1 files changed, 70 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/c11-typedef-1.c b/gcc-4.9/gcc/testsuite/gcc.dg/c11-typedef-1.c
new file mode 100644
index 000000000..3224ba5a4
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/c11-typedef-1.c
@@ -0,0 +1,70 @@
+/* Test typedef redeclaration in C11.  */
+/* { dg-do compile } */
+/* { dg-options "-std=c11 -pedantic-errors" } */
+
+/* C11 permits typedefs to be redeclared to the same type, but not to
+   different-but-compatible types, and not when the type is variably
+   modified.  */
+
+#include <limits.h>
+
+typedef int TI;
+typedef int TI2;
+typedef TI2 TI;
+typedef TI TI2;
+
+enum e { E1 = 0, E2 = INT_MAX, E3 = -1 };
+typedef enum e TE;
+typedef enum e TE; /* { dg-message "previous declaration" } */
+typedef int TE; /* { dg-error "with different type" } */
+
+struct s;
+typedef struct s TS;
+struct s { int i; };
+typedef struct s TS;
+
+typedef int IA[];
+typedef TI2 IA[]; /* { dg-message "previous declaration" } */
+typedef int A2[2];
+typedef TI A2[2]; /* { dg-message "previous declaration" } */
+typedef IA A2; /* { dg-error "with different type" } */
+typedef int A3[3];
+typedef A3 IA; /* { dg-error "with different type" } */
+
+typedef void F(int);
+typedef void F(TI); /* { dg-message "previous declaration" } */
+typedef void F(enum e); /* { dg-error "with different type" } */
+
+typedef int G(void);
+typedef TI G(void); /* { dg-message "previous declaration" } */
+typedef enum e G(void); /* { dg-error "with different type" } */
+
+typedef int *P;
+typedef TI *P; /* { dg-message "previous declaration" } */
+typedef enum e *P; /* { dg-error "with different type" } */
+
+typedef void F2();
+typedef void F2(); /* { dg-message "previous declaration" } */
+typedef void F2(int); /* { dg-error "with different type" } */
+
+void
+f (void)
+{
+  int a = 1;
+  int b = 2;
+  typedef void FN(int (*p)[a]);
+  typedef void FN(int (*p)[b]);
+  typedef void FN(int (*p)[*]); /* { dg-message "previous declaration" } */
+  typedef void FN(int (*p)[1]); /* { dg-error "with different type" } */
+  typedef void FN2(int (*p)[a]);
+  typedef void FN2(int (*p)[b]);
+  typedef void FN2(int (*p)[*]); /* { dg-message "previous declaration" } */
+  typedef void FN2(int (*p)[]); /* { dg-error "with different type" } */
+  typedef int AV[a]; /* { dg-message "previous declaration" } */
+  typedef int AV[b-1]; /* { dg-error "redefinition" } */
+  typedef int AAa[a]; /* { dg-message "previous declaration" } */
+  typedef int AAb[b-1];
+  typedef AAa *VF(void); /* { dg-message "previous declaration" } */
+  typedef AAb *VF(void); /* { dg-error "redefinition" } */
+  typedef AAa AAa; /* { dg-error "redefinition" } */
+}