From b61ab0b33b4f9ea5fb3663fe8fa0d5fd70e6c166 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Wed, 8 Sep 2010 20:23:25 +0800 Subject: [BUILTIN] Fix trailing field bug in read(1) The new read(1) code fails to handle the last variable correctly if it happens to be terminated by IFS characters. Those characters are included in the last variable but they should not be. This patch fixes this. Signed-off-by: Herbert Xu --- src/miscbltin.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) (limited to 'src') diff --git a/src/miscbltin.c b/src/miscbltin.c index c42a01c..653c92f 100644 --- a/src/miscbltin.c +++ b/src/miscbltin.c @@ -91,9 +91,20 @@ readcmd_handle_line(char *line, char **ap, size_t len) *arglist.lastp = NULL; ifsfree(); - for (sl = arglist.list; sl; sl = sl->next) { + sl = arglist.list; + + do { + if (!sl) { + /* nullify remaining arguments */ + do { + setvar(*ap, nullstr, 0); + } while (*++ap); + + return; + } + /* remaining fields present, but no variables left. */ - if (!ap[1]) { + if (!ap[1] && sl->next) { size_t offset; char *remainder; @@ -110,12 +121,7 @@ readcmd_handle_line(char *line, char **ap, size_t len) /* set variable to field */ rmescapes(sl->text); setvar(*ap, sl->text, 0); - ap++; - } - - /* nullify remaining arguments */ - do { - setvar(*ap, nullstr, 0); + sl = sl->next; } while (*++ap); } -- cgit 1.4.1