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* [newlib-cygwin/main] __sfvwrite_r: call __sputc_r rather than putc in __SCLE case
@ 2023-11-17 16:09 Corinna Vinschen
0 siblings, 0 replies; only message in thread
From: Corinna Vinschen @ 2023-11-17 16:09 UTC (permalink / raw)
To: newlib-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=6ccbfe6a3d8a2aedb2c6f80bcc03bf946acc1b6c
commit 6ccbfe6a3d8a2aedb2c6f80bcc03bf946acc1b6c
Author: Corinna Vinschen <corinna@vinschen.de>
AuthorDate: Fri Nov 17 17:00:54 2023 +0100
Commit: Corinna Vinschen <corinna@vinschen.de>
CommitDate: Fri Nov 17 17:09:42 2023 +0100
__sfvwrite_r: call __sputc_r rather than putc in __SCLE case
__sfvwrite_r is called under lock. There's no reason to call
putc, locking the file recursively. Add a comment that locking
is required when calling __sfvwrite_r.
Fixes: 49d64538cd20 ("* libc/include/stdio.h (FILE): define __SCLE for "convert line endings" for Cygwin.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Diff:
---
newlib/libc/stdio/fvwrite.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/newlib/libc/stdio/fvwrite.c b/newlib/libc/stdio/fvwrite.c
index 34361cb8d135..fc79951032ad 100644
--- a/newlib/libc/stdio/fvwrite.c
+++ b/newlib/libc/stdio/fvwrite.c
@@ -40,6 +40,9 @@
/*
* Write some memory regions. Return zero on success, EOF on error.
*
+ * On systems supporting threads, this function *must* be called under
+ * _newlib_flockfile_start locking.
+ *
* This routine is large and unsightly, but most of the ugliness due
* to the three different kinds of output buffering is handled here.
*/
@@ -74,7 +77,7 @@ __sfvwrite_r (struct _reent *ptr,
GETIOV (;);
while (len > 0)
{
- if (putc (*p, fp) == EOF)
+ if (__sputc_r (ptr, *p, fp) == EOF)
return EOF;
p++;
len--;
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