On Tue, Mar 14, 2023 at 1:24 AM 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.

The system.h change is OK

> gcc/ChangeLog:
>         * config/riscv/genrvv-type-indexer.cc: Avoid calloc() poisoning on 
> musl by
>         including <sstream> earlier.
>         * system.h: Add INCLUDE_SSTREAM.
>
> Signed-off-by: Sam James <s...@gentoo.org>
> ---
>  gcc/config/riscv/genrvv-type-indexer.cc | 2 +-
>  gcc/system.h                            | 4 ++++
>  2 files changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/gcc/config/riscv/genrvv-type-indexer.cc 
> b/gcc/config/riscv/genrvv-type-indexer.cc
> index 0ef1d766002..e677b55290c 100644
> --- a/gcc/config/riscv/genrvv-type-indexer.cc
> +++ b/gcc/config/riscv/genrvv-type-indexer.cc
> @@ -14,12 +14,12 @@ along with GCC; see the file COPYING3.  If not see
>  <http://www.gnu.org/licenses/>.  */
>
>  #include "bconfig.h"
> +#define INCLUDE_SSTREAM
>  #include "system.h"
>  #include "errors.h"
>
>  #include "coretypes.h"
>
> -#include <sstream>
>  #include <assert.h>
>  #include <math.h>
>
> diff --git a/gcc/system.h b/gcc/system.h
> index 64cd5a49258..cf45db3f97e 100644
> --- a/gcc/system.h
> +++ b/gcc/system.h
> @@ -751,6 +751,10 @@ extern int vsnprintf (char *, size_t, const char *, 
> va_list);
>  # include <mutex>
>  #endif
>
> +#ifdef INCLUDE_SSTREAM
> +# include <sstream>
> +#endif
> +
>  #ifdef INCLUDE_MALLOC_H
>  #if defined(HAVE_MALLINFO) || defined(HAVE_MALLINFO2)
>  #include <malloc.h>
> --
> 2.40.0
>

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