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Diffstat (limited to 'posix/regexec.c')
-rw-r--r--posix/regexec.c156
1 files changed, 82 insertions, 74 deletions
diff --git a/posix/regexec.c b/posix/regexec.c
index dc60e50..a069d7d 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -176,18 +176,20 @@ re_match (buffer, string, length, start, regs)
struct re_registers *regs;
{
reg_errcode_t result;
- int i, nregs, rval, eflags = 0;
+ int i, tmp_nregs, nregs, rval, eflags = 0;
regmatch_t *pmatch;
eflags |= (buffer->not_bol) ? REG_NOTBOL : 0;
eflags |= (buffer->not_eol) ? REG_NOTEOL : 0;
/* We need at least 1 register. */
- nregs = ((regs == NULL) ? 1
- : ((regs->num_regs > buffer->re_nsub) ? buffer->re_nsub + 1
- : regs->num_regs + 1));
+ tmp_nregs = ((buffer->no_sub || regs == NULL || regs->num_regs < 1) ? 1
+ : regs->num_regs);
+ nregs = ((tmp_nregs < buffer->re_nsub + 1
+ && buffer->regs_allocated == REGS_FIXED) ? tmp_nregs
+ : buffer->re_nsub + 1);
pmatch = re_malloc (regmatch_t, nregs);
- if (pmatch == NULL)
+ if (BE (pmatch == NULL, 0))
return -2;
result = re_search_internal (buffer, string, length, start, 0,
nregs, pmatch, eflags);
@@ -200,11 +202,10 @@ re_match (buffer, string, length, start, regs)
{ /* No. So allocate them with malloc. We need one
extra element beyond `num_regs' for the `-1' marker
GNU code uses. */
- regs->num_regs = ((RE_NREGS > buffer->re_nsub + 1) ? RE_NREGS
- : buffer->re_nsub + 1);
+ regs->num_regs = buffer->re_nsub + 1;
regs->start = re_malloc (regoff_t, regs->num_regs);
regs->end = re_malloc (regoff_t, regs->num_regs);
- if (regs->start == NULL || regs->end == NULL)
+ if (BE (regs->start == NULL || regs->end == NULL, 0))
{
re_free (pmatch);
return -2;
@@ -220,7 +221,7 @@ re_match (buffer, string, length, start, regs)
regs->num_regs = buffer->re_nsub + 1;
regs->start = re_realloc (regs->start, regoff_t, regs->num_regs);
regs->end = re_realloc (regs->end, regoff_t, regs->num_regs);
- if (regs->start == NULL || regs->end == NULL)
+ if (BE (regs->start == NULL || regs->end == NULL, 0))
{
re_free (pmatch);
return -2;
@@ -238,7 +239,9 @@ re_match (buffer, string, length, start, regs)
/* Restore registers. */
if (regs != NULL)
{
- for (i = 0; i <= nregs; ++i)
+ int max_regs = ((regs->num_regs < buffer->re_nsub + 1) ? regs->num_regs
+ : buffer->re_nsub + 1);
+ for (i = 0; i < max_regs; ++i)
{
regs->start[i] = pmatch[i].rm_so;
regs->end[i] = pmatch[i].rm_eo;
@@ -279,7 +282,7 @@ re_match_2 (buffer, string1, length1, string2, length2, start, regs, stop)
{
int len, ret;
char *str = re_malloc (char, length1 + length2);
- if (str == NULL)
+ if (BE (str == NULL, 0))
return -2;
memcpy (str, string1, length1);
memcpy (str + length1, string2, length2);
@@ -303,21 +306,25 @@ re_search (bufp, string, size, startpos, range, regs)
struct re_registers *regs;
{
reg_errcode_t result;
- int i, nregs, real_range, rval, eflags = 0;
+ int i, tmp_nregs, nregs, real_range, rval, eflags = 0;
regmatch_t *pmatch;
eflags |= (bufp->not_bol) ? REG_NOTBOL : 0;
eflags |= (bufp->not_eol) ? REG_NOTEOL : 0;
/* Check for out-of-range. */
- if (startpos < 0 || startpos > size)
+ if (BE (startpos < 0 || startpos > size, 0))
return -1;
/* We need at least 1 register. */
- nregs = ((regs == NULL) ? 1
- : ((regs->num_regs > bufp->re_nsub) ? bufp->re_nsub + 1
- : regs->num_regs + 1));
+ tmp_nregs = ((bufp->no_sub || regs == NULL || regs->num_regs < 1) ? 1
+ : regs->num_regs);
+ nregs = ((tmp_nregs < bufp->re_nsub + 1
+ && bufp->regs_allocated == REGS_FIXED) ? tmp_nregs
+ : bufp->re_nsub + 1);
pmatch = re_malloc (regmatch_t, nregs);
+ if (BE (pmatch == NULL, 0))
+ return -2;
/* Correct range if we need. */
real_range = ((startpos + range > size) ? size - startpos
@@ -338,11 +345,10 @@ re_search (bufp, string, size, startpos, range, regs)
{ /* No. So allocate them with malloc. We need one
extra element beyond `num_regs' for the `-1' marker
GNU code uses. */
- regs->num_regs = ((RE_NREGS > bufp->re_nsub + 1) ? RE_NREGS
- : bufp->re_nsub + 1);
+ regs->num_regs = bufp->re_nsub + 1;
regs->start = re_malloc (regoff_t, regs->num_regs);
regs->end = re_malloc (regoff_t, regs->num_regs);
- if (regs->start == NULL || regs->end == NULL)
+ if (BE (regs->start == NULL || regs->end == NULL, 0))
{
re_free (pmatch);
return -2;
@@ -358,7 +364,7 @@ re_search (bufp, string, size, startpos, range, regs)
regs->num_regs = bufp->re_nsub + 1;
regs->start = re_realloc (regs->start, regoff_t, regs->num_regs);
regs->end = re_realloc (regs->end, regoff_t, regs->num_regs);
- if (regs->start == NULL || regs->end == NULL)
+ if (BE (regs->start == NULL || regs->end == NULL, 0))
{
re_free (pmatch);
return -2;
@@ -376,7 +382,9 @@ re_search (bufp, string, size, startpos, range, regs)
/* Restore registers. */
if (regs != NULL)
{
- for (i = 0; i <= bufp->re_nsub; ++i)
+ int max_regs = ((regs->num_regs < bufp->re_nsub + 1) ? regs->num_regs
+ : bufp->re_nsub + 1);
+ for (i = 0; i < max_regs; ++i)
{
regs->start[i] = pmatch[i].rm_so;
regs->end[i] = pmatch[i].rm_eo;
@@ -522,9 +530,9 @@ re_search_internal (preg, string, length, start, range, nmatch, pmatch, eflags)
? preg->fastmap : NULL);
/* Check if the DFA haven't been compiled. */
- if (preg->used == 0 || dfa->init_state == NULL
- || dfa->init_state_word == NULL || dfa->init_state_nl == NULL
- || dfa->init_state_begbuf == NULL)
+ if (BE (preg->used == 0 || dfa->init_state == NULL
+ || dfa->init_state_word == NULL || dfa->init_state_nl == NULL
+ || dfa->init_state_begbuf == NULL, 0))
return REG_NOMATCH;
re_node_set_init_empty (&empty_set);
@@ -539,7 +547,7 @@ re_search_internal (preg, string, length, start, range, nmatch, pmatch, eflags)
if (nmatch > 1 || dfa->has_mb_node)
{
state_log = re_malloc (re_dfastate_t *, length + 1);
- if (state_log == NULL)
+ if (BE (state_log == NULL, 0))
return REG_ESPACE;
}
else
@@ -549,11 +557,11 @@ re_search_internal (preg, string, length, start, range, nmatch, pmatch, eflags)
err = re_string_construct_toupper (&input, string, length, preg->translate);
else
err = re_string_construct (&input, string, length, preg->translate);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
err = match_ctx_init (&mctx, eflags, dfa->nbackref * 2);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
#ifdef DEBUG
@@ -581,7 +589,7 @@ re_search_internal (preg, string, length, start, range, nmatch, pmatch, eflags)
match_first, 0, fl_longest_match);
if (match_last != -1)
{
- if (match_last == -2)
+ if (BE (match_last == -2, 0))
return REG_ESPACE;
else
break; /* We found a matching. */
@@ -627,11 +635,11 @@ re_search_internal (preg, string, length, start, range, nmatch, pmatch, eflags)
halt_node = check_halt_state_context (preg, pstate, &input,
match_last, eflags);
err = sift_states_backward (preg, state_log, &mctx, &input, halt_node);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
err = set_regs (preg, state_log, &mctx, &input, nmatch, pmatch,
halt_node);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
}
}
@@ -707,7 +715,7 @@ check_matching (preg, input, mctx, state_log, start_idx, fl_search,
cur_state = acquire_init_state_context (&err, preg, input, start_idx,
mctx->eflags);
/* An initial state must not be NULL(invalid state). */
- if (cur_state == NULL)
+ if (BE (cur_state == NULL, 0))
return -2;
if (state_log != NULL)
state_log[start_idx] = cur_state;
@@ -735,7 +743,7 @@ check_matching (preg, input, mctx, state_log, start_idx, fl_search,
if (cur_state == NULL) /* Reached at the invalid state or an error. */
{
int cur_str_idx = re_string_cur_idx (input);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return -2;
if (fl_search && !match)
{
@@ -747,7 +755,7 @@ check_matching (preg, input, mctx, state_log, start_idx, fl_search,
cur_state = acquire_init_state_context (&err, preg, input,
cur_str_idx,
mctx->eflags);
- if (cur_state == NULL && err != REG_NOERROR)
+ if (BE (cur_state == NULL && err != REG_NOERROR, 0))
return -2;
if (state_log != NULL)
state_log[cur_str_idx] = cur_state;
@@ -853,7 +861,7 @@ proceed_next_node (preg, state_log, mctx, input, pidx, node, eps_via_nodes)
if (IS_EPSILON_NODE (dfa->nodes[node].type))
{
err = re_node_set_insert (eps_via_nodes, node);
- if (err < 0)
+ if (BE (err < 0, 0))
return -1;
for (i = 0; i < state_log[*pidx]->nodes.nelem; ++i)
{
@@ -896,7 +904,7 @@ proceed_next_node (preg, state_log, mctx, input, pidx, node, eps_via_nodes)
if (naccepted == 0)
{
err = re_node_set_insert (eps_via_nodes, node);
- if (err < 0)
+ if (BE (err < 0, 0))
return -1;
dest_node = dfa->nexts[node];
if (re_node_set_contains (&state_log[*pidx]->nodes, dest_node))
@@ -996,7 +1004,7 @@ set_regs (preg, state_log, mctx, input, nmatch, pmatch, last_node)
/* Proceed to next node. */
cur_node = proceed_next_node (preg, state_log, mctx, input, &idx,
cur_node, &eps_via_nodes);
- if (cur_node < 0)
+ if (BE (cur_node < 0, 0))
return REG_ESPACE;
}
re_node_set_free (&eps_via_nodes);
@@ -1046,26 +1054,26 @@ sift_states_backward (preg, state_log, mctx, input, last_node)
assert (state_log != NULL && state_log[str_idx] != NULL);
#endif
err = re_node_set_alloc (&state_buf, NUMBER_OF_STATE);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
plog = &state_log[str_idx]->nodes;
/* Build sifted state_log[str_idx]. It has the nodes which can epsilon
transit to the last_node and the last_node itself. */
err = re_node_set_intersect (&state_buf, plog, dfa->inveclosures + last_node);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
if (state_log[str_idx] != NULL && state_log[str_idx]->has_backref)
{
err = add_epsilon_backreference (dfa, mctx, plog, str_idx, &state_buf);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
}
/* Update state log. */
state_log[str_idx] = re_acquire_state (&err, dfa, &state_buf);
- if (state_log[str_idx] == NULL && err != REG_NOERROR)
+ if (BE (state_log[str_idx] == NULL && err != REG_NOERROR, 0))
return err;
/* Then check each states in the state_log. */
@@ -1129,19 +1137,19 @@ sift_states_backward (preg, state_log, mctx, input, last_node)
then we use plog->elems[i] instead. */
err = re_node_set_add_intersect (&state_buf, plog,
dfa->inveclosures + prev_node);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
}
if (state_log[str_idx] != NULL && state_log[str_idx]->has_backref)
{
err = add_epsilon_backreference (dfa, mctx, plog, str_idx, &state_buf);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
}
/* Update state_log. */
state_log[str_idx] = re_acquire_state (&err, dfa, &state_buf);
- if (state_log[str_idx] == NULL && err != REG_NOERROR)
+ if (BE (state_log[str_idx] == NULL && err != REG_NOERROR, 0))
return err;
}
@@ -1241,7 +1249,7 @@ add_epsilon_backreference (dfa, mctx, plog, idx, state_buf)
reg_errcode_t err;
err = re_node_set_add_intersect (state_buf, plog,
dfa->inveclosures + node_idx);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
i = 0;
}
@@ -1282,7 +1290,7 @@ transit_state (err, preg, state, input, fl_search, state_log, mctx)
if (state->accept_mb)
{
*err = transit_state_mb (preg, state, input, state_log, mctx);
- if (*err != REG_NOERROR)
+ if (BE (*err != REG_NOERROR, 0))
return NULL;
}
@@ -1307,7 +1315,7 @@ transit_state (err, preg, state, input, fl_search, state_log, mctx)
/* don't use transition table */
next_state = transit_state_sb (err, preg, state, input, fl_search,
mctx);
- if (next_state == NULL && err != REG_NOERROR)
+ if (BE (next_state == NULL && err != REG_NOERROR, 0))
return NULL;
}
}
@@ -1341,7 +1349,7 @@ transit_state (err, preg, state, input, fl_search, state_log, mctx)
table_nodes = next_state->entrance_nodes;
*err = re_node_set_init_union (&next_nodes, table_nodes,
log_nodes);
- if (*err != REG_NOERROR)
+ if (BE (*err != REG_NOERROR, 0))
return NULL;
}
else
@@ -1363,7 +1371,7 @@ transit_state (err, preg, state, input, fl_search, state_log, mctx)
if (next_state != NULL && next_state->has_backref)
{
*err = transit_state_bkref (preg, next_state, input, state_log, mctx);
- if (*err != REG_NOERROR)
+ if (BE (*err != REG_NOERROR, 0))
return NULL;
next_state = state_log[cur_idx];
}
@@ -1392,7 +1400,7 @@ transit_state_sb (err, preg, state, input, fl_search, mctx)
unsigned int context;
*err = re_node_set_alloc (&next_nodes, state->nodes.nelem + 1);
- if (*err != REG_NOERROR)
+ if (BE (*err != REG_NOERROR, 0))
return NULL;
for (node_cnt = 0; node_cnt < state->nodes.nelem; ++node_cnt)
{
@@ -1402,7 +1410,7 @@ transit_state_sb (err, preg, state, input, fl_search, mctx)
{
*err = re_node_set_merge (&next_nodes,
dfa->eclosures + dfa->nexts[cur_node]);
- if (*err != REG_NOERROR)
+ if (BE (*err != REG_NOERROR, 0))
return NULL;
}
}
@@ -1422,7 +1430,7 @@ transit_state_sb (err, preg, state, input, fl_search, mctx)
{
*err = re_node_set_merge (&next_nodes,
dfa->init_state->entrance_nodes);
- if (*err != REG_NOERROR)
+ if (BE (*err != REG_NOERROR, 0))
return NULL;
}
}
@@ -1490,14 +1498,14 @@ transit_state_mb (preg, pstate, input, state_log, mctx)
{
err = re_node_set_init_union (&dest_nodes,
dest_state->entrance_nodes, new_nodes);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
}
context = re_string_context_at (input, dest_idx - 1, mctx->eflags,
preg->newline_anchor);
state_log[dest_idx] = re_acquire_state_context (&err, dfa, &dest_nodes,
context);
- if (state_log[dest_idx] == NULL && err != REG_NOERROR)
+ if (BE (state_log[dest_idx] == NULL && err != REG_NOERROR, 0))
return err;
if (dest_state != NULL)
re_node_set_free (&dest_nodes);
@@ -1519,7 +1527,7 @@ transit_state_bkref (preg, pstate, input, state_log, mctx)
assert (mctx->match_first != -1);
#endif
work_state_log = re_malloc (re_dfastate_t *, re_string_cur_idx (input) + 1);
- if (work_state_log == NULL)
+ if (BE (work_state_log == NULL, 0))
return REG_ESPACE;
err = transit_state_bkref_loop (preg, input, &pstate->nodes, work_state_log,
@@ -1543,7 +1551,7 @@ transit_state_bkref_loop (preg, input, nodes, work_state_log, state_log, mctx)
int i, j;
regmatch_t *cur_regs = re_malloc (regmatch_t, preg->re_nsub + 1);
int cur_str_idx = re_string_cur_idx (input);
- if (cur_regs == NULL)
+ if (BE (cur_regs == NULL, 0))
return REG_ESPACE;
for (i = 0; i < nodes->nelem; ++i)
@@ -1600,7 +1608,7 @@ transit_state_bkref_loop (preg, input, nodes, work_state_log, state_log, mctx)
/* Successfully matched, add a new cache entry. */
dest_str_idx = cur_str_idx + subexp_len;
err = match_ctx_add_entry (mctx, node_idx, cur_str_idx, dest_str_idx);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
clean_state_log_if_need (state_log, mctx, dest_str_idx);
@@ -1625,7 +1633,7 @@ transit_state_bkref_loop (preg, input, nodes, work_state_log, state_log, mctx)
state_log[dest_str_idx] = re_acquire_state_context (&err, dfa,
new_dest_nodes,
context);
- if (state_log[dest_str_idx] == NULL && err != REG_NOERROR)
+ if (BE (state_log[dest_str_idx] == NULL && err != REG_NOERROR, 0))
return err;
}
else
@@ -1633,12 +1641,12 @@ transit_state_bkref_loop (preg, input, nodes, work_state_log, state_log, mctx)
re_node_set dest_nodes;
err = re_node_set_init_union (&dest_nodes, dest_state->entrance_nodes,
new_dest_nodes);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
state_log[dest_str_idx] = re_acquire_state_context (&err, dfa,
&dest_nodes,
context);
- if (state_log[dest_str_idx] == NULL && err != REG_NOERROR)
+ if (BE (state_log[dest_str_idx] == NULL && err != REG_NOERROR, 0))
return err;
re_node_set_free (&dest_nodes);
}
@@ -1649,7 +1657,7 @@ transit_state_bkref_loop (preg, input, nodes, work_state_log, state_log, mctx)
{
err = transit_state_bkref_loop (preg, input, new_dest_nodes,
work_state_log, state_log, mctx);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return err;
}
}
@@ -1684,13 +1692,13 @@ build_trtable (preg, state, fl_search)
/* Initialize transiton table. */
trtable = (re_dfastate_t **) calloc (sizeof (re_dfastate_t *), SBC_MAX);
- if (dests_node == NULL || dests_ch == NULL || trtable == NULL)
+ if (BE (dests_node == NULL || dests_ch == NULL || trtable == NULL, 0))
return NULL;
/* At first, group all nodes belonging to `state' into several
destinations. */
ndests = group_nodes_into_DFAstates (preg, state, dests_node, dests_ch);
- if (ndests <= 0)
+ if (BE (ndests <= 0, 0))
{
re_free (dests_node);
re_free (dests_ch);
@@ -1704,8 +1712,8 @@ build_trtable (preg, state, fl_search)
bitset_empty (acceptable);
err = re_node_set_alloc (&follows, ndests + 1);
- if (dest_states == NULL || dest_states_word == NULL || dest_states_nl == NULL
- || err != REG_NOERROR)
+ if (BE (dest_states == NULL || dest_states_word == NULL
+ || dest_states_nl == NULL || err != REG_NOERROR, 0))
return NULL;
/* Then build the states for all destinations. */
@@ -1720,7 +1728,7 @@ build_trtable (preg, state, fl_search)
if (next_node != -1)
{
err = re_node_set_merge (&follows, dfa->eclosures + next_node);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return NULL;
}
}
@@ -1740,12 +1748,12 @@ build_trtable (preg, state, fl_search)
{
err = re_node_set_merge (&follows,
dfa->init_state->entrance_nodes);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return NULL;
}
}
dest_states[i] = re_acquire_state_context (&err, dfa, &follows, 0);
- if (dest_states[i] == NULL && err != REG_NOERROR)
+ if (BE (dest_states[i] == NULL && err != REG_NOERROR, 0))
return NULL;
/* If the new state has context constraint,
build appropriate states for these contexts. */
@@ -1753,11 +1761,11 @@ build_trtable (preg, state, fl_search)
{
dest_states_word[i] = re_acquire_state_context (&err, dfa, &follows,
CONTEXT_WORD);
- if (dest_states_word[i] == NULL && err != REG_NOERROR)
+ if (BE (dest_states_word[i] == NULL && err != REG_NOERROR, 0))
return NULL;
dest_states_nl[i] = re_acquire_state_context (&err, dfa, &follows,
CONTEXT_NEWLINE);
- if (dest_states_nl[i] == NULL && err != REG_NOERROR)
+ if (BE (dest_states_nl[i] == NULL && err != REG_NOERROR, 0))
return NULL;
}
else
@@ -1915,14 +1923,14 @@ group_nodes_into_DFAstates (preg, state, dests_node, dests_ch)
bitset_copy (dests_ch[ndests], remains);
bitset_copy (dests_ch[j], intersec);
err = re_node_set_init_copy (dests_node + ndests, &dests_node[j]);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return -1;
++ndests;
}
/* Put the position in the current group. */
err = re_node_set_insert (&dests_node[j], cur_nodes->elems[i]);
- if (err < 0)
+ if (BE (err < 0, 0))
return -1;
/* If all characters are consumed, go to next node. */
@@ -1934,7 +1942,7 @@ group_nodes_into_DFAstates (preg, state, dests_node, dests_ch)
{
bitset_copy (dests_ch[ndests], accepts);
err = re_node_set_init_1 (dests_node + ndests, cur_nodes->elems[i]);
- if (err != REG_NOERROR)
+ if (BE (err != REG_NOERROR, 0))
return -1;
++ndests;
bitset_empty (accepts);
@@ -2209,7 +2217,7 @@ match_ctx_init (mctx, eflags, n)
if (n > 0)
{
mctx->bkref_ents = re_malloc (struct re_backref_cache_entry, n);
- if (mctx->bkref_ents == NULL)
+ if (BE (mctx->bkref_ents == NULL, 0))
return REG_ESPACE;
}
else
@@ -2239,7 +2247,7 @@ match_ctx_add_entry (mctx, node, from, to)
mctx->bkref_ents = re_realloc (mctx->bkref_ents,
struct re_backref_cache_entry,
mctx->abkref_ents * 2);
- if (mctx->bkref_ents == NULL)
+ if (BE (mctx->bkref_ents == NULL, 0))
return REG_ESPACE;
memset (mctx->bkref_ents + mctx->nbkref_ents, '\0',
sizeof (struct re_backref_cache_entry) * mctx->abkref_ents);
generated by cgit v1.1 at 2024-12-22 06:58:43 +0000