diff --git chromium-75.0.3770.100/base/debug/stack_trace_posix.cc chromium-75.0.3770.100/base/debug/stack_trace_posix.cc
index d4b8b3a..bd26968 100644
--- chromium-75.0.3770.100/base/debug/stack_trace_posix.cc
+++ chromium-75.0.3770.100/base/debug/stack_trace_posix.cc
@@ -27,7 +27,7 @@
 #if !defined(USE_SYMBOLIZE)
 #include <cxxabi.h>
 #endif
-#if !defined(__UCLIBC__) && !defined(_AIX)
+#if defined(__GLIBC__) && !defined(__UCLIBC__) && !defined(_AIX)
 #include <execinfo.h>
 #endif
 
@@ -86,7 +86,7 @@ void DemangleSymbols(std::string* text) {
   // Note: code in this function is NOT async-signal safe (std::string uses
   // malloc internally).
 
-#if !defined(__UCLIBC__) && !defined(_AIX)
+#if defined(__GLIBC__) && !defined(__UCLIBC__) && !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.
@@ -121,7 +121,7 @@ void DemangleSymbols(std::string* text) {
       search_from = mangled_start + 2;
     }
   }
-#endif  // !defined(__UCLIBC__) && !defined(_AIX)
+#endif  // defined(__GLIBC__) && !defined(__UCLIBC__) && !defined(_AIX)
 }
 #endif  // !defined(USE_SYMBOLIZE)
 
@@ -133,7 +133,7 @@ class BacktraceOutputHandler {
   virtual ~BacktraceOutputHandler() = default;
 };
 
-#if !defined(__UCLIBC__) && !defined(_AIX)
+#if defined(__GLIBC__) && !defined(__UCLIBC__) && !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.
@@ -216,7 +216,7 @@ void ProcessBacktrace(void* const* trace,
   }
 #endif  // defined(USE_SYMBOLIZE)
 }
-#endif  // !defined(__UCLIBC__) && !defined(_AIX)
+#endif  // defined(__GLIBC__) && !defined(__UCLIBC__) && !defined(_AIX)
 
 void PrintToStderr(const char* output) {
   // NOTE: This code MUST be async-signal safe (it's used by in-process
@@ -812,7 +812,7 @@ size_t CollectStackTrace(void** trace, size_t count) {
   // 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(__UCLIBC__) && !defined(_AIX)
   // Though the backtrace API man page does not list any possible negative
   // return values, we take no chance.
   return base::saturated_cast<size_t>(backtrace(trace, count));
@@ -825,13 +825,13 @@ void StackTrace::PrintWithPrefix(const char* prefix_string) 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__) && !defined(_AIX)
+#if defined(__GLIBC__) && !defined(__UCLIBC__) && !defined(_AIX)
   PrintBacktraceOutputHandler handler;
   ProcessBacktrace(trace_, count_, prefix_string, &handler);
 #endif
 }
 
-#if !defined(__UCLIBC__) && !defined(_AIX)
+#if defined(__GLIBC__) && !defined(__UCLIBC__) && !defined(_AIX)
 void StackTrace::OutputToStreamWithPrefix(std::ostream* os,
                                           const char* prefix_string) const {
   StreamBacktraceOutputHandler handler(os);
diff --git chromium-69.0.3497.100/third_party/swiftshader/third_party/llvm-subzero/build/Linux/include/llvm/Config/config.h
index e14edbd..dfeca51 100644
--- chromium-69.0.3497.100/third_party/swiftshader/third_party/llvm-subzero/build/Linux/include/llvm/Config/config.h
+++ chromium-69.0.3497.100/third_party/swiftshader/third_party/llvm-subzero/build/Linux/include/llvm/Config/config.h
@@ -14,7 +14,7 @@
 #define ENABLE_CRASH_OVERRIDES 1
 
 /* Define to 1 if you have the `backtrace' function. */
-#define HAVE_BACKTRACE 1
+/* #undef HAVE_BACKTRACE */
 
 /* Define to 1 if you have the <CrashReporterClient.h> header file. */
 /* #undef HAVE_CRASHREPORTERCLIENT_H */
@@ -55,7 +55,7 @@
 #define HAVE_ERRNO_H 1
 
 /* Define to 1 if you have the <execinfo.h> header file. */
-#define HAVE_EXECINFO_H 1
+/* #undef HAVE_EXECINFO_H */
 
 /* Define to 1 if you have the <fcntl.h> header file. */
 #define HAVE_FCNTL_H 1