From: Rob Landley <rob@landley.net>
Date: Tue, 7 Jun 2005 02:43:52 +0000 (-0000)
Subject: Patch from Dmitry Zakharov:
X-Git-Tag: 1_1_0~963
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=ed830e8693941b8e54869ef4e68353ca2d71224e;p=oweals%2Fbusybox.git

Patch from Dmitry Zakharov:

Charlie Brady wrote:
> Here's another awk parsing problem - unary post increment - pre is fine:
>
>bash-2.05a$ echo 2,3 | gawk -F , '{ $2++ }'
>bash-2.05a$ echo 2,3 | /tmp/busybox/busybox awk -F , '{ $2++ }'
>awk: cmd. line:1: Unexpected token
>
Here's a fix for this. There is another problem with constructions like
"print (A+B) ++C", I don't
know whether somebody uses such constructions (fixing both these
problems would require very
serious change in awk code).
---

diff --git a/editors/awk.c b/editors/awk.c
index c1cb2a2e2..ed8b0f20f 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -1084,7 +1084,7 @@ static node *parse_expr(unsigned long iexp) {
 			cn->a.n = vn;
 			xtc = TC_OPERAND | TC_UOPPRE | TC_REGEXP;
 			if (tc & (TC_OPERAND | TC_REGEXP)) {
-				xtc = TC_UOPPRE | TC_BINOP | TC_OPERAND | iexp;
+				xtc = TC_UOPPRE | TC_UOPPOST | TC_BINOP | TC_OPERAND | iexp;
 				/* one should be very careful with switch on tclass -
 				 * only simple tclasses should be used! */
 				switch (tc) {
@@ -1101,7 +1101,6 @@ static node *parse_expr(unsigned long iexp) {
 						cn->info |= xS;
 						cn->r.n = parse_expr(TC_ARRTERM);
 					}
-					xtc = TC_UOPPOST | TC_UOPPRE | TC_BINOP | TC_OPERAND | iexp;
 					break;
 				
 				  case TC_NUMBER: