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From: "shobbo at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/55210] New: cannot #define FOO 'a'
Date: Mon, 05 Nov 2012 02:22:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55210

             Bug #: 55210
           Summary: cannot #define FOO 'a'
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: shobbo@gmail.com


If I define a macro as in the summary I get the following output:

[*] gfortran  -cpp testfort.f -o testfort
<built-in>:0:0: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.7/README.Bugs> for instructions.

I tried it with -cpp, -xf95-cpp-input and -xf77-cpp-input.
using gfortran 4.7.2, 4.4.3 and 4.4.4.

!---- testfort.f
#define FOO 'a'

      program testfort
        implicit none
        print *, 'pretest'
#if FOO == 'a'
        print *, "the macro is a character a"
#endif
        print *, 'epitest'
      end program