[Frontend] The macro that describes the Objective-C bool type should

be defined for non Objective-C code as well

rdar://29794915

Differential Revision: https://reviews.llvm.org/D28349


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@292617 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Frontend/InitPreprocessor.cpp

@@ -593,9 +593,6 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
         Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS");
     }
 
-    Builder.defineMacro("__OBJC_BOOL_IS_BOOL",
-                        Twine(TI.useSignedCharForObjCBool() ? "0" : "1"));
-
     if (LangOpts.getGC() != LangOptions::NonGC)
       Builder.defineMacro("__OBJC_GC__");
 
@@ -626,6 +623,11 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
     Builder.defineMacro("IB_DESIGNABLE", "");
   }
 
+  // Define a macro that describes the Objective-C boolean type even for C
+  // and C++ since BOOL can be used from non Objective-C code.
+  Builder.defineMacro("__OBJC_BOOL_IS_BOOL",
+                      Twine(TI.useSignedCharForObjCBool() ? "0" : "1"));
+
   if (LangOpts.CPlusPlus)
     InitializeCPlusPlusFeatureTestMacros(LangOpts, Builder);
 

test/Frontend/objc-bool-is-bool.m

@@ -1,6 +1,8 @@
 // RUN: %clang_cc1 -fsyntax-only -E -dM -triple=armv7k-apple-watchos %s | FileCheck --check-prefix=BOOL %s
 // RUN: %clang_cc1 -fsyntax-only -E -dM -triple=x86_64-apple-darwin16 %s | FileCheck --check-prefix=CHAR %s
-// RUN: %clang_cc1 -x c -fsyntax-only -E -dM -triple=x86_64-apple-darwin16 %s | FileCheck --check-prefix=NONE %s
+// RUN: %clang_cc1 -x c -fsyntax-only -E -dM -triple=x86_64-apple-darwin16 %s | FileCheck --check-prefix=CHAR %s
+// RUN: %clang_cc1 -x objective-c++ -fsyntax-only -E -dM -triple=x86_64-apple-darwin16 %s | FileCheck --check-prefix=CHAR %s
+// RUN: %clang_cc1 -x c++ -fsyntax-only -E -dM -triple=x86_64-apple-darwin16 %s | FileCheck --check-prefix=CHAR %s
 
 // rdar://21170440
 
@@ -9,5 +11,3 @@
 
 // CHAR: #define __OBJC_BOOL_IS_BOOL 0
 // CHAR-NOT: #define __OBJC_BOOL_IS_BOOL 1
-
-// NONE-NOT: __OBJC_BOOL_IS_BOOL

test/Preprocessor/init.c

@@ -8705,6 +8705,7 @@
 // WEBASSEMBLY32-NEXT:#define __LONG_MAX__ 2147483647L
 // WEBASSEMBLY32-NOT:#define __LP64__
 // WEBASSEMBLY32-NEXT:#define __NO_INLINE__ 1
+// WEBASSEMBLY32-NEXT:#define __OBJC_BOOL_IS_BOOL 0
 // WEBASSEMBLY32-NEXT:#define __ORDER_BIG_ENDIAN__ 4321
 // WEBASSEMBLY32-NEXT:#define __ORDER_LITTLE_ENDIAN__ 1234
 // WEBASSEMBLY32-NEXT:#define __ORDER_PDP_ENDIAN__ 3412
@@ -9020,6 +9021,7 @@
 // WEBASSEMBLY64-NEXT:#define __LONG_MAX__ 9223372036854775807L
 // WEBASSEMBLY64-NEXT:#define __LP64__ 1
 // WEBASSEMBLY64-NEXT:#define __NO_INLINE__ 1
+// WEBASSEMBLY64-NEXT:#define __OBJC_BOOL_IS_BOOL 0
 // WEBASSEMBLY64-NEXT:#define __ORDER_BIG_ENDIAN__ 4321
 // WEBASSEMBLY64-NEXT:#define __ORDER_LITTLE_ENDIAN__ 1234
 // WEBASSEMBLY64-NEXT:#define __ORDER_PDP_ENDIAN__ 3412