[ASan] Only run dlopen-mixed-c-cxx.c with static runtime

This is what the original bug (http://llvm.org/PR39641) and the fix
in https://reviews.llvm.org/D63877 have been about.
With the dynamic runtime the test only passes when the asan library
is linked against libstdc++: In contrast to libc++abi, it does not
implement __cxa_rethrow_primary_exception so the regex matches the
line saying that asan cannot intercept this function. Indeed, there
is no message that the runtime failed to intercept  __cxa_throw.

Differential Revision: https://reviews.llvm.org/D67298

llvm-svn: 371336

compiler-rt/test/asan/TestCases/Linux/dlopen-mixed-c-cxx.c

@@ -3,9 +3,10 @@
 //
 // RUN: { env ASAN_OPTIONS=verbosity=1 %t.out %t.so || : ; } 2>&1 | FileCheck %s
 //
-// CHECK: {{.*}}AddressSanitizer: failed to intercept '__cxa_{{.*}}throw{{.*}}'
+// CHECK: AddressSanitizer: failed to intercept '__cxa_throw'
 //
-// REQUIRES: x86_64-target-arch && !android
+// This tests assumes static linking of the asan runtime.
+// UNSUPPORTED: asan-dynamic-runtime
 
 #ifdef __cplusplus