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).

1 files changed, 1 insertions, 2 deletions

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: