Merge branch 'master' of ssh://bitbucket.org/czan/honours

1 files changed, 188 insertions, 0 deletions

diff --git a/clang/test/SemaObjC/format-strings-objc.m b/clang/test/SemaObjC/format-strings-objc.m
new file mode 100644
index 0000000..987889b
--- /dev/null
+++ b/clang/test/SemaObjC/format-strings-objc.m
@@ -0,0 +1,188 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin -Wformat-nonliteral -fsyntax-only -fblocks -verify -Wno-objc-root-class %s
+
+//===----------------------------------------------------------------------===//
+// The following code is reduced using delta-debugging from
+// Foundation.h (Mac OS X).
+//
+// It includes the basic definitions for the test cases below.
+// Not including Foundation.h directly makes this test case both svelt and
+// portable to non-Mac platforms.
+//===----------------------------------------------------------------------===//
+
+#include <stdarg.h>
+
+typedef signed char BOOL;
+typedef unsigned int NSUInteger;
+@class NSString, Protocol;
+extern void NSLog(NSString *format, ...);
+extern void NSLogv(NSString *format, va_list args);
+typedef struct _NSZone NSZone;
+@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
+@protocol NSObject  - (BOOL)isEqual:(id)object; @end
+@protocol NSCopying  - (id)copyWithZone:(NSZone *)zone; @end
+@protocol NSMutableCopying  - (id)mutableCopyWithZone:(NSZone *)zone; @end
+@protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder; @end
+@interface NSObject <NSObject> {} @end
+typedef float CGFloat;
+@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding>    - (NSUInteger)length; @end
+@interface NSSimpleCString : NSString {} @end
+@interface NSConstantString : NSSimpleCString @end
+extern void *_NSConstantStringClassReference;
+
+typedef const struct __CFString * CFStringRef;
+extern void CFStringCreateWithFormat(CFStringRef format, ...) __attribute__((format(CFString, 1, 2)));
+
+int printf(const char * restrict, ...) ;
+
+//===----------------------------------------------------------------------===//
+// Test cases.
+//===----------------------------------------------------------------------===//
+
+void check_nslog(unsigned k) {
+  NSLog(@"%d%%", k); // no-warning
+  NSLog(@"%s%lb%d", "unix", 10,20); // expected-warning {{invalid conversion specifier 'b'}}
+}
+
+// Check type validation
+extern void NSLog2(int format, ...) __attribute__((format(__NSString__, 1, 2))); // expected-error {{format argument not an NSString}}
+extern void CFStringCreateWithFormat2(int *format, ...) __attribute__((format(CFString, 1, 2))); // expected-error {{format argument not a CFString}}
+
+// <rdar://problem/7068334> - Catch use of long long with int arguments.
+void rdar_7068334() {
+  long long test = 500;  
+  printf("%i ",test); // expected-warning{{format specifies type 'int' but the argument has type 'long long'}}
+  NSLog(@"%i ",test); // expected-warning{{format specifies type 'int' but the argument has type 'long long'}}
+}
+
+// <rdar://problem/7697748>
+void rdar_7697748() {
+  NSLog(@"%@!"); // expected-warning{{more '%' conversions than data arguments}}
+}
+
+@protocol Foo;
+
+void test_p_conversion_with_objc_pointer(id x, id<Foo> y) {
+  printf("%p", x); // no-warning
+  printf("%p", y); // no-warning
+}
+
+// <rdar://problem/10696348>, PR 10274 - CFString and NSString formats are ignored
+extern void MyNSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));
+extern void MyCFStringCreateWithFormat(CFStringRef format, ...) __attribute__((format(__CFString__, 1, 2)));
+
+void check_mylog() {
+  MyNSLog(@"%@"); // expected-warning {{more '%' conversions than data arguments}}
+  // FIXME: find a way to test CFString too, but I don't know how to create constant CFString.
+}
+
+// PR 10275 - format function attribute isn't checked in Objective-C methods
+@interface Foo
++ (id)fooWithFormat:(NSString *)fmt, ... __attribute__((format(__NSString__, 1, 2)));
++ (id)fooWithCStringFormat:(const char *)format, ... __attribute__((format(__printf__, 1, 2)));
+@end
+
+void check_method() {
+  [Foo fooWithFormat:@"%@"]; // expected-warning {{more '%' conversions than data arguments}}
+  [Foo fooWithCStringFormat:"%@"]; // expected-warning {{invalid conversion specifier '@'}}
+}
+
+// Warn about using BOOL with %@
+void rdar10743758(id x) {
+  NSLog(@"%@ %@", x, (BOOL) 1); // expected-warning {{format specifies type 'id' but the argument has type 'BOOL' (aka 'signed char')}}
+}
+
+NSString *test_literal_propagation(void) {
+  const char * const s1 = "constant string %s"; // expected-note {{format string is defined here}}
+  printf(s1); // expected-warning {{more '%' conversions than data arguments}}
+  const char * const s5 = "constant string %s"; // expected-note {{format string is defined here}}
+  const char * const s2 = s5;
+  printf(s2); // expected-warning {{more '%' conversions than data arguments}}
+
+  const char * const s3 = (const char *)0;
+  printf(s3); // no-warning (NULL is a valid format string)
+
+  NSString * const ns1 = @"constant string %s"; // expected-note {{format string is defined here}}
+  NSLog(ns1); // expected-warning {{more '%' conversions than data arguments}}
+  NSString * const ns5 = @"constant string %s"; // expected-note {{format string is defined here}}
+  NSString * const ns2 = ns5;
+  NSLog(ns2); // expected-warning {{more '%' conversions than data arguments}}
+  NSString * ns3 = ns1;
+  NSLog(ns3); // expected-warning {{format string is not a string literal}}}
+}
+
+// Do not emit warnings when using NSLocalizedString
+extern NSString *GetLocalizedString(NSString *str);
+#define NSLocalizedString(key) GetLocalizedString(key)
+
+void check_NSLocalizedString() {
+  [Foo fooWithFormat:NSLocalizedString(@"format"), @"arg"]; // no-warning
+}
+
+typedef __WCHAR_TYPE__ wchar_t;
+
+// Test that %S, %C, %ls check for 16 bit types in ObjC strings, as described at
+// http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/Strings/Articles/formatSpecifiers.html#//apple_ref/doc/uid/TP40004265
+
+void test_percent_S() {
+  const unsigned short data[] = { 'a', 'b', 0 };
+  const unsigned short* ptr = data;
+  NSLog(@"%S", ptr);  // no-warning
+
+  const wchar_t* wchar_ptr = L"ab";
+  NSLog(@"%S", wchar_ptr);  // expected-warning{{format specifies type 'const unsigned short *' but the argument has type 'const wchar_t *'}}
+}
+
+void test_percent_ls() {
+  const unsigned short data[] = { 'a', 'b', 0 };
+  const unsigned short* ptr = data;
+  NSLog(@"%ls", ptr);  // no-warning
+
+  const wchar_t* wchar_ptr = L"ab";
+  NSLog(@"%ls", wchar_ptr);  // expected-warning{{format specifies type 'const unsigned short *' but the argument has type 'const wchar_t *'}}
+}
+
+void test_percent_C() {
+  const unsigned short data = 'a';
+  NSLog(@"%C", data);  // no-warning
+
+  const wchar_t wchar_data = L'a';
+  NSLog(@"%C", wchar_data);  // expected-warning{{format specifies type 'unsigned short' but the argument has type 'wchar_t'}}
+}
+
+// Test that %@ works with toll-free bridging (<rdar://problem/10814120>).
+void test_toll_free_bridging(CFStringRef x) {
+  NSLog(@"%@", x); // no-warning
+}
+
+@interface Bar
++ (void)log:(NSString *)fmt, ...;
++ (void)log2:(NSString *)fmt, ... __attribute__((format(NSString, 1, 2)));
+@end
+
+@implementation Bar
+
++ (void)log:(NSString *)fmt, ... {
+  va_list ap;
+  va_start(ap,fmt);
+  NSLogv(fmt, ap); // expected-warning{{format string is not a string literal}}
+  va_end(ap);
+}
+
++ (void)log2:(NSString *)fmt, ... {
+  va_list ap;
+  va_start(ap,fmt);
+  NSLogv(fmt, ap); // no-warning
+  va_end(ap);
+}
+
+@end
+
+
+// Test that it is okay to use %p with the address of a block.
+void rdar11049844_aux();
+int rdar11049844() {
+  typedef void (^MyBlock)(void);
+  MyBlock x = ^void() { rdar11049844_aux(); };
+  printf("%p", x);  // no-warning
+}
+