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[Coverity] fix issue reported for SWIG_Python_ConvertFunctionPtr

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Fix Coverity issue reported for SWIG_Python_ConvertFunctionPtr:

"Execution cannot reach this statement: *ptr = vptr;"

Because if 'ty' is null, then desc becomes null and we return with
SWIG_ERROR. So 'ty' cannot be null at 'if (ty)'.
This commit is contained in:
Mark Dufour 2017-02-14 10:48:30 +01:00 • committed by Olly Betts
commit 21f532975f
1 changed files with 9 additions and 12 deletions
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21
Lib/python/pyrun.swg
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@ -1287,25 +1287,22 @@ SWIG_Python_ConvertFunctionPtr(PyObject *obj, void **ptr, swig_type_info *ty) {
return SWIG_ConvertPtr(obj, ptr, ty, 0);
} else {
void *vptr = 0;
swig_cast_info *tc;
/* here we get the method pointer for callbacks */
const char *doc = (((PyCFunctionObject *)obj) -> m_ml -> ml_doc);
const char *desc = doc ? strstr(doc, "swig_ptr: ") : 0;
if (desc)
desc = ty ? SWIG_UnpackVoidPtr(desc + 10, &vptr, ty->name) : 0;
if (!desc)
if (!desc)
return SWIG_ERROR;
if (ty) {
swig_cast_info *tc = SWIG_TypeCheck(desc,ty);
if (tc) {
int newmemory = 0;
*ptr = SWIG_TypeCast(tc,vptr,&newmemory);
assert(!newmemory); /* newmemory handling not yet implemented */
} else {
return SWIG_ERROR;
}
tc = SWIG_TypeCheck(desc,ty);
if (tc) {
int newmemory = 0;
*ptr = SWIG_TypeCast(tc,vptr,&newmemory);
assert(!newmemory); /* newmemory handling not yet implemented */
} else {
*ptr = vptr;
return SWIG_ERROR;
}
return SWIG_OK;
}