[Bug Report] Unsupported grammar of sizeof

[FanWuUCL]

Bug description:
The sizeof operation in C can be in two forms: "sizeof(var)" or "sizeof var". In the latter case, Milu cannot process such code correctly but print unmatched parenthesis.

How to recreate the bug:

1. Write the following code to a file, say "bug.c":

include<stdlib.h>

include<stdio.h>

void func()
{
void* msg;
printf("%lu\n", sizeof msg);
if(msg == 0);

}

void main(int argc, char** argv){
func();
}
2. Run Milu to generate mutants on "bug.c", with the default set of operators, but add option "--debug=src":
$ path\to\milu --debug=src bug.c
3. The output will be the original code being parsed and printed without any modification:

include<stdlib.h>

include<stdio.h>

void func ( )
{
void * msg ;
printf ( "%lu\n"
, sizeof msg )
) ;
if ( msg == 0 ) ;

}

;
void main ( int argc , char * * argv )
{
func ( ) ;
}

1. There is an additional parenthesis after "sizeof msg" in the printf statement.

Temporary Solution for users:
Enclose the argument of sizeof in parentheses.