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Date: Fri, 18 Oct 2019 12:35:45 +0000
From: "wangjianjian (C)" <wangjianjian3@...wei.com>
To: "musl@...ts.openwall.com" <musl@...ts.openwall.com>
CC: "wangjianjian (C)" <wangjianjian3@...wei.com>
Subject: [PATCH 1/1] ungetc: Cast to unsigned char before push back to stream
>From 4d24e6fee85ed878dc632dd29aabeb7c7454952e Mon Sep 17 00:00:00 2001
From: Wang Jianjian <wangjianjian3@...wei.com>
Date: Fri, 18 Oct 2019 20:28:29 +0800
Subject: [PATCH 1/1] ungetc: Cast to unsigned char before push back to stream
Per Posix standard, casting to unsigned char is need before returning C
and pushing C back to stream.
Signed-off-by: Wang Jianjian <wangjianjian3@...wei.com>
---
src/stdio/ungetc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/stdio/ungetc.c b/src/stdio/ungetc.c
index 180673a4..9733091a 100644
--- a/src/stdio/ungetc.c
+++ b/src/stdio/ungetc.c
@@ -12,9 +12,9 @@ int ungetc(int c, FILE *f)
return EOF;
}
- *--f->rpos = c;
+ *--f->rpos = (unsigned char)c;
f->flags &= ~F_EOF;
FUNLOCK(f);
- return c;
+ return (unsigned char)c;
}
--
2.17.1
BR,
Wang Jianjian
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