Fix __crashreport_info__ declaration.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104301 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index 5db4f2b..c93adaf 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -48,7 +48,8 @@
 #define USE_CRASHTRACER
 #include "clang/Analysis/Support/SaveAndRestore.h"
 // Integrate with crash reporter.
-extern "C" const char *__crashreporter_info__;
+static const char *__crashreporter_info__ = 0;
+asm(".desc ___crashreporter_info__, 0x10");
 #define NUM_CRASH_STRINGS 32
 static unsigned crashtracer_counter = 0;
 static unsigned crashtracer_counter_id[NUM_CRASH_STRINGS] = { 0 };