1 files changed, 41 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cast-1.c b/gcc/testsuite/gcc.dg/cast-1.c
new file mode 100644
index 00000000000..e3d79db6be2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cast-1.c
@@ -0,0 +1,41 @@
+/* Test diagnostics for bad or doubtful casts.  Test with no special
+   options.  */
+/* Origin: Joseph Myers <joseph@codesourcery.com> */
+/* { dg-do compile } */
+/* { dg-options "-std=gnu99" } */
+
+struct s { int a; } sv;
+union u { int a; } uv;
+int i;
+long l;
+char c;
+void *p;
+float fv;
+
+void
+f (void)
+{
+  (int []) p; /* { dg-error "error: cast specifies array type" } */
+  (int ()) p; /* { dg-error "error: cast specifies function type" } */
+  (struct s) sv;
+  (union u) uv;
+  (struct s) i; /* { dg-error "error: conversion to non-scalar type requested" } */
+  (union u) i;
+  (union u) l; /* { dg-error "error: cast to union type from type not present in union" } */
+  (int) sv; /* { dg-error "error: aggregate value used where an integer was expected" } */
+  (int) uv; /* { dg-error "error: aggregate value used where an integer was expected" } */
+  (float) sv; /* { dg-error "error: aggregate value used where a float was expected" } */
+  (float) uv; /* { dg-error "error: aggregate value used where a float was expected" } */
+  (_Complex double) sv; /* { dg-error "error: aggregate value used where a complex was expected" } */
+  (_Complex double) uv; /* { dg-error "error: aggregate value used where a complex was expected" } */
+  (void *) sv; /* { dg-error "error: cannot convert to a pointer type" } */
+  (void *) uv; /* { dg-error "error: cannot convert to a pointer type" } */
+  (_Bool) sv; /* { dg-error "error: used struct type value where scalar is required" } */
+  (_Bool) uv; /* { dg-error "error: used union type value where scalar is required" } */
+  (void) sv;
+  (const void) uv;
+  (void *) c; /* { dg-warning "warning: cast to pointer from integer of different size" } */
+  (void *) (char) 1;
+  (char) p; /* { dg-warning "warning: cast from pointer to integer of different size" } */
+  (char) (void *) 1;
+}