[Bug 41119] New: vbscript fails to parse 'createobject("wscript.shell") .run' statement

wine-bugs at winehq.org wine-bugs at winehq.org
Thu Aug 11 06:15:13 CDT 2016


https://bugs.winehq.org/show_bug.cgi?id=41119

            Bug ID: 41119
           Summary: vbscript fails to parse
                    'createobject("wscript.shell").run' statement
           Product: Wine
           Version: 1.9.16
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: vbscript
          Assignee: wine-bugs at winehq.org
          Reporter: aihujianfei at qq.com
      Distribution: ---

The vbscript file for test is :
   createobject("wscript.shell").run "calc.exe"

I see the vbs bison parse file in 
https://github.com/alexhenrie/wine/blob/master/dlls/vbscript/parser.y , 

the parse failed at the pos [.run] in this file.

I think the fail reason is there has one confilct .

for more information , I run command [bison -v -d -pparser_ parser.y], then it
generate file parser.output . 

In the file parser.output , part of the file show this confilct which mentioned
above .

"
state 160

77 ArgumentList: Expression .
78 | Expression . ',' ArgumentList
85 Expression: Expression . tIMP EqvExpression
138 PrimaryExpression: '(' Expression . ')'

tIMP  shift, and go to state 123
','   shift, and go to state 162
')'   shift, and go to state 156

')'  [reduce using rule 77 (ArgumentList)]

"

As we can see above , there has one shift/reduce conflict . to parse this file
success , we need a reduce to ArgumentList , instead of shift to
PrimaryExpression .

I will appreciate your fix.

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