tools/syz-linter: add check for dup types in func args

Add check for:

func foo(a int, b int) -> func foo(a, b int)

Update #1876

1 files changed, 17 insertions, 3 deletions

diff --git a/tools/syz-linter/testdata/src/lintertest/lintertest.go b/tools/syz-linter/testdata/src/lintertest/lintertest.go
index 2c70a97e8..69b956e80 100644
--- a/tools/syz-linter/testdata/src/lintertest/lintertest.go
+++ b/tools/syz-linter/testdata/src/lintertest/lintertest.go
@@ -23,8 +23,22 @@ func returnString() string { return "foo" }
 //  Two spaces.
 //	One tab.
 //		Two tabs.
-//No space.					// want "Use either //<one-or-more-spaces>comment or //<one-or-more-tabs>comment format for comments"
-//	  Tab and spaces.			// want "Use either //<one-or-more-spaces>comment or //<one-or-more-tabs>comment format for comments"
-// 	Space and tab.				// want "Use either //<one-or-more-spaces>comment or //<one-or-more-tabs>comment format for comments"
+//No space.			// want "Use either //<one-or-more-spaces>comment or //<one-or-more-tabs>comment format for comments"
+//	  Tab and spaces.	// want "Use either //<one-or-more-spaces>comment or //<one-or-more-tabs>comment format for comments"
+// 	Space and tab.		// want "Use either //<one-or-more-spaces>comment or //<one-or-more-tabs>comment format for comments"
 func checkCommentSpace() {
 }
+
+func funcArgsGood(a, b int) (int, int) {
+	return 0, 0
+}
+
+func funcArgsBad0(a int, b int) { // want "Use 'a, b int'"
+}
+
+func funcArgsBad1() (a int, b int) { // want "Use 'a, b int'"
+	return 0, 0
+}
+
+func funcArgsBad2(a int16, b, c uint32, d uint32, e int16) { // want "Use 'b, c, d uint32'"
+}