Revert r135075, "format string checking: long and int have the same widths on 32-bit, so we shouldn't warn about using"

It fails on freebsd, mingw and msvc10.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135129 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/FormatString.cpp

@@ -206,10 +206,6 @@ clang::analyze_format_string::ParseLengthModifier(FormatSpecifier &FS,
 // Methods on ArgTypeResult.
 //===----------------------------------------------------------------------===//
 
-static bool hasSameSize(ASTContext &astContext, QualType typeA, QualType typeB) {
-  return astContext.getTypeSize(typeA) == astContext.getTypeSize(typeB);
-}
-
 bool ArgTypeResult::matchesType(ASTContext &C, QualType argTy) const {
   switch (K) {
     case InvalidTy:
@@ -230,21 +226,26 @@ bool ArgTypeResult::matchesType(ASTContext &C, QualType argTy) const {
             break;
           case BuiltinType::Char_S:
           case BuiltinType::SChar:
+            return T == C.UnsignedCharTy;
           case BuiltinType::Char_U:
           case BuiltinType::UChar:                    
-            return hasSameSize(C, T, C.UnsignedCharTy);            
+            return T == C.SignedCharTy;
           case BuiltinType::Short:
+            return T == C.UnsignedShortTy;
           case BuiltinType::UShort:
-            return hasSameSize(C, T, C.ShortTy);
+            return T == C.ShortTy;
           case BuiltinType::Int:
+            return T == C.UnsignedIntTy;
           case BuiltinType::UInt:
-            return hasSameSize(C, T, C.IntTy);
+            return T == C.IntTy;
           case BuiltinType::Long:
+            return T == C.UnsignedLongTy;
           case BuiltinType::ULong:
-            return hasSameSize(C, T, C.LongTy);
+            return T == C.LongTy;
           case BuiltinType::LongLong:
+            return T == C.UnsignedLongLongTy;
           case BuiltinType::ULongLong:
-            return hasSameSize(C, T, C.LongLongTy);
+            return T == C.LongLongTy;
         }
       return false;
     }

test/Sema/format-strings-i386.c

@@ -1,14 +0,0 @@
-// RUN: %clang_cc1 -triple i386-apple-macosx10.7.0 -fsyntax-only -verify -Wformat-nonliteral %s
-
-int printf(const char *restrict, ...);
-
-// Test that 'long' is compatible with 'int' on 32-bit.
-typedef unsigned int UInt32;
-void test_rdar_9763999() {
- UInt32 x = 7;
- printf("x = %u\n", x); // no-warning
-}
-
-void test_positive() {
-  printf("%d", "hello"); // expected-warning {{conversion specifies type 'int' but the argument has type 'char *'}}
-}