--- base/debug/stack_trace_posix.cc.orig	2017-07-27 14:05:05.534241443 +0000
+++ base/debug/stack_trace_posix.cc	2017-07-27 14:07:54.669231362 +0000
@@ -26,7 +26,7 @@
 #if !defined(USE_SYMBOLIZE)
 #include <cxxabi.h>
 #endif
-#if !defined(__UCLIBC__) && !defined(_AIX)
+#if defined(__GLIBC__) && !defined(_AIX)
 #include <execinfo.h>
 #endif
 
@@ -80,7 +80,7 @@
   // Note: code in this function is NOT async-signal safe (std::string uses
   // malloc internally).
 
-#if !defined(__UCLIBC__) && !defined(_AIX)
+#if defined(__GLIBC__) && !defined(_AIX)
   std::string::size_type search_from = 0;
   while (search_from < text->size()) {
     // Look for the start of a mangled symbol, from search_from.
@@ -115,7 +115,7 @@
       search_from = mangled_start + 2;
     }
   }
-#endif  // !defined(__UCLIBC__) && !defined(_AIX)
+#endif  // defined(__GLIBC__) && !defined(_AIX)
 }
 #endif  // !defined(USE_SYMBOLIZE)
 
@@ -127,7 +127,7 @@
   virtual ~BacktraceOutputHandler() {}
 };
 
-#if !defined(__UCLIBC__) && !defined(_AIX)
+#if defined(__GLIBC__) && !defined(_AIX)
 void OutputPointer(void* pointer, BacktraceOutputHandler* handler) {
   // This should be more than enough to store a 64-bit number in hex:
   // 16 hex digits + 1 for null-terminator.
@@ -204,7 +204,7 @@
   }
 #endif  // defined(USE_SYMBOLIZE)
 }
-#endif  // !defined(__UCLIBC__) && !defined(_AIX)
+#endif  // defined(__GLIBC__) && !defined(_AIX)
 
 void PrintToStderr(const char* output) {
   // NOTE: This code MUST be async-signal safe (it's used by in-process
@@ -721,7 +721,7 @@
 // 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__) && !defined(_AIX)
+#if defined(__GLIBC__) && !defined(_AIX)
   count = std::min(arraysize(trace_), count);
 
   // Though the backtrace API man page does not list any possible negative
@@ -827,13 +827,13 @@
 // 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__) && !defined(_AIX)
+#if defined(__GLIBC__) && !defined(_AIX)
   PrintBacktraceOutputHandler handler;
   ProcessBacktrace(trace_, count_, prefix_string, &handler);
 #endif
 }
 
-#if !defined(__UCLIBC__) && !defined(_AIX)
+#if defined(__GLIBC__) && !defined(_AIX)
 void StackTrace::OutputToStreamWithPrefix(std::ostream* os,
                                           const char* prefix_string) const {
   StreamBacktraceOutputHandler handler(os);
--- third_party/blink/renderer/platform/wtf/assertions.cc.orig	2017-09-11 12:27:06.948854813 +0000
+++ third_party/blink/renderer/platform/wtf/assertions.cc	2017-09-11 12:29:34.639862433 +0000
@@ -56,7 +56,7 @@
 #include <windows.h>
 #endif
 
-#if defined(OS_MACOSX) || (defined(OS_LINUX) && !defined(__UCLIBC__))
+#if defined(OS_MACOSX) || (defined(OS_LINUX) && defined(__GLIBC__))
 #include <cxxabi.h>
 #include <dlfcn.h>
 #include <execinfo.h>