% analysis was incorrect for int vectors.

releasenotes.md

@@ -52,6 +52,7 @@
 - Better error when casting to a distinct fails.
 - With single module, name the .o file after what `-o` provides. #1306
 - Bitstruct members can now have attributes.
+- `%` analysis was incorrect for int vectors.
 
 ### Stdlib changes
 

src/compiler/sema_expr.c

@@ -6010,9 +6010,8 @@ static bool sema_expr_analyse_mod(SemaContext *context, Expr *expr, Expr *left,
 			expr->const_expr.fxx = float_rem(left->const_expr.fxx, right->const_expr.fxx);
 		}
 	}
-	else
+	else if (type_is_integer(flat))
 	{
-		assert(type_is_integer(flat));
 		// 3. a % 0 is not valid, so detect it.
 		if (sema_cast_const(right) && int_is_zero(right->const_expr.ixx)) RETURN_SEMA_ERROR(right, "Cannot perform %% with a constant zero.");
 

test/unit/regression/vector_ops.c3

@@ -1,5 +1,15 @@
 import std::io;
 
+fn void! test_int_mod() @test
+{
+	int[<2>] y = { 10, 99 };
+	int[<2>] z = { 3, 5 };
+	assert(y % z == { 1, 4 });
+	assert(y / z == { 3, 19 });
+	assert(int[<2>]{ 10, 99 } % int[<2>]{ 3, 5 } == { 1, 4 });
+	assert(int[<2>]{ 10, 99 } / int[<2>]{ 3, 5 } == { 3, 19 });
+}
+
 fn void! test_conv() @test
 {
     float[<4>] y = { 1, 2, 3, 4 };