On Wed, 05 Feb 2014, Prathamesh Kulkarni wrote:
> Hi, is there a way to find if a function has empty body ?
>
There might be some way with gcc - but you might also want to consider
tools that are maybe more suitable for the task like coccinelle
Here is a simple example of detecting empty functions with coccinelle
the source file:
----------------
void foo(void){
}
int bar(int x){
}
int baz(int x){
return x+1;
}
int main(int argc, char ** argv){
int ret=-1;
foo();
ret=bar(0);
ret=baz(ret);
return ret;
}
the cocci script for detection and reporting:
---------------------------------------------
@empty@
identifier func;
position p1;
@@
func@p1(...){
}
@script:python@
p1 << empty.p1;
fn << empty.func;
@@
print "%s:%s empty function at lines %s" % (p1[0].file,fn,p1[0].line)
running it:
-----------
and the result of executing spatch on this hello.c
hofrat@debian:/tmp$ spatch -sp_file empty.cocci hello.c
init_defs_builtins: /usr/local/share/coccinelle/standard.h
HANDLING: hello.c
hello.c:bar empty function at lines 4
hello.c:foo empty function at lines 1
Not saying that gcc cant do it somehow - but it just might not be the
right tool to use - there are open-source tools around for checking
source-code properties that seem more suitable for your problem.
HTH
thx!
hofrat
