From: Rian Hunter Date: Thu, 29 Jan 2015 23:06:43 +0000 (-0800) Subject: Fix crash due to wide characters X-Git-Url: https://git.owens.tech/assets/lich_lifts_title_slice.png%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%A0%22Lich%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%A0Lifts%22/assets/lich_lifts_title_slice.png%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%A0%22Lich%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%82%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%83%C3%83%C2%82%C3%82%C2%83%C3%83%C2%83%C3%82%C2%82%C3%83%C2%82%C3%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Fix crash due to wide characters In tputc(), when a character wasn't large enough to fit on the current line, we would call tnewline() to place it on the next line. Unfortunately, we weren't resetting our glyph pointer and this caused memory corruption when a wide character (width == 2) was being written. This patch resets our glyph pointer after calls to tnewline(). --- diff --git a/st.c b/st.c index db9a332..6a68c3c 100644 --- a/st.c +++ b/st.c @@ -2673,13 +2673,16 @@ tputc(char *c, int len) { if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) { gp->mode |= ATTR_WRAP; tnewline(1); + gp = &term.line[term.c.y][term.c.x]; } if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col) memmove(gp+1, gp, (term.col - term.c.x - 1) * sizeof(Glyph)); - if(term.c.x+width > term.col) + if(term.c.x+width > term.col) { tnewline(1); + gp = &term.line[term.c.y][term.c.x]; + } tsetchar(c, &term.c.attr, term.c.x, term.c.y);