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From: "Torbjörn SVENSSON" <>
To: <>
Cc: "Torbjörn SVENSSON" <>
Subject: [PATCH] Restore _lock initialization in single threaded mode
Date: Mon, 29 Aug 2022 17:10:49 +0200	[thread overview]
Message-ID: <> (raw)

When __SINGLE_THREAD__ is defined, stdin, stdout and stderr needs to
have their _lock instance initialized. The __sfp() method is not
invoked for the 3 mentioned fds thus, the std() method needs to handle
the initialization of the lock.

This is more or less a revert of 382550072b49430f8c69adee937a0ba07bd385e6

Signed-off-by: Torbjörn SVENSSON <>
 newlib/libc/stdio/findfp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/newlib/libc/stdio/findfp.c b/newlib/libc/stdio/findfp.c
index c43028209..f7249f6d7 100644
--- a/newlib/libc/stdio/findfp.c
+++ b/newlib/libc/stdio/findfp.c
@@ -88,6 +88,10 @@ std (FILE *ptr,
   ptr->_close = NULL;
+#ifndef __SINGLE_THREAD__
+  if (ptr == &__sf[0] || ptr == &__sf[1] || ptr == &__sf[2])
+    __lock_init_recursive (&ptr->_lock);
 #ifdef __SCLE
   if (__stextmode (ptr->_file))
     ptr->_flags |= __SCLE;

             reply	other threads:[~2022-08-29 15:11 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-29 15:10 Torbjörn SVENSSON [this message]
2022-08-29 19:33 ` Jeff Johnston
2022-08-29 19:33   ` Jeff Johnston
2022-08-29 19:35   ` Torbjorn SVENSSON
2022-08-29 18:18 Torbjörn SVENSSON
2022-08-29 18:18 ` Torbjörn SVENSSON

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