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re.c: rb_reg_region_copy

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* re.c (rb_reg_region_copy): new function to try with GC if copy
  failed and return the error.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48672 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2014-12-01 21:30:58 +00:00
parent 4ea50d7aea
commit 012c558127
4 changed files with 26 additions and 8 deletions
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5
ChangeLog
View file

@ -1,3 +1,8 @@
Tue Dec 2 06:30:55 2014 Nobuyoshi Nakada <nobu@ruby-lang.org>
* re.c (rb_reg_region_copy): new function to try with GC if copy
failed and return the error.
Tue Dec 2 04:43:08 2014 Nobuyoshi Nakada <nobu@ruby-lang.org>
* re.c (CHECK_REGION_COPIED): onig_region_copy() can fail when

5
ext/strscan/strscan.c
View file

@ -251,8 +251,9 @@ strscan_init_copy(VALUE vself, VALUE vorig)
self->str = orig->str;
self->prev = orig->prev;
self->curr = orig->curr;
onig_region_copy(&self->regs, &orig->regs);
if (!self->regs.allocated) rb_memerror();
if (rb_reg_region_copy(&self->regs, &orig->regs))
rb_memerror();
RB_GC_GUARD(vorig);
}
return vself;

1
include/ruby/re.h
View file

@ -58,6 +58,7 @@ long rb_reg_adjust_startpos(VALUE, VALUE, long, int);
void rb_match_busy(VALUE);
VALUE rb_reg_quote(VALUE);
regex_t *rb_reg_prepare_re(VALUE re, VALUE str);
int rb_reg_region_copy(struct re_registers *, const struct re_registers *);
RUBY_SYMBOL_EXPORT_END

23
re.c
View file

@ -20,8 +20,6 @@ VALUE rb_eRegexpError;
typedef char onig_errmsg_buffer[ONIG_MAX_ERROR_MESSAGE_LEN];
#define errcpy(err, msg) strlcpy((err), (msg), ONIG_MAX_ERROR_MESSAGE_LEN)
#define CHECK_REGION_COPIED(regs) \
do {if (!(regs)->allocated) rb_memerror();} while (0)
#define BEG(no) (regs->beg[(no)])
#define END(no) (regs->end[(no)])
@ -877,6 +875,17 @@ match_alloc(VALUE klass)
return (VALUE)match;
}
int
rb_reg_region_copy(struct re_registers *to, const struct re_registers *from)
{
onig_region_copy(to, (OnigRegion *)from);
if (to->allocated) return 0;
rb_gc();
onig_region_copy(to, (OnigRegion *)from);
if (to->allocated) return 0;
return ONIGERR_MEMORY;
}
typedef struct {
long byte_pos;
long char_pos;
@ -984,8 +993,8 @@ match_init_copy(VALUE obj, VALUE orig)
RMATCH(obj)->regexp = RMATCH(orig)->regexp;
rm = RMATCH(obj)->rmatch;
onig_region_copy(&rm->regs, RMATCH_REGS(orig));
CHECK_REGION_COPIED(&rm->regs);
if (rb_reg_region_copy(&rm->regs, RMATCH_REGS(orig)))
rb_memerror();
if (!RMATCH(orig)->rmatch->char_offset_updated) {
rm->char_offset_updated = 0;
@ -998,6 +1007,7 @@ match_init_copy(VALUE obj, VALUE orig)
MEMCPY(rm->char_offset, RMATCH(orig)->rmatch->char_offset,
struct rmatch_offset, rm->regs.num_regs);
rm->char_offset_updated = 1;
RB_GC_GUARD(orig);
}
return obj;
@ -1472,10 +1482,11 @@ rb_reg_search0(VALUE re, VALUE str, long pos, int reverse, int set_backref_str)
}
if (NIL_P(match)) {
int err;
match = match_alloc(rb_cMatch);
onig_region_copy(RMATCH_REGS(match), regs);
err = rb_reg_region_copy(RMATCH_REGS(match), regs);
onig_region_free(regs, 0);
CHECK_REGION_COPIED(RMATCH_REGS(match));
if (err) rb_memerror();
}
else {
if (rb_safe_level() >= 3)