stub out debug::StackTrace().Print() when using uclibc

base/debug/stack_trace_posix.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 <errno.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <stdio.h>
@@ skipping 263 matching lines @@
       PrintToStderr(" <unknown> ");
   }
   if (signal == SIGBUS || signal == SIGFPE ||
       signal == SIGILL || signal == SIGSEGV) {
     internal::itoa_r(reinterpret_cast<intptr_t>(info->si_addr),
                      buf, sizeof(buf), 16, 12);
     PrintToStderr(buf);
   }
   PrintToStderr("\n");
 
-#if !defined(__UCLIBC__)
   debug::StackTrace().Print();
-#endif
 
 #if defined(OS_LINUX)
 #if ARCH_CPU_X86_FAMILY
   ucontext_t* context = reinterpret_cast<ucontext_t*>(void_context);
   const struct {
     const char* label;
     greg_t value;
   } registers[] = {
 #if ARCH_CPU_32_BITS
     { "  gs: ", context->uc_mcontext.gregs[REG_GS] },
@@ skipping 447 matching lines @@
 
 #if !defined(__UCLIBC__)
   // Though the backtrace API man page does not list any possible negative
   // return values, we take no chance.
   count_ = base::saturated_cast<size_t>(backtrace(trace_, arraysize(trace_)));
 #else
   count_ = 0;
 #endif
 }
 
+void StackTrace::Print() const {
+  // NOTE: This code MUST be async-signal safe (it's used by in-process
+  // stack dumping signal handler). NO malloc or stdio is allowed here.
+
+#if !defined(__UCLIBC__)
+  PrintBacktraceOutputHandler handler;
+  ProcessBacktrace(trace_, count_, &handler);
+#endif
+}
+
 #if !defined(__UCLIBC__)
-void StackTrace::Print() const {
-  // NOTE: This code MUST be async-signal safe (it's used by in-process
-  // stack dumping signal handler). NO malloc or stdio is allowed here.
-
-  PrintBacktraceOutputHandler handler;
-  ProcessBacktrace(trace_, count_, &handler);
-}
-
 void StackTrace::OutputToStream(std::ostream* os) const {
   StreamBacktraceOutputHandler handler(os);
   ProcessBacktrace(trace_, count_, &handler);
 }
 #endif
 
 namespace internal {
 
 // NOTE: code from sandbox/linux/seccomp-bpf/demo.cc.
 char *itoa_r(intptr_t i, char *buf, size_t sz, int base, size_t padding) {
@@ skipping 53 matching lines @@
     *ptr = *start;
     *start++ = ch;
   }
   return buf;
 }
 
 }  // namespace internal
 
 }  // namespace debug
 }  // namespace base