[Bug preprocessor/65713] New: C Preprocessor generates invalid output

[Bug preprocessor/65713] New: C Preprocessor generates invalid output

[krejzi at email dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65713

            Bug ID: 65713
           Summary: C Preprocessor generates invalid output
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: preprocessor
          Assignee: unassigned at gcc dot gnu.org
          Reporter: krejzi at email dot com

Created attachment 35274
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35274&action=edit
gcc-4.9.2 output

Using GCC snapshot 5.0.0 20150405 (experimental) and trying to build
libgpg-error-1.18, which generates a header file using the output from gcc -E
on a header file. Output from gcc-4.9.2 and the mentioned snapshot is
different, which causes libgpg-error to fail to compile.

gcc-4.9.2 gives the output from first.txt
mentioned snapshot gives the output from second.txt

The header file used in both examples is the third attachment.

[Bug preprocessor/65713] C Preprocessor generates invalid output

[krejzi at email dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65713

--- Comment #1 from Armin K. <krejzi at email dot com> ---
Created attachment 35275
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35275&action=edit
gcc 5.0.0 snapshot output

[Bug preprocessor/65713] C Preprocessor generates invalid output

[krejzi at email dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65713

--- Comment #2 from Armin K. <krejzi at email dot com> ---
Created attachment 35276
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35276&action=edit
File used to produce the first two files

Two files are generated with gcc -E _mkerrcodes.h

[Bug preprocessor/65713] C Preprocessor generates invalid output

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65713

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mpolacek at gcc dot gnu.org

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Does it work if you use the -P option?  Looks like a known issue described in
https://gcc.gnu.org/gcc-5/porting_to.html

[Bug preprocessor/65713] C Preprocessor generates invalid output

[krejzi at email dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65713

--- Comment #4 from Armin K. <krejzi at email dot com> ---
Yes, that works. I'll take it to libgpg-error upstream. Thanks for the quick
response and please close this bug.

[Bug preprocessor/65713] C Preprocessor generates invalid output

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65713

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Closing.