Date: Tue, 13 Apr 1999 17:14:44 -0600 From: "Drew Eckhardt" <drew@plutotech.com> To: freebsd-bugs@freebsd.org, egcs-bugs@cygnus.com Message-ID: <199904132314.RAA93619@pluto.plutotech.com>
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Under i86 FreeBSD 3.1-stable, using these versions of g++
gcc version egcs-2.91.60 19981201 (egcs-1.1.1 release)
gcc version 2.7.2.1
the BSD htonl macro which uses __extension__({}) can't be used in C++
constructor initializer lists.
The test program
#include <sys/param.h>
struct foo {
foo (long x) : bar(htonl(x)) { }
long bar;
};
Expands to something like
typedef unsigned long u_long;
struct foo {
foo (long x) : bar(__extension__ ({ register u_long __X = ( x ); __asm ("xchgb %h1, %b1\n\trorl $16, %1\n\txchgb %h1, %b1" : "=q" (__X) : "0" (__X)); __X; }) ) { }
long bar;
};
and produces these errors
htonl.cc:4: parse error before `)'
htonl.cc:4: missing ';' before right brace
htonl.cc:5: semicolon missing after declaration of `foo'
htonl.cc: In method `foo::foo(long int)':
htonl.cc:4: parse error at end of saved text
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