Closer to getting GCOV back on panics: Now try global __gcov_flush()

bin/varnishd/cache/cache_panic.c

@@ -64,7 +64,7 @@
  */
 
 #ifdef GCOVING
-    int __llvm_gcov_flush(void);
+    int __gcov_flush(void);
 #endif
 
 static struct vsb pan_vsb_storage, *pan_vsb;
@@ -816,7 +816,7 @@ pan_ic(const char *func, const char *file, int line, const char *cond,
 	VSB_putc(pan_vsb, '\0');	/* NUL termination */
 
 #ifdef GCOVING
-	__llvm_gcov_flush();
+	__gcov_flush();
 #endif
 	abort();
 }

bin/varnishd/mgt/mgt_cli.c

@@ -64,7 +64,7 @@ static const struct cli_cmd_desc *cmds[] = {
 };
 
 #ifdef GCOVING
-    int __llvm_gcov_flush(void);
+    int __gcov_flush(void);
 #endif
 
 static const int ncmds = sizeof cmds / sizeof cmds[0];
@@ -113,7 +113,7 @@ mcf_panic(struct cli *cli, const char * const *av, void *priv)
 	(void)av;
 	(void)priv;
 #ifdef GCOVING
-	__llvm_gcov_flush();
+	__gcov_flush();
 #endif
 	AZ(strcmp("", "You asked for it"));
 	/* NOTREACHED */