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-rw-r--r--lib/vsprintf.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 82e5c13653..60874dae3e 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -750,6 +750,7 @@ repeat:
ADDCH(str, '\0');
if (str > end)
end[-1] = '\0';
+ --str;
}
#else
*str = '\0';