Boost C++ Libraries: Ticket #2263: On PA-RISC with GCC 4.3.1, thread primitives are misdetected

owner set

Marshall Clow — Tue, 09 Sep 2008 18:57:21 GMT

owner set to Peter Dimov

status changed

Peter Dimov — Tue, 09 Sep 2008 21:54:08 GMT

status new → assigned

Peter Dimov — Wed, 17 Sep 2008 20:55:04 GMT

In addition to __hppa, need to also check __arm.

Peter Dimov — Wed, 17 Sep 2008 22:27:22 GMT

Does GCC on PA-RISC indeed not provide even sync_lock_test_and_set? Or is it just sync_fetch_and_add that is not present?

river@… — Wed, 17 Sep 2008 22:41:54 GMT

it does not:

river@maiden:~>cat test.c
int i;
int main() {
        __sync_lock_test_and_set(&i, 1);
        return 0;
}
river@maiden:~>gcc test.c -o test -W -Wall
/usr/ccs/bin/ld: Unsatisfied symbols:
   __sync_lock_test_and_set_4 (first referenced in /var/tmp//ccgdGbo1.o) (code)
collect2: ld returned 1 exit status
 river@maiden:~>gcc -v
Using built-in specs.
Target: hppa1.1-hp-hpux11.11
Configured with: /tmp/gcc-4.3.1.tar.gz/gcc-4.3.1/configure --host=hppa1.1-hp-hpux11.11 --target=hppa1.1-hp-hpux11.11 --build=hppa1.1-hp-hpux11.11 --prefix=/opt/hp-gcc-4.3.1 --with-gnu-as --without-gnu-ld --with-ld=/usr/ccs/bin/ld --enable-threads=posix --enable-languages=c,c++ --with-gmp=/proj/opensrc/be/hppa1.1-hp-hpux11.11 --with-mpfr=/proj/opensrc/be/hppa1.1-hp-hpux11.11
Thread model: posix
gcc version 4.3.1 (GCC)

(PA-RISC does provide a single atomic operation - 'load and clear word' (ldcw), which is roughly equivalent to __sync_lock_test_and_set(&x, 1). Unfortunately, I'm not comfortable enough with the platform to provide an implementation.)

status changed; resolution set

Peter Dimov — Wed, 17 Sep 2008 22:53:54 GMT

status assigned → closed
resolution → fixed

(In [48838]) Fix #2263. See also [48835].