1 files changed, 62 insertions, 0 deletions
diff --git a/clang/test/SemaObjC/format-strings-oslog.m b/clang/test/SemaObjC/format-strings-oslog.m
new file mode 100644
index 00000000000..3101a677960
--- /dev/null
+++ b/clang/test/SemaObjC/format-strings-oslog.m
@@ -0,0 +1,62 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+#include <stdarg.h>
+#include <stddef.h>
+#define __need_wint_t
+#include <stddef.h> // For wint_t and wchar_t
+
+int printf(const char *restrict, ...);
+
+@interface NSString
+@end
+
+void test_os_log_format(const char *pc, int i, void *p, void *buf) {
+  __builtin_os_log_format(buf, "");
+  __builtin_os_log_format(buf, "%d"); // expected-warning {{more '%' conversions than data arguments}}
+  __builtin_os_log_format(buf, "%d", i);
+  __builtin_os_log_format(buf, "%P", p); // expected-warning {{using '%P' format specifier without precision}}
+  __builtin_os_log_format(buf, "%.10P", p);
+  __builtin_os_log_format(buf, "%.*P", p); // expected-warning {{field precision should have type 'int', but argument has type 'void *'}}
+  __builtin_os_log_format(buf, "%.*P", i, p);
+  __builtin_os_log_format(buf, "%.*P", i, i); // expected-warning {{format specifies type 'void *' but the argument has type 'int'}}
+  __builtin_os_log_format(buf, "%n");         // expected-error {{os_log() '%n' format specifier is not allowed}}
+  __builtin_os_log_format(buf, pc);           // expected-error {{os_log() format argument is not a string constant}}
+
+  printf("%{private}s", pc); // expected-warning {{using 'private' format specifier annotation outside of os_log()/os_trace()}}
+  __builtin_os_log_format(buf, "%{private}s", pc);
+
+  // <rdar://problem/23835805>
+  __builtin_os_log_format_buffer_size("no-args");
+  __builtin_os_log_format(buf, "%s", "hi");
+
+  // <rdar://problem/24828090>
+  wchar_t wc = 'a';
+  __builtin_os_log_format(buf, "%C", wc);
+  printf("%C", wc);
+  wchar_t wcs[] = {'a', 0};
+  __builtin_os_log_format(buf, "%S", wcs);
+  printf("%S", wcs);
+}
+
+// Test os_log_format primitive with ObjC string literal format argument.
+void test_objc(const char *pc, int i, void *p, void *buf, NSString *nss) {
+  __builtin_os_log_format(buf, @"");
+  __builtin_os_log_format(buf, @"%d"); // expected-warning {{more '%' conversions than data arguments}}
+  __builtin_os_log_format(buf, @"%d", i);
+  __builtin_os_log_format(buf, @"%P", p); // expected-warning {{using '%P' format specifier without precision}}
+  __builtin_os_log_format(buf, @"%.10P", p);
+  __builtin_os_log_format(buf, @"%.*P", p); // expected-warning {{field precision should have type 'int', but argument has type 'void *'}}
+  __builtin_os_log_format(buf, @"%.*P", i, p);
+  __builtin_os_log_format(buf, @"%.*P", i, i); // expected-warning {{format specifies type 'void *' but the argument has type 'int'}}
+
+  __builtin_os_log_format(buf, @"%{private}s", pc);
+  __builtin_os_log_format(buf, @"%@", nss);
+}
+
+// Test the os_log format attribute.
+void MyOSLog(const char *format, ...) __attribute__((format(os_log, 1, 2)));
+void test_attribute(void *p) {
+  MyOSLog("%s\n", "Hello");
+  MyOSLog("%d");    // expected-warning {{more '%' conversions than data arguments}}
+  MyOSLog("%P", p); // expected-warning {{using '%P' format specifier without precision}}
+}