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Fixed resizestring() to work if reference tracing is turned on.

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The realloc() call would move the list head without fixing the
pointers to in the the chain of allocated objects...
This commit is contained in:
Guido van Rossum 1990-11-18 17:30:23 +00:00
parent da0c6bdfe3
commit 921842f2c2
1 changed files with 13 additions and 6 deletions
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19
Objects/stringobject.c
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@ -296,24 +296,31 @@ resizestring(pv, newsize)
object **pv;
int newsize;
{
register stringobject *v;
v = (stringobject *) *pv;
register object *v;
register stringobject *sv;
v = *pv;
if (!is_stringobject(v) || v->ob_refcnt != 1) {
*pv = 0;
DECREF(v);
err_badcall();
return -1;
}
/* XXX UNREF/NEWREF interface should be more symmetrical */
#ifdef TRACE_REFS
--ref_total;
#endif
UNREF(v);
*pv = (object *)
realloc((char *)v,
sizeof(stringobject) + newsize * sizeof(char));
if (*pv == NULL) {
DECREF(v);
DEL(v);
err_nomem();
return -1;
}
v = (stringobject *) *pv;
v->ob_size = newsize;
v->ob_sval[newsize] = '\0';
NEWREF(*pv);
sv = (stringobject *) *pv;
sv->ob_size = newsize;
sv->ob_sval[newsize] = '\0';
return 0;
}