Emit a warning when the body of an if block is a NullStmt.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@42840 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Parser/pointer_promotion.c b/test/Parser/pointer_promotion.c
index 9d9a526..8d2e6e7 100644
--- a/test/Parser/pointer_promotion.c
+++ b/test/Parser/pointer_promotion.c
@@ -8,11 +8,11 @@
struct bar *bp;
short sint = 7;
- if (ip < cp) ; // expected-warning {{comparison of distinct pointer types ('int *' and 'char *')}}
- if (cp < fp) ; // expected-warning {{comparison of distinct pointer types ('char *' and 'struct foo *')}}
- if (fp < bp) ; // expected-warning {{comparison of distinct pointer types ('struct foo *' and 'struct bar *')}}
- if (ip < 7) ; // expected-warning {{comparison between pointer and integer ('int *' and 'int')}}
- if (sint < ip) ; // expected-warning {{comparison between pointer and integer ('int' and 'int *')}}
- if (ip == cp) ; // expected-warning {{comparison of distinct pointer types ('int *' and 'char *')}}
+ if (ip < cp) {} // expected-warning {{comparison of distinct pointer types ('int *' and 'char *')}}
+ if (cp < fp) {} // expected-warning {{comparison of distinct pointer types ('char *' and 'struct foo *')}}
+ if (fp < bp) {} // expected-warning {{comparison of distinct pointer types ('struct foo *' and 'struct bar *')}}
+ if (ip < 7) {} // expected-warning {{comparison between pointer and integer ('int *' and 'int')}}
+ if (sint < ip) {} // expected-warning {{comparison between pointer and integer ('int' and 'int *')}}
+ if (ip == cp) {} // expected-warning {{comparison of distinct pointer types ('int *' and 'char *')}}
}
diff --git a/test/Sema/default.c b/test/Sema/default.c
index b51ab9a..92f7278 100644
--- a/test/Sema/default.c
+++ b/test/Sema/default.c
@@ -3,6 +3,6 @@
void f5 (int z) {
if (z)
default: // expected-error {{not in switch statement}}
- ;
+ ; // expected-warning {{if statement has empty body}}
}
diff --git a/test/Sema/if-empty-body.c b/test/Sema/if-empty-body.c
new file mode 100644
index 0000000..1dc9e44
--- /dev/null
+++ b/test/Sema/if-empty-body.c
@@ -0,0 +1,9 @@
+// RUN: clang -parse-ast -verify %s
+
+void f1(int a) {
+ if (a); // expected-warning {{if statement has empty body}}
+}
+
+void f2(int a) {
+ if (a) {}
+}