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freopen: Added flush of the read buffers.

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This commit is contained in:
Fotis Panagiotopoulos
2022-10-18 13:19:10 +03:00
committed by Xiang Xiao
parent d200cacc49
commit ca9aeeec1f
1 changed files with 8 additions and 1 deletions
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libs/libc/stdio/lib_freopen.c
+8 -1
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@@ -100,9 +100,16 @@ FAR FILE *freopen(FAR const char *path, FAR const char *mode,
return NULL; return NULL;
} }
/* Flush the stream and duplicate the new fd to it */ /* Flush the stream and invalidate the read buffer. */
fflush(stream); fflush(stream);
#ifndef CONFIG_STDIO_DISABLE_BUFFERING
lib_rdflush(stream);
#endif
/* Duplicate the new fd to the stream. */
ret = dup2(fd, fileno(stream)); ret = dup2(fd, fileno(stream));
close(fd); close(fd);
if (ret < 0) if (ret < 0)