Warn about comparisons between arrays and improve self-comparison

warnings, from Troy Straszheim! Fixes PR6163.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105631 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 2 deletions

diff --git a/test/Sema/compare.c b/test/Sema/compare.c
index f997dc1a73..b2c3563395 100644
--- a/test/Sema/compare.c
+++ b/test/Sema/compare.c
@@ -3,7 +3,7 @@
 int test(char *C) { // nothing here should warn.
   return C != ((void*)0);
   return C != (void*)0;
-  return C != 0;  
+  return C != 0;
   return C != 1;  // expected-warning {{comparison between pointer and integer ('char *' and 'int')}}
 }
 
@@ -218,7 +218,7 @@ int pointers(int *a) {
 
 int function_pointers(int (*a)(int), int (*b)(int), void (*c)(int)) {
   return a > b; // expected-warning {{ordered comparison of function pointers}}
-  return function_pointers > function_pointers; // expected-warning {{ordered comparison of function pointers}}
+  return function_pointers > function_pointers; // expected-warning {{self-comparison always evaluates to false}} expected-warning{{ordered comparison of function pointers}}
   return a > c; // expected-warning {{comparison of distinct pointer types}}
   return a == (void *) 0;
   return a == (void *) 1; // expected-warning {{equality comparison between function pointer and void pointer}}
@@ -229,6 +229,7 @@ int void_pointers(void* foo) {
   return foo == (void*) 1;
 }
 
+
 int test1(int i) {
   enum en { zero };
   return i > zero;