Implements support of format_arg attribute on C++ member.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149998 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 23 insertions, 1 deletions

diff --git a/test/SemaCXX/format-strings.cpp b/test/SemaCXX/format-strings.cpp
index 4f5b74d170..8b0b00d04e 100644
--- a/test/SemaCXX/format-strings.cpp
+++ b/test/SemaCXX/format-strings.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s
+// RUN: %clang_cc1 -fsyntax-only -verify -Wformat-nonliteral -pedantic %s
 
 extern "C" {
 extern int scanf(const char *restrict, ...);
@@ -17,3 +17,25 @@ void f(char **sp, float *fp) {
 void g() {
   printf("%ls", "foo"); // expected-warning{{format specifies type 'wchar_t *' but the argument has type 'const char *'}}
 }
+
+// Test that we properly handle format_idx on C++ members.
+class Foo {
+public:
+  const char *gettext(const char *fmt) __attribute__((format_arg(2)));
+
+  int scanf(const char *restrict, ...) __attribute__((format(scanf, 2, 3)));
+  int printf(const char *restrict, ...) __attribute__((format(printf, 2, 3)));
+
+  static const char *gettext_static(const char *fmt) __attribute__((format_arg(1)));
+  static int printf_static(const char *restrict, ...) __attribute__((format(printf, 1, 2)));
+};
+
+void h(int *i) {
+  Foo foo;
+  foo.scanf("%d"); // expected-warning{{more '%' conversions than data arguments}}
+  foo.printf("%d", i); // expected-warning{{format specifies type 'int' but the argument has type 'int *'}}
+  Foo::printf_static("%d", i); // expected-warning{{format specifies type 'int' but the argument has type 'int *'}}
+
+  printf(foo.gettext("%d"), i); // expected-warning{{format specifies type 'int' but the argument has type 'int *'}}
+  printf(Foo::gettext_static("%d"), i); // expected-warning{{format specifies type 'int' but the argument has type 'int *'}}
+}