[Bug libgcc/100904] New: [9/10/11 Regression] Wrong line location #include error "No such file or directory" – line + 1 [traditional mode as used by gfortran]

[Bug libgcc/100904] New: [9/10/11 Regression] Wrong line location #include error "No such file or directory" – line + 1 [traditional mode as used by gfortran]

[burnus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100904

            Bug ID: 100904
           Summary: [9/10/11 Regression] Wrong line location #include
                    error "No such file or directory" – line + 1
                    [traditional mode as used by gfortran]
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P3
         Component: libgcc
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org
  Target Milestone: ---

Working: GCC 6
Failing since: GCC 7

 * * *

echo '#include "nonExisting.h"' > file.c
echo '#include "nonExisting.h"' > file.F90

will give the wrong error location with:

  gfortran file.F90
or
  gcc -traditional-cpp file.c

Namely:
  file.c:2:2: fatal error: nonExisting.h: No such file or directory

Expected:
  Some line location in line 1.

  For instance, GCC 6 shows:

file.c:1:0: fatal error: nonExisting.h: No such file or directory
 #include "nonexisting.h"

 * * *

NOTE: gfortran only supports the traditional mode (as Fortran syntax and C
syntax does not mix well without additional cpp tweaking).

In C/C++, it works in non-traditional mode.

[Bug preprocessor/100904] [9/10/11/12 Regression] Wrong line location #include error "No such file or directory" – line + 1 [traditional mode as used by gfortran]

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100904

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|libgcc                      |preprocessor
            Summary|[9/10/11 Regression] Wrong  |[9/10/11/12 Regression]
                   |line location #include      |Wrong line location
                   |error "No such file or      |#include error "No such
                   |directory" – line + 1       |file or directory" – line +
                   |[traditional mode as used   |1 [traditional mode as used
                   |by gfortran]                |by gfortran]
   Target Milestone|---                         |9.5

[Bug preprocessor/100904] [9/10/11/12 Regression] Wrong line location #include error "No such file or directory" – line + 1 [traditional mode as used by gfortran]

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100904

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-06-08
                 CC|                            |jakub at gcc dot gnu.org
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r7-1651-gac81cf0b2bf5efdd716d10d1c218eb5a17e1035b

[Bug preprocessor/100904] [9/10/11/12 Regression] Wrong line location #include error "No such file or directory" – line + 1 [traditional mode as used by gfortran]

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100904

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

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

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
David, can you please have a look?  Thanks.

[Bug preprocessor/100904] [9/10/11/12 Regression] Wrong line location #include error "No such file or directory" – line + 1 [traditional mode as used by gfortran]

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100904

--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
FWIW the following hackish workaround seems to fix it, though am still
investigating why this is happening.

diff --git a/libcpp/directives.c b/libcpp/directives.c
index f4aa17d1156..b5bdd443a5a 100644
--- a/libcpp/directives.c
+++ b/libcpp/directives.c
@@ -850,6 +850,9 @@ do_include_common (cpp_reader *pfile, enum include_type
type)
                           pfile->directive->name, fname, angle_brackets,
                           buf);

+      if (CPP_OPTION (pfile, traditional))
+       location = pfile->directive_line;
+
       _cpp_stack_include (pfile, fname, angle_brackets, type, location);
     }

[Bug preprocessor/100904] [9/10/11/12 Regression] Wrong line location #include error "No such file or directory" – line + 1 [traditional mode as used by gfortran]

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100904

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2021-06-08 00:00:00         |2022-1-20
           Priority|P3                          |P2

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Re-confirmed.

[Bug preprocessor/100904] [10/11/12/13 Regression] Wrong line location #include error "No such file or directory" – line + 1 [traditional mode as used by gfortran]

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100904

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|9.5                         |10.4

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9 branch is being closed

[Bug preprocessor/100904] [10/11/12/13 Regression] Wrong line location #include error "No such file or directory" – line + 1 [traditional mode as used by gfortran]

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100904

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|10.4                        |10.5

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 10.4 is being released, retargeting bugs to GCC 10.5.

[Bug preprocessor/100904] [11/12/13/14 Regression] Wrong line location #include error "No such file or directory" – line + 1 [traditional mode as used by gfortran]

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100904

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|10.5                        |11.5

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10 branch is being closed.