP_OPEN_SUBEXP node arrive the OP_CLOSE_SUBEXP node
in the current context? */
err = check_arrival (mctx, sub_top->path, sub_top->node,
- sub_top->str_idx, cls_node, sl_str, OP_CLOSE_SUBEXP);
+ sub_top->str_idx, cls_node, sl_str,
+ OP_CLOSE_SUBEXP);
if (err == REG_NOMATCH)
continue;
if (BE (err != REG_NOERROR, 0))
@@ -2841,7 +2850,8 @@ get_subexp_sub (mctx, sub_top, sub_last, bkref_node, bkref_str)
int to_idx;
/* Can the subexpression arrive the back reference? */
err = check_arrival (mctx, &sub_last->path, sub_last->node,
- sub_last->str_idx, bkref_node, bkref_str, OP_OPEN_SUBEXP);
+ sub_last->str_idx, bkref_node, bkref_str,
+ OP_OPEN_SUBEXP);
if (err != REG_NOERROR)
return err;
err = match_ctx_add_entry (mctx, bkref_node, bkref_str, sub_top->str_idx,
@@ -3539,10 +3549,10 @@ out_free:
static int
group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch)
- re_dfa_t *dfa;
- const re_dfastate_t *state;
- re_node_set *dests_node;
- bitset *dests_ch;
+ const re_dfa_t *dfa;
+ const re_dfastate_t *state;
+ re_node_set *dests_node;
+ bitset *dests_ch;
{
reg_errcode_t err;
int result;
@@ -4265,7 +4275,7 @@ match_ctx_add_entry (mctx, node, str_idx, from, to)
static int
search_cur_bkref_entry (mctx, str_idx)
- re_match_context_t *mctx;
+ const re_match_context_t *mctx;
int str_idx;
{
int left, right, mid, last;