[PATCH 0/1] MR10635: vbscript: Return proper error for wrong number of arguments.

[Francis De Brabandere (＠francisdb)]

Return VBSE_FUNC_ARITY_MISMATCH (450) instead of E_FAIL when a function or sub is called with the wrong number of arguments.

-- 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10635

[PATCH 1/1] vbscript: Return proper error for wrong number of arguments.

[Francis De Brabandere]

From: Francis De Brabandere <[e-mail]>

Return VBSE_FUNC_ARITY_MISMATCH (450) instead of E_FAIL when a
function or sub is called with the wrong number of arguments.
---
 dlls/vbscript/interp.c       |  4 ++--
 dlls/vbscript/tests/lang.vbs | 29 +++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/dlls/vbscript/interp.c b/dlls/vbscript/interp.c
index 994da407169..87492efb1a1 100644
--- a/dlls/vbscript/interp.c
+++ b/dlls/vbscript/interp.c
@@ -2700,8 +2700,8 @@ HRESULT exec_script(script_ctx_t *ctx, BOOL extern_caller, function_t *func, vbd
     ctx->caller_exec = NULL;
 
     if(dp ? func->arg_cnt != arg_cnt(dp) : func->arg_cnt) {
-        FIXME("wrong arg_cnt %d, expected %d\n", dp ? arg_cnt(dp) : 0, func->arg_cnt);
-        return E_FAIL;
+        WARN("wrong arg_cnt %d, expected %d\n", dp ? arg_cnt(dp) : 0, func->arg_cnt);
+        return MAKE_VBSERROR(VBSE_FUNC_ARITY_MISMATCH);
     }
 
     heap_pool_init(&exec.heap);
diff --git a/dlls/vbscript/tests/lang.vbs b/dlls/vbscript/tests/lang.vbs
index 777d7bfc5a9..b1c7855a58e 100644
--- a/dlls/vbscript/tests/lang.vbs
+++ b/dlls/vbscript/tests/lang.vbs
@@ -3183,4 +3183,33 @@ Call ok(Err.Number = 13, "bool var as statement: err = " & Err.Number)
 
 On Error GoTo 0
 
+' Wrong number of arguments error (450)
+Sub ArityTestSub(a, b)
+End Sub
+
+Function ArityTestFunc(a)
+    ArityTestFunc = a
+End Function
+
+On Error Resume Next
+
+Err.Clear
+ArityTestSub 1
+Call ok(Err.Number = 450, "too few args sub: err = " & Err.Number)
+
+Err.Clear
+ArityTestSub 1, 2, 3
+Call ok(Err.Number = 450, "too many args sub: err = " & Err.Number)
+
+Err.Clear
+Dim arityResult
+arityResult = ArityTestFunc()
+Call ok(Err.Number = 450, "too few args func: err = " & Err.Number)
+
+Err.Clear
+arityResult = ArityTestFunc(1, 2)
+Call ok(Err.Number = 450, "too many args func: err = " & Err.Number)
+
+On Error GoTo 0
+
 reportSuccess()
-- 
GitLab

https://gitlab.winehq.org/wine/wine/-/merge_requests/10635