Make test/Driver hermetic

[jfb]

Summary

The includes shouldn't be there, use the compiler's built-in types/macros instead.

This is a follow-up to r217694, as discussed in:

http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20140908/114669.html

[jfb]

Closed by commit rL217743 (authored by @jfb).

[chandlerc]

Heh, i mean, LGTM... Not sure why you sent for review and then immediately committed?

[jfb]

As an FYI, since we agreed on the previous thread.

cfe/trunk/test/Driver/le32-unknown-nacl.cpp

 // RUN: %clang -target le32-unknown-nacl -### %s -emit-llvm-only -c 2>&1 | FileCheck %s -check-prefix=ECHO
 // RUN: %clang -target le32-unknown-nacl %s -emit-llvm -S -c -o - | FileCheck %s
 // RUN: %clang -target le32-unknown-nacl %s -emit-llvm -S -c -pthread -o - | FileCheck %s -check-prefix=THREADS
 
 // ECHO: {{.*}} "-cc1" {{.*}}le32-unknown-nacl.c
 
-// Check platform defines
-#include <stdarg.h>
-#include <stddef.h>
+typedef __builtin_va_list va_list;
+typedef __SIZE_TYPE__ size_t;
+typedef __PTRDIFF_TYPE__ ptrdiff_t;
 
 extern "C" {
 
 // CHECK: @align_c = global i32 1
 int align_c = __alignof(char);
 
 // CHECK: @align_s = global i32 2
 int align_s = __alignof(short);

cfe/trunk/test/Driver/le64-unknown-unknown.cpp

 // RUN: %clang -target le64-unknown-unknown -### %s -emit-llvm-only -c 2>&1 | FileCheck %s -check-prefix=ECHO
 // RUN: %clang -target le64-unknown-unknown %s -emit-llvm -S -c -o - | FileCheck %s
 
 // ECHO: {{.*}} "-cc1" {{.*}}le64-unknown-unknown.c
 
-// Check platform defines
-#include <stdarg.h>
-#include <stddef.h>
+typedef __builtin_va_list va_list;
+typedef __SIZE_TYPE__ size_t;
+typedef __PTRDIFF_TYPE__ ptrdiff_t;
 
 extern "C" {
 
 // CHECK: @align_c = global i32 1
 int align_c = __alignof(char);
 
 // CHECK: @align_s = global i32 2
 int align_s = __alignof(short);