Date: Thu, 1 Oct 2009 21:40:08 +0000 (UTC) From: Jilles Tjoelker <jilles@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r197691 - in head: bin/sh tools/regression/bin/sh/errors Message-ID: <200910012140.n91Le8Kx071672@svn.freebsd.org>
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Author: jilles Date: Thu Oct 1 21:40:08 2009 New Revision: 197691 URL: http://svn.freebsd.org/changeset/base/197691 Log: sh: Disallow mismatched quotes in backticks (`...`). Due to the amount of code removed by this, it seems that allowing unmatched quotes was a deliberate imitation of System V sh and real ksh. Most other shells do not allow unmatched quotes (e.g. bash, zsh, pdksh, NetBSD /bin/sh, dash). PR: bin/137657 Added: head/tools/regression/bin/sh/errors/backquote-error2.0 (contents, props changed) Modified: head/bin/sh/parser.c Modified: head/bin/sh/parser.c ============================================================================== --- head/bin/sh/parser.c Thu Oct 1 21:14:40 2009 (r197690) +++ head/bin/sh/parser.c Thu Oct 1 21:40:08 2009 (r197691) @@ -82,7 +82,6 @@ struct heredoc { STATIC struct heredoc *heredoclist; /* list of here documents to read */ -STATIC int parsebackquote; /* nonzero if we are inside backquotes */ STATIC int doprompt; /* if set, prompt the user */ STATIC int needprompt; /* true if interactive and at start of line */ STATIC int lasttoken; /* last token read */ @@ -1043,7 +1042,7 @@ readtoken1(int firstc, char const *synta endword: if (syntax == ARISYNTAX) synerror("Missing '))'"); - if (syntax != BASESYNTAX && ! parsebackquote && eofmark == NULL) + if (syntax != BASESYNTAX && eofmark == NULL) synerror("Unterminated quoted string"); if (varnest != 0) { startlinno = plinno; @@ -1303,7 +1302,6 @@ parsesub: { parsebackq: { struct nodelist **nlpp; - int savepbq; union node *n; char *volatile str; struct jmploc jmploc; @@ -1311,11 +1309,9 @@ parsebackq: { int savelen; int saveprompt; - savepbq = parsebackquote; if (setjmp(jmploc.loc)) { if (str) ckfree(str); - parsebackquote = 0; handler = savehandler; longjmp(handler->loc, 1); } @@ -1397,7 +1393,6 @@ done: nlpp = &(*nlpp)->next; *nlpp = (struct nodelist *)stalloc(sizeof (struct nodelist)); (*nlpp)->next = NULL; - parsebackquote = oldstyle; if (oldstyle) { saveprompt = doprompt; @@ -1433,7 +1428,6 @@ done: str = NULL; INTON; } - parsebackquote = savepbq; handler = savehandler; if (arinest || dblquote) USTPUTC(CTLBACKQ | CTLQUOTE, out); Added: head/tools/regression/bin/sh/errors/backquote-error2.0 ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/tools/regression/bin/sh/errors/backquote-error2.0 Thu Oct 1 21:40:08 2009 (r197691) @@ -0,0 +1,7 @@ +# $FreeBSD$ + +sh -c 'echo `echo .BA"DCODE.` +echo ".BAD"CODE.' 2>&1 | grep -q BADCODE && exit 1 +echo '`"`' | sh -n 2>/dev/null && exit 1 +echo '`'"'"'`' | sh -n 2>/dev/null && exit 1 +exit 0
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