Source: https://bugzilla.mozilla.org/show_bug.cgi?id=1533969
From: Emilio Cobos Álvarez (:emilio) https://bugzilla.mozilla.org/user_profile?user_id=546716
Date: 2091-03-12 15:08 PDT
Modified for Pale Moon by: B Stack <bgstack15@gmail.com>
--- tools/profiler/tasktracer/GeckoTaskTracer.cpp.orig	2019-06-04 18:16:01.000000000 -0400
+++ tools/profiler/tasktracer/GeckoTaskTracer.cpp	2019-06-13 13:16:29.160643732 -0400
@@ -20,19 +20,19 @@
 
 #include <stdarg.h>
 
-// We need a definition of gettid(), but glibc doesn't provide a
+// We need a definition of gettid(), but old glibc versions don't provide a
 // wrapper for it.
 #if defined(__GLIBC__)
 #include <unistd.h>
 #include <sys/syscall.h>
-static inline pid_t gettid()
+#define gettid() static_cast<pid_t>(syscall(SYS_gettid))
 {
   return (pid_t) syscall(SYS_gettid);
 }
 #elif defined(XP_MACOSX)
 #include <unistd.h>
 #include <sys/syscall.h>
-static inline pid_t gettid()
+#define gettid() static_cast<pid_t>(syscall(SYS_thread_selfid))
 {
   return (pid_t) syscall(SYS_thread_selfid);
 }