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Don't allow pointer underrun in loop.

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Spotted by:	John W. DeBoskey <jwd@unx.sas.com>
This commit is contained in:
Jordan K. Hubbard 1999-01-08 18:37:34 +00:00
parent 5526d2d920
commit f93b86166a
1 changed files with 4 additions and 2 deletions
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6
usr.bin/make/parse.c
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@ -41,7 +41,7 @@
static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94";
#endif
static const char rcsid[] =
"$Id: parse.c,v 1.18 1997/07/24 06:58:08 charnier Exp $";
"$Id: parse.c,v 1.19 1998/05/25 03:28:37 steve Exp $";
#endif /* not lint */
/*-
@ -1412,8 +1412,10 @@ Parse_DoVar (line, ctxt)
default:
#ifdef SUNSHCMD
while (*opc != ':')
if (--opc < line)
if (opc == line)
break;
else
--opc;
if (strncmp(opc, ":sh", 3) == 0) {
type = VAR_SHELL;