https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64576

            Bug ID: 64576
           Summary: Preprocessor Error With 5.0 not with 4.9.2
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: preprocessor
          Assignee: unassigned at gcc dot gnu.org
          Reporter: joel at gcc dot gnu.org

Created attachment 34431
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34431&action=edit
Cut down example showing error

The attached example is based on code that has compiled fine for about 15
years. 

$ ~/test-gcc/install-head/bin/powerpc-rtems4.11-gcc  -meabi -mcpu=603e
-msdata=sysv -O2 -c b1.c
b1.c:1:36: error: '#' is not followed by a macro parameter
 #define SETBAT_ASM(batu, batl, u, l)\
                                    ^

The macro may have issues but it gcc has been happy with it for a LONG time. :)

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