GN: aix port along with linux_s390x, linux_ppc64 and linux_ppc64le support.

base/debug/stack_trace.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/debug/stack_trace.h"
 
 #include <string.h>
 
 #include <algorithm>
 #include <sstream>
@@ skipping 196 matching lines @@
 
 const void *const *StackTrace::Addresses(size_t* count) const {
   *count = count_;
   if (count_)
     return trace_;
   return NULL;
 }
 
 std::string StackTrace::ToString() const {
   std::stringstream stream;
-#if !defined(__UCLIBC__)
+#if !defined(__UCLIBC__) && !defined(_AIX)
   OutputToStream(&stream);
 #endif
   return stream.str();
 }
 
 #if BUILDFLAG(CAN_UNWIND_WITH_FRAME_POINTERS)
 
 size_t TraceStackFramePointers(const void** out_trace,
                                size_t max_depth,
                                size_t skip_initial) {
@@ skipping 40 matching lines @@
 ScopedStackFrameLinker::~ScopedStackFrameLinker() {
   void* previous_parent_fp = LinkStackFrames(fp_, original_parent_fp_);
   CHECK_EQ(parent_fp_, previous_parent_fp)
       << "Stack frame's parent pointer has changed!";
 }
 
 #endif  // BUILDFLAG(CAN_UNWIND_WITH_FRAME_POINTERS)
 
 }  // namespace debug
 }  // namespace base