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

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;
}