[Sema] Revert the change in r200622 that allowed integer casts to silence -Wnon-literal-null-conversion in C code.
It is actually useful to warn in such cases, thanks to Dmitri for pushing on this and making us see the light!
Related to rdar://15925483 and rdar://15922612. The latter radar is where the usefulness of the warning is most clear.
llvm-svn: 201165
diff --git a/clang/test/Sema/warn-null.c b/clang/test/Sema/warn-null.c
index 28ec631..3bf2aed 100644
--- a/clang/test/Sema/warn-null.c
+++ b/clang/test/Sema/warn-null.c
@@ -1,6 +1,6 @@
// RUN: %clang_cc1 %s -verify
-#define NLL (unsigned long long)0
+#define SOME_ADDR (unsigned long long)0
// PR10837: Warn if a non-pointer-typed expression is folded to a null pointer
int *p = 0;
@@ -10,5 +10,5 @@
p = 0;
q = '\0'; // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
r = 1 - 1; // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
- p = NLL;
+ p = SOME_ADDR; // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
}