[cfe-dev] Combining floatLiteral() Node Matcher with isExpansionInFileMatching() Narrowing Matcher provides unexpected results

[FarSight Studios via cfe-dev]

> M_E is a macro and that macro is expanded in your
>
> double varX = M_E;
>
> line. The expansion is not in math.h. The expansion is in the main file.
>
> http://ec2-18-191-7-3.us-east-2.compute.amazonaws.com:10240/z/qRMj-W

Thank you so much for the explanation


> By the way, we have a llvm channel on the cpplang slack
> (https://cpplang.slack.com). That is a more suitable venue for your
> questions. This is the development mailing list.

I am sorry that I posted the questions in the wrong place. I didn't know
that clang has a slack channel.



On Thu, Jan 10, 2019 at 1:01 AM Stephen Kelly via cfe-dev <
cfe-dev at lists.llvm.org> wrote:

> On 09/01/2019 14:15, FarSight Studios via cfe-dev wrote:
> > Hi,
> >
> > Combining floatLiteral() Node Matcher with isExpansionInFileMatching()
> > Narrowing Matcher provides unexpected results.
> > The following matcher:
> > floatLiteral(isExpansionInFileMatching("include/math.h"))
> > does not matches "M_E" which is defined in "math.h"
> >
> > #include <math.h>
> >
> > int consts(int n){
> >      double varX = M_E;
> >      return varX;
> > }
> >
> > It matches a single unrelated node:
> > FloatingLiteral 0x562c409bdaa8 </usr/include/math.h:1184:47> 'float'
> > 0.000000e+00
> >
> > Am I doing something wrong?
>
>
> M_E is a macro and that macro is expanded in your
>
>   double varX = M_E;
>
> line. The expansion is not in math.h. The expansion is in the main file.
>
>   http://ec2-18-191-7-3.us-east-2.compute.amazonaws.com:10240/z/qRMj-W
>
> By the way, we have a llvm channel on the cpplang slack
> (https://cpplang.slack.com). That is a more suitable venue for your
> questions. This is the development mailing list.
>
> Thanks,
>
> Stephen.
>
> _______________________________________________
> cfe-dev mailing list
> cfe-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/cfe-dev/attachments/20190110/681fa917/attachment.html>