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From 3eda39fac98550990abb9f83d986619d173f9605 Mon Sep 17 00:00:00 2001
From: Mark Adler <madler@alumni.caltech.edu>
Date: Fri, 31 Jan 2020 22:05:56 -0800
Subject: [PATCH] Fix bug in undefer_input() that misplaced the input state.
Fix bug in undefer_input() that misplaced the input state.
---
fileio.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fileio.c b/fileio.c
index c10ff63..6290824 100644
--- a/fileio.c
+++ b/fileio.c
@@ -532,8 +532,10 @@ void undefer_input(__G)
* This condition was checked when G.incnt_leftover was set > 0 in
* defer_leftover_input(), and it is NOT allowed to touch G.csize
* before calling undefer_input() when (G.incnt_leftover > 0)
- * (single exception: see read_byte()'s "G.csize <= 0" handling) !!
+ * (single exception: see readbyte()'s "G.csize <= 0" handling) !!
*/
+ if (G.csize < 0L)
+ G.csize = 0L;
G.incnt = G.incnt_leftover + (int)G.csize;
G.inptr = G.inptr_leftover - (int)G.csize;
G.incnt_leftover = 0;
--
2.25.0
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