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clear shared and nofree flags; ref #2370

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2014-06-07 17:24:18 +09:00
parent 20dc629b11
commit b0c90141d9
1 changed files with 10 additions and 4 deletions
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src/string.c
+10 -4
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@@ -2537,11 +2537,17 @@ mrb_str_clear(mrb_state *mrb, mrb_value str)
{
struct RString *s = mrb_str_ptr(str);
if (!STR_SHARED_P(s) && !STR_EMBED_P(s) && ((s->flags & MRB_STR_NOFREE) == 0)) {
mrb_free(mrb, s->as.heap.ptr);
RSTRING(str)->as.heap.ptr = 0;
RSTRING(str)->as.heap.len = 0;
if (!STR_SHARED_P(s) && !STR_EMBED_P(s)) {
if (s->flags & MRB_STR_NOFREE) {
s->flags &= ~MRB_STR_NOFREE;
}
else {
mrb_free(mrb, s->as.heap.ptr);
}
s->as.heap.ptr = 0;
s->as.heap.len = 0;
}
STR_UNSET_SHARED_FLAG(s);
STR_SET_EMBED_FLAG(s);
STR_SET_EMBED_LEN(s, 0);
RSTRING_PTR(str)[0] = '\0';