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Finish reverting commit 0a52d378b.

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Apply the solution adopted in commit dcb7d3caf (ie, explicitly
don't call memcmp for a zero-length comparison) to func_get_detail()
as well, removing one other place where we were passing an
uninitialized array to a parse_func.c entry point.

Discussion: https://postgr.es/m/MN2PR18MB2927F24692485D754794F01BE3740@MN2PR18MB2927.namprd18.prod.outlook.com
Discussion: https://postgr.es/m/MN2PR18MB2927F6873DF2774A505AC298E3740@MN2PR18MB2927.namprd18.prod.outlook.com
This commit is contained in:
Tom Lane 2019-11-12 16:58:00 -05:00
parent c5e8ea978d
commit 112caf9039
2 changed files with 4 additions and 6 deletions
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7
src/backend/parser/parse_func.c
View File

@ -1397,9 +1397,6 @@ func_get_detail(List *funcname,
FuncCandidateList raw_candidates;
FuncCandidateList best_candidate;
/* Passing NULL for argtypes is no longer allowed */
Assert(argtypes);
/* initialize output arguments to silence compiler warnings */
*funcid = InvalidOid;
*rettype = InvalidOid;
@ -1423,7 +1420,9 @@ func_get_detail(List *funcname,
best_candidate != NULL;
best_candidate = best_candidate->next)
{
if (memcmp(argtypes, best_candidate->args, nargs * sizeof(Oid)) == 0)
/* if nargs==0, argtypes can be null; don't pass that to memcmp */
if (nargs == 0 ||
memcmp(argtypes, best_candidate->args, nargs * sizeof(Oid)) == 0)
break;
}

3
src/backend/utils/adt/ruleutils.c
View File

@ -833,7 +833,6 @@ pg_get_triggerdef_worker(Oid trigid, bool pretty)
char *tgname;
char *tgoldtable;
char *tgnewtable;
Oid argtypes[1]; /* dummy */
Datum value;
bool isnull;
@ -1045,7 +1044,7 @@ pg_get_triggerdef_worker(Oid trigid, bool pretty)
appendStringInfo(&buf, "EXECUTE FUNCTION %s(",
generate_function_name(trigrec->tgfoid, 0,
NIL, argtypes,
NIL, NULL,
false, NULL, EXPR_KIND_NONE));
if (trigrec->tgnargs > 0)