[Objective-C]. Provide a new formatting kind, "os_trace" which

can take a "const char*" format but supports standard printf 
and CF/NS types . rdar://19904147

llvm-svn: 230109

1 files changed, 54 insertions, 0 deletions

diff --git a/clang/test/SemaObjC/format-ostrace-warning.m b/clang/test/SemaObjC/format-ostrace-warning.m
new file mode 100644
index 00000000000..c749881c7a8
--- /dev/null
+++ b/clang/test/SemaObjC/format-ostrace-warning.m
@@ -0,0 +1,54 @@
+// RUN: %clang_cc1 -Wcstring-format-directive -verify -fsyntax-only %s
+// rdar://19904147
+
+typedef __builtin_va_list __darwin_va_list;
+typedef __builtin_va_list va_list;
+
+va_list argList;
+
+typedef const struct __CFString * CFStringRef;
+typedef struct __CFString * CFMutableStringRef;
+typedef const struct __CFAllocator * CFAllocatorRef;
+
+
+typedef const struct __CFDictionary * CFDictionaryRef;
+
+CFStringRef CFSTR ( const char *cStr );
+
+
+extern
+CFStringRef CStringCreateWithFormat(CFAllocatorRef alloc, CFDictionaryRef formatOptions, const char* format, ...) __attribute__((format(os_trace, 3, 4)));
+
+extern
+CFStringRef CStringCreateWithFormatAndArguments(CFAllocatorRef alloc, CFDictionaryRef formatOptions, const char* format, va_list arguments) __attribute__((format(os_trace, 3, 0)));
+
+extern
+void CStringAppendFormat(CFMutableStringRef theString, CFDictionaryRef formatOptions, const char* format, ...) __attribute__((format(os_trace, 3, 4)));
+
+extern
+void CStringAppendFormatAndArguments(CFMutableStringRef theString, CFDictionaryRef formatOptions, const char* format, va_list arguments) __attribute__((format(os_trace, 3, 0)));
+
+void Test1(va_list argList) {
+  CFAllocatorRef alloc;
+  CStringCreateWithFormatAndArguments (alloc, 0, "%s\n", argList);
+  CStringAppendFormatAndArguments ((CFMutableStringRef)@"AAAA", 0, "Hello %s there %d\n", argList);
+  CStringCreateWithFormatAndArguments (alloc, 0, "%c\n", argList);
+  CStringAppendFormatAndArguments ((CFMutableStringRef)@"AAAA", 0, "%d\n", argList);
+}
+
+extern void MyOSLog(const char* format, ...) __attribute__((format(os_trace, 1, 2)));
+extern void MyFStringCreateWithFormat(const char *format, ...) __attribute__((format(os_trace, 1, 2)));
+extern void XMyOSLog(int, const char* format, ...) __attribute__((format(os_trace, 2, 3)));
+extern void os_trace(const char *format, ...) __attribute__((format(os_trace, 1, 2)));
+
+void Test2() {
+  MyOSLog("%s\n", "Hello");
+
+  MyFStringCreateWithFormat("%s", "Hello"); 
+  XMyOSLog(4, "%s\n", "Hello");
+
+  os_trace("testing %@, %s, %d, %@, %m", CFSTR("object"), "string", 3, "it"); // expected-warning {{format specifies type 'id' but the argument has type 'char *'}}
+
+  os_trace("testing %@, %s, %d, %@, %m", CFSTR("object"), "string", 3, @"ok");
+}
+