feat(lint): add unused-label and invalid-textflag rules

Assisted-by: MiMo V2.5 Pro
2026-08-21 00:35:21 +02:00
parent ae550cc05a
commit f1960febdc
2 changed files with 106 additions and 0 deletions
@@ -233,3 +233,52 @@ TEXT ·f(SB), NOSPLIT, $0
 		t.Fatalf("label rules should be suppressed in macro files: %+v", diags)
 	}
 }
+
+func TestUnusedLabel(t *testing.T) {
+	diags := lintSrc(t, `
+#include "textflag.h"
+TEXT ·f(SB), NOSPLIT, $0
+unused:
+	ADDQ $1, AX
+	RET
+`)
+	if codes(diags)[CodeUnusedLabel] != 1 {
+		t.Fatalf("want one unused-label, got %+v", diags)
+	}
+}
+
+func TestUsedLabelNotFlagged(t *testing.T) {
+	diags := lintSrc(t, `
+#include "textflag.h"
+TEXT ·f(SB), NOSPLIT, $0
+loop:
+	ADDQ $1, AX
+	JMP loop
+	RET
+`)
+	if codes(diags)[CodeUnusedLabel] != 0 {
+		t.Fatalf("used label must not be flagged: %+v", diags)
+	}
+}
+
+func TestInvalidTextflag(t *testing.T) {
+	diags := lintSrc(t, `
+#include "textflag.h"
+TEXT ·f(SB), NOSPLIT|BOGUS, $0
+	RET
+`)
+	if codes(diags)[CodeInvalidFlag] != 1 {
+		t.Fatalf("want one invalid-textflag, got %+v", diags)
+	}
+}
+
+func TestValidTextflags(t *testing.T) {
+	diags := lintSrc(t, `
+#include "textflag.h"
+TEXT ·f(SB), NOSPLIT|NOFRAME|DUPOK, $0
+	RET
+`)
+	if codes(diags)[CodeInvalidFlag] != 0 {
+		t.Fatalf("valid flags must not be flagged: %+v", diags)
+	}
+}