asan: Bypass the “nearby PC” check

client/capture_context_mac_test.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 84 matching lines @@
   CaptureContext(&context_1);
 
   {
     SCOPED_TRACE("context_1");
     ASSERT_NO_FATAL_FAILURE(SanityCheckContext(&context_1));
   }
 
   // The program counter reference value is this function’s address. The
   // captured program counter should be slightly greater than or equal to the
   // reference program counter.
+  uintptr_t pc = ProgramCounterFromContext(&context_1);
+#if !__has_feature(address_sanitizer)
+  // AddressSanitizer can cause enough code bloat that the “nearby” check would
+  // likely fail.
   const uintptr_t kReferencePC =
       reinterpret_cast<uintptr_t>(TestCaptureContext);
-  uintptr_t pc = ProgramCounterFromContext(&context_1);
   EXPECT_LT(pc - kReferencePC, 64u);
+#endif
 
   // Declare sp and context_2 here because all local variables need to be
   // declared before computing the stack pointer reference value, so that the
   // reference value can be the lowest value possible.
   uintptr_t sp;
   NativeCPUContext context_2;
 
   // The stack pointer reference value is the lowest address of a local variable
   // in this function. The captured program counter will be slightly less than
   // or equal to the reference stack pointer.
@@ skipping 20 matching lines @@
   EXPECT_GT(ProgramCounterFromContext(&context_2), pc);
 }
 
 TEST(CaptureContextMac, CaptureContext) {
   ASSERT_NO_FATAL_FAILURE(TestCaptureContext());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad