|  | // RUN: %clang_cc1 -emit-pch -D TWO=2 -D X=4 -o %t %s -triple spir-unknown-unknown | 
|  | // RUN: %clang_cc1 -include-pch %t -D THREE=3 -D X=5 -O0 -U__OPTIMIZE__ -fno-validate-pch %s -triple spir-unknown-unknown 2>&1 | FileCheck %s | 
|  | // RUN: not %clang_cc1 -include-pch %t -D THREE=3 -D X=5 -D VALIDATE -O0 -fsyntax-only %s -triple spir-unknown-unknown 2>&1 | FileCheck --check-prefix=CHECK-VAL %s | 
|  |  | 
|  | #ifndef HEADER | 
|  | #define HEADER | 
|  | // Header. | 
|  |  | 
|  | #define ONE 1 | 
|  |  | 
|  | #else | 
|  | // Using the header. | 
|  |  | 
|  | // CHECK: warning: 'X' macro redefined | 
|  | // CHECK: #define X 5 | 
|  | // CHECK: note: previous definition is here | 
|  | // CHECK: #define X 4 | 
|  |  | 
|  | // CHECK-VAL: error: __OPTIMIZE__ predefined macro was enabled in PCH file but is currently disabled | 
|  | // CHECK-VAL: error: definition of macro 'X' differs between the precompiled header ('4') and the command line ('5') | 
|  |  | 
|  | void test(void) { | 
|  | int a = ONE; | 
|  | int b = TWO; | 
|  | int c = THREE; | 
|  |  | 
|  | #ifndef VALIDATE | 
|  | #if X != 5 | 
|  | #error Definition of X is not overridden! | 
|  | #endif | 
|  |  | 
|  | #ifdef __OPTIMIZE__ | 
|  | #error Optimization is not off! | 
|  | #endif | 
|  | #endif | 
|  |  | 
|  | } | 
|  |  | 
|  | #endif |