Ctags: C : Can't parse function after macro line
Hello,
I found a bug in parsing C using ctags (it's in exuberant-ctags also).
The problem is the following:
#include <stdio.h>
#define PRAGMA(x) _Pragma(#x)
PRAGMA(bar)
int foo() {
int a = 1;
printf("a = %d\n", a);
}
void main(void) {
foo();
}
Output of ctags file did not have a function foo() as below.
PRAGMA f.c /^#define PRAGMA(/;" d file:
PRAGMA f.c /^PRAGMA(bar)$/;" f
main f.c /^void main(void) {$/;" f
Thanks!!
blackb1rd
All 8 comments
Thank you for reporting.
Important but fixing this is not easy.
masatake
on 25 Dec 2014
Private note: We have to record the macro definition in directiveDefine of get.c
cork layer I'm working in a branch can be used. Input stream must be hacked.
I have to check geany's memory based input stream.
masatake
on 25 Dec 2014
@masatake
Have you made progress on this?
Is your branch available somewhere?
blueyed
on 1 Feb 2015
No. I do nothing about this topic.
masatake
on 2 Feb 2015
Perhaps you could use ctags -I 'PRAGMA+' to skip the macro expansion part.
ntrel
on 2 Feb 2015
Private note: We have to record the macro definition in directiveDefine of get.c cork layer
This will not be enough to solve all macro usage, because many can come from included headers, and expand to weird things, so without a full-blown C preprocessor it won't ever be perfect. So I wonder if it makes sense to add all the complexity required to track macro expansion if it won't ever be enough.
b4n
on 2 Feb 2015
@b4n, I agree.
masatake
on 3 Feb 2015
I don't know the trick but the new parse solves this.
I got:
PRAGMA /tmp/enum.c /^#define PRAGMA(/;" d file:
foo /tmp/enum.c /^int foo() {$/;" f
main /tmp/enum.c /^void main(void) {$/;" f
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Most helpful comment
I don't know the trick but the new parse solves this.
I got: