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Re: C99 inline and restrict keyword tests

From: Ralf Wildenhues
Subject: Re: C99 inline and restrict keyword tests
Date: Tue, 1 Dec 2009 19:25:40 +0100
User-agent: Mutt/1.5.20 (2009-08-09)

Hello Yann,

* Yann Droneaud wrote on Tue, Dec 01, 2009 at 03:09:11PM CET:
> If AC_PROG_CC_C99 successfully found a C99 compliant C compiler,
> AC_C_INLINE and AC_C_RESTRICT should use this result.
> Testing for "inline" and "restrict" keywords is redundant,
> eg, checking ac_cv_prog_cc_c99 = yes should be enough.

Well, in theory you are right.  In practice, the restrict macro tries to
get a spelling that is likely to be accepted by the C++ compiler as
well, and the inline case checks for a specific compiler bug:

# HP C version B.11.11.04 doesn't allow a typedef as the return value for an
# inline function, only builtin types.

I can only check B.11.11.20, and it does not seem to have that bug (any


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