diff --git a/stdlib/Makefile b/stdlib/Makefile
index f7b25c1981..3d49c4941a 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -171,6 +171,7 @@ tests := \
test-a64l \
test-at_quick_exit-race \
test-atexit-race \
+ test-atexit-recursive \
test-bz22786 \
test-canon \
test-canon2 \
diff --git a/stdlib/exit.c b/stdlib/exit.c
index bc46109f3e..dc12e212bc 100644
--- a/stdlib/exit.c
+++ b/stdlib/exit.c
@@ -53,7 +53,10 @@ __run_exit_handlers (int status, struct exit_function_list **listp,
exit (). */
while (true)
{
- struct exit_function_list *cur = *listp;
+ struct exit_function_list *cur;
+
+ restart:
+ cur = *listp;
if (cur == NULL)
{
@@ -118,7 +121,7 @@ __run_exit_handlers (int status, struct exit_function_list **listp,
if (__glibc_unlikely (new_exitfn_called != __new_exitfn_called))
/* The last exit function, or another thread, has registered
more exit functions. Start the loop over. */
- continue;
+ goto restart;
}
*listp = cur->next;
diff --git a/stdlib/test-atexit-recursive.c b/stdlib/test-atexit-recursive.c
new file mode 100644
index 0000000000..0596b9763b
--- /dev/null
+++ b/stdlib/test-atexit-recursive.c
@@ -0,0 +1,75 @@
+/* Support file for atexit/exit, etc. race tests (BZ #27749).
+ Copyright (C) 2023 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+/* Check that atexit handler registed from another handler still called. */
+
+#include
+#include
+#include
+#include
+#include
+#include
+
+static void
+atexit_cb (void)
+{
+}
+
+static void
+atexit_last (void)
+{
+ _exit (1);
+}
+
+static void
+atexit_recursive (void)
+{
+ atexit (&atexit_cb);
+ atexit (&atexit_last);
+}
+
+_Noreturn static void
+test_and_exit (int count)
+{
+ for (int i = 0; i < count; ++i)
+ atexit (&atexit_cb);
+ atexit (&atexit_recursive);
+ exit (0);
+}
+
+static int
+do_test (void)
+{
+ for (int i = 0; i < 100; ++i)
+ if (xfork () == 0)
+ test_and_exit (i);
+
+ for (int i = 0; i < 100; ++i)
+ {
+ int status;
+ xwaitpid (0, &status, 0);
+ if (!WIFEXITED (status))
+ FAIL_EXIT1 ("Failed iterations %d", i);
+ TEST_COMPARE (WEXITSTATUS (status), 1);
+ }
+
+ return 0;
+}
+
+#define TEST_FUNCTION do_test
+#include