On Sat, Mar 11, 2023 at 12:27 PM Sam James via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> This fixes errors like:
> ```
> In file included from /usr/include/pthread.h:30,
>                  from 
> /usr/lib/gcc/riscv64-gentoo-linux-musl/12/include/g++-v12/riscv64-gentoo-linux-musl/bits/gthr-default.h:35,
>                  from 
> /usr/lib/gcc/riscv64-gentoo-linux-musl/12/include/g++-v12/riscv64-gentoo-linux-musl/bits/gthr.h:148,
>                  from 
> /usr/lib/gcc/riscv64-gentoo-linux-musl/12/include/g++-v12/ext/atomicity.h:35,
>                  from 
> /usr/lib/gcc/riscv64-gentoo-linux-musl/12/include/g++-v12/bits/ios_base.h:39,
>                  from 
> /usr/lib/gcc/riscv64-gentoo-linux-musl/12/include/g++-v12/ios:42,
>                  from 
> /usr/lib/gcc/riscv64-gentoo-linux-musl/12/include/g++-v12/istream:38,
>                  from 
> /usr/lib/gcc/riscv64-gentoo-linux-musl/12/include/g++-v12/sstream:38,
>                  from 
> /var/tmp/portage/sys-devel/gcc-13.0.1_pre20230305/work/gcc-13-20230305/gcc/config/riscv/genrvv-type-indexer.cc:22:
> /usr/include/sched.h:84:7: error: attempt to use poisoned "calloc"
>    84 | void *calloc(size_t, size_t);
>       |       ^
> /usr/include/sched.h:124:36: error: attempt to use poisoned "calloc"
>   124 | #define CPU_ALLOC(n) ((cpu_set_t *)calloc(1,CPU_ALLOC_SIZE(n)))
>       |                                    ^
> make[3]: *** [Makefile:2855: build/genrvv-type-indexer.o] Error 1
> ```
>
> See also 3b21c21f3f5726823e19728fdd1571a14aae0fb3 and 
> 49d508065bdd36fb1a9b6aad9666b1edb5e06474,
> which was fixed in PR106102.
>
> gcc/ChangeLog:
>         * config/riscv/genrvv-type-indexer.cc: Avoid calloc() poisoning on 
> musl by
>         adding <pthread.h> include.


Is 100% not the correct fix and will break if you are doing a cross
compiler building on mingw to riscv.

You should add/handle INCLUDE_SSTREAM to system.h instead and then
define INCLUDE_SSTREAM in genrvv-type-indexer.cc.
In fact, INCLUDE_PTHREAD_H support should be removed since it is no
longer being used for the jit front-end (that was moved over to
std::mutex instead).

Thanks,
Andrew

>
> v2: fix changelog.
>
> Signed-off-by: Sam James <s...@gentoo.org>
> ---
>  gcc/ChangeLog                           | 5 +++++
>  gcc/config/riscv/genrvv-type-indexer.cc | 1 +
>  2 files changed, 6 insertions(+)
>
> diff --git a/gcc/ChangeLog b/gcc/ChangeLog
> index c9e557ce833..f8a1c37f76e 100644
> --- a/gcc/ChangeLog
> +++ b/gcc/ChangeLog
> @@ -1,3 +1,8 @@
> +2023-03-11  Sam James  <s...@gentoo.org>
> +
> +       * config/riscv/genrvv-type-indexer.cc: Avoid calloc() poisoning on 
> musl by
> +       adding <pthread.h> include.
> +
>  2023-03-10  Jakub Jelinek  <ja...@redhat.com>
>
>         PR target/107703
> diff --git a/gcc/config/riscv/genrvv-type-indexer.cc 
> b/gcc/config/riscv/genrvv-type-indexer.cc
> index 0ef1d766002..b286ec84132 100644
> --- a/gcc/config/riscv/genrvv-type-indexer.cc
> +++ b/gcc/config/riscv/genrvv-type-indexer.cc
> @@ -14,6 +14,7 @@ along with GCC; see the file COPYING3.  If not see
>  <http://www.gnu.org/licenses/>.  */
>
>  #include "bconfig.h"
> +#define INCLUDE_PTHREAD_H
>  #include "system.h"
>  #include "errors.h"
>
> --
> 2.39.2
>

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