From 6530025bcaf3a65083667a93ae50035bd7137bae Mon Sep 17 00:00:00 2001 From: "Roberto E. Vargas Caballero" Date: Fri, 15 Aug 2014 14:48:16 +0200 Subject: [PATCH] Fix portability problem in techo() ISCONTROL chechks if a value is between 0 and 0x1f or between 0x80 and 0x9f. Char signess depends of architecture and compiler, so in some environment the second case is always false (and wrong), Techo() calls ISCONTROL with a char variable, whose type cannot be changed because tpuc() expects a pointer to char, so the solution is to insert a cast in the call to ISCONTROL. --- st.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/st.c b/st.c index 814f3f5..d8ff30b 100644 --- a/st.c +++ b/st.c @@ -2311,13 +2311,13 @@ techo(char *buf, int len) { for(; len > 0; buf++, len--) { char c = *buf; - if(ISCONTROL(c)) { /* control code */ + if(ISCONTROL((uchar) c)) { /* control code */ if(c & 0x80) { c &= 0x7f; tputc("^", 1); tputc("[", 1); } else if(c != '\n' && c != '\r' && c != '\t') { - c ^= '\x40'; + c ^= 0x40; tputc("^", 1); } tputc(&c, 1);