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[Bug c/57665] New: cpp: stringification does not work for __GNUC__

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57665

            Bug ID: 57665
           Summary: cpp: stringification does not work for __GNUC__
           Product: gcc
           Version: 4.3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: Ulrich.Windl at rz dot uni-regensburg.de

It seems stringification for "__GNUC__" and other related numbers does not
work:
Using "#__GNUC__" produces "# 4" as output, not the expected ``"4"''.
I tried something like
#define GCC_VERSION #__GNUC__ "." #___GNUC_MINOR__ "." #__GNUC_PATCHLEVEL
but all I get is "stray `#' in program"
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