Arrange for text mode on stdin, stdout and stderr.

* newlib/libc/stdio/findfp.c (__sinit): Add the Cygwin-specific __SCLE
(stream convert line endings) flag when calling the std function to
initializing the reent structure's _stdin, _stdout and _stderr members.

1 files changed, 20 insertions, 0 deletions

diff --git a/newlib/libc/stdio/findfp.c b/newlib/libc/stdio/findfp.c
index 896be99e9..abe53fa07 100644
--- a/newlib/libc/stdio/findfp.c
+++ b/newlib/libc/stdio/findfp.c
@@ -294,6 +294,26 @@ __sinit (struct _reent *s)
   stderr_init (s->_stderr);
 #endif /* _REENT_GLOBAL_STDIO_STREAMS */
 
+  /* Cygnal: __SCLE is added to all descriptors to make
+     enable line-ending conversion.  */
+  std (s->_stdin,  __SRD | __SCLE, 0);
+
+  /* On platforms that have true file system I/O, we can verify
+     whether stdout is an interactive terminal or not, as part of
+     __smakebuf on first use of the stream.  For all other platforms,
+     we will default to line buffered mode here.  Technically, POSIX
+     requires both stdin and stdout to be line-buffered, but tradition
+     leaves stdin alone on systems without fcntl.  */
+#ifdef HAVE_FCNTL
+  std (s->_stdout, __SWR | __SCLE, 1);
+#else
+  std (s->_stdout, __SWR | __SLBF | __SCLE, 1);
+#endif
+
+  /* POSIX requires stderr to be opened for reading and writing, even
+     when the underlying fd 2 is write-only.  */
+  std (s->_stderr, __SRW | __SNBF | __SCLE, 2);
+
   s->__sdidinit = 1;
 
   __sinit_lock_release ();