Merge branch 'rickard/gcov-fix' into maint

* rickard/gcov-fix: [erts] Document how to generate gcov html results [erts] Make sure gcov-emulator produce results
bjorng · Feb 27, 2025 · 92a0159 · 92a0159
2 parents 2bc5510 + 5113e2e
commit 92a0159
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diff --git a/HOWTO/DEVELOPMENT.md b/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

diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
@@ -2676,6 +2676,10 @@ __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)