Merge branch 'maint'

* maint:
  [erts] Document how to generate gcov html results
  [erts] Make sure gcov-emulator produce results

HOWTO/DEVELOPMENT.md

@@ -347,6 +347,7 @@ switches are:
   * Set environment variable `ASAN_OPTIONS` for any extra asan options you want to pass.
 * -gcov
   * Start a gcov run-time system.
+  * Generate results by running: `$ERL_TOP/erts/etc/unix/gcov-gen-html $ERL_TOP <OUTPUT_DIR>`
 * -gdb
   * Start an Emacs gdb debugging session. Can be combined with -debug.
 * -core /path/to/core/file

erts/emulator/beam/erl_init.c

@@ -2667,6 +2667,10 @@ __decl_noreturn void __noreturn erts_exit_epilogue(int flush)
 
     sys_tty_reset(n);
 
+#ifdef ERTS_GCOV
+    flush = !0; /* otherwise we get no results... */
+#endif
+
     if (n == ERTS_INTR_EXIT)
 	(void) (flush ? exit(0) : _exit(0));
     else if (n == ERTS_DUMP_EXIT)