"Stephen J. Turnbull" <stephen(a)xemacs.org> wrote:
In compiler.h we have
#ifndef UNUSED
# if defined(__GNUC__) && !defined(__cplusplus) &&
!defined(__INTEL_COMPILER)
# define ATTRIBUTE_UNUSED __attribute__ ((unused))
# else
# define ATTRIBUTE_UNUSED
# endif
Why isn't this done for C++? At least for g++ 4.1.2 it works fine
(and it suppresses a bunch of warnings).
Jerry?
Because once upon a time I had a version of g++ that complained that I
couldn't use that attribute due to the optional argument feature of C++.
I can't seem to locate a g++ that does that now, and I don't remember
how long ago it was (and hence, which version of g++ did that). We
could try removing the "&& !defined(__cplusplus)" part and see if
anybody complains.
For that matter, the __INTEL_COMPILER part was based on 2 major versions
ago of the Intel compiler. The version I currently have installed,
9.1.047, also takes __attribute__ ((unused)) without complaint. I never
checked version 8. If __INTEL_COMPILER is defined, then the check
should be __INTEL_COMPILER >= 800 or >= 900, depending. Does anybody
have a version 8 installed?
--
Jerry James, Assistant Professor james(a)xemacs.org
Computer Science Department
http://www.cs.usu.edu/~jerry/
Utah State University
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