1 files changed, 56 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/other/error15.C b/gcc/testsuite/g++.dg/other/error15.C
new file mode 100644
index 000000000..360185232
--- /dev/null
+++ b/gcc/testsuite/g++.dg/other/error15.C
@@ -0,0 +1,56 @@
+// Test that duplicate function parameters are found in declarations.
+
+extern void g0 (int a, int b);
+extern void g1 (int a, float b);
+
+extern void f0 (int a,		// { dg-error "previous" }
+                int a);		// { dg-error "redefinition" }
+extern void f1 (int a,		// { dg-error "previous" }
+                float a);	// { dg-error "conflicting" }
+extern void f3 (int a, int b, int c, // { dg-error "previous" }
+                int a);		// { dg-error "redefinition" }
+extern void f4 (int a, int b, int c, // { dg-error "previous" }
+                int a,		     // { dg-error "redefinition" }
+                int a);		     // { dg-error "redefinition" }
+extern void f5 (int a, int b, int c, int d, int e, int f, int g, int h, // { dg-error "previous" }
+                int a,							// { dg-error "redefinition" }
+                int i, int j, int k, int l, int m, int n, int o, int p,
+                int q, int r, int s, int t, int u, int v, int w, int x, int y,
+                int z);
+
+extern void f6 (int a, int, int, int, int, int, int, int, int, int, int, // { dg-error "previous" }
+                int a,		// { dg-error "redefinition" }
+                int, int, int, int, int, int, int, int, int, int, int,
+                float, float, float, float, float, float, float, float,
+                int);
+
+extern void f7 (void (*a)(int),	  // { dg-error "previous" }
+                void (*a)(int));  // { dg-error "redefinition" }
+extern void f8 (float (*a)(int),  // { dg-error "previous" }
+                int (*a)(float));  // { dg-error "conflicting" }
+
+extern void f9 (int a,		// { dg-error "previous" }
+                int a,		// { dg-error "redefinition" }
+                int a);		// { dg-error "redefinition" }
+
+extern void f10 (int a,		// { dg-error "previous" }
+                 int b,		// { dg-error "previous" }
+                 int c,		// { dg-error "previous" }
+                 int c,		// { dg-error "redefinition" }
+                 int b,		// { dg-error "redefinition" }
+                 int a);	// { dg-error "redefinition" }
+
+class C1 {
+ public:
+  void C1_g0 (int a, int b);
+  void C1_f0 (int a,		// { dg-error "previous" }
+              int a);		// { dg-error "redefinition" }
+};
+
+template <class T>
+class C2 {
+ public:
+  void C2_g0 (T a, T b);
+  void C2_f0 (T a,		// { dg-error "previous" }
+              T a);		// { dg-error "redefinition" }
+};