[Bug libcc1/104799] New: Header issue with x86_64-linux-musl based cross-compiler

[Bug libcc1/104799] New: Header issue with x86_64-linux-musl based cross-compiler

[fxcoudert at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104799

            Bug ID: 104799
           Summary: Header issue with x86_64-linux-musl based
                    cross-compiler
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libcc1
          Assignee: unassigned at gcc dot gnu.org
          Reporter: fxcoudert at gcc dot gnu.org
  Target Milestone: ---

Trying to build a cross-compiler for build == host == x86_64-linux-musl (Alpine
Linux 3.15) and target == aarch64-apple-darwin leads to the following build
error:

[12:57:48] libtool: compile:  x86_64-linux-musl-g++ -DHAVE_CONFIG_H -I.
-I/workspace/srcdir/gcc-darwin-arm64/libcc1 -I
/workspace/srcdir/gcc-darwin-arm64/libcc1/../include -I
/workspace/srcdir/gcc-darwin-arm64/libcc1/../libgcc -I ../gcc
-I/workspace/srcdir/gcc-darwin-arm64/libcc1/../gcc -I
/workspace/srcdir/gcc-darwin-arm64/libcc1/../gcc/c
-I/workspace/srcdir/gcc_build/./gmp -I/workspace/srcdir/gcc-darwin-arm64/gmp
-I/workspace/srcdir/gcc_build/./mpfr/src
-I/workspace/srcdir/gcc-darwin-arm64/mpfr/src
-I/workspace/srcdir/gcc-darwin-arm64/mpc/src -I
/workspace/srcdir/gcc-darwin-arm64/libcc1/../gcc/c-family -I
/workspace/srcdir/gcc-darwin-arm64/libcc1/../libcpp/include -W -Wall
-fvisibility=hidden -fcf-protection -g -O2 -MT libcc1plugin.lo -MD -MP -MF
.deps/libcc1plugin.Tpo -c
/workspace/srcdir/gcc-darwin-arm64/libcc1/libcc1plugin.cc  -fPIC -DPIC -o
.libs/libcc1plugin.o
[12:57:49] In file included from /usr/include/pthread.h:30,
[12:57:49]                  from
/usr/include/c++/10.3.1/x86_64-alpine-linux-musl/bits/gthr-default.h:35,
[12:57:49]                  from
/usr/include/c++/10.3.1/x86_64-alpine-linux-musl/bits/gthr.h:148,
[12:57:49]                  from /usr/include/c++/10.3.1/ext/atomicity.h:35,
[12:57:49]                  from /usr/include/c++/10.3.1/memory:75,
[12:57:49]                  from
/workspace/srcdir/gcc-darwin-arm64/libcc1/deleter.hh:23,
[12:57:49]                  from
/workspace/srcdir/gcc-darwin-arm64/libcc1/rpc.hh:25,
[12:57:49]                  from
/workspace/srcdir/gcc-darwin-arm64/libcc1/libcc1plugin.cc:67:
[12:57:49] /usr/include/sched.h:84:7: error: attempt to use poisoned "calloc"
[12:57:49]    84 | void *calloc(size_t, size_t);
[12:57:49]       |       ^
[12:57:49] /usr/include/sched.h:124:36: error: attempt to use poisoned "calloc"
[12:57:49]   124 | #define CPU_ALLOC(n) ((cpu_set_t
*)calloc(1,CPU_ALLOC_SIZE(n)))
[12:57:49]       |                                    ^


This was reported on the Iain Sandoe's GCC branch, but appears to be generic
(i.e., not specific to aarch64 at all). It seems like it's an issue with musl
headers, and there has been a similar issue reported in libgccjit before, at
gentoo: https://bugs.gentoo.org/828580 (for which Alpine is shipping a patch:
https://git.alpinelinux.org/aports/tree/main/gcc/0039-Fix-attempt-to-use-poisoned-calloc-error-in-libgccji.patch?id=dae75528cea4d8ea8e110dd4a2fbd454cc686d15)

[Bug libcc1/104799] Header issue with x86_64-linux-musl based cross-compiler

[fxcoudert at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104799

--- Comment #1 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
Should have added a link to the original report:
https://github.com/iains/gcc-darwin-arm64/issues/84

[Bug libcc1/104799] Header issue with x86_64-linux-musl based cross-compiler

[mose at gnu dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104799

--- Comment #2 from Mosè Giordano <mose at gnu dot org> ---
Created attachment 52568
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52568&action=edit
Patch for poisoned calloc on Musl systems

Following the example of
https://git.alpinelinux.org/aports/tree/main/gcc/0042-Fix-attempt-to-use-poisoned-calloc-error-in-libgccji.patch,
reported in https://bugs.gentoo.org/828580, I wrote the attached patch for
libcc1, which seems to solve the issue for me.

[Bug libcc1/104799] Header issue with x86_64-linux-musl based cross-compiler

[lancethepants at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104799

Lance Fredrickson <lancethepants at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lancethepants at gmail dot com

--- Comment #3 from Lance Fredrickson <lancethepants at gmail dot com> ---
Similar? to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105632

[Bug libcc1/104799] Header issue with x86_64-linux-musl based cross-compiler

[slyfox at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104799

Sergei Trofimovich <slyfox at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
   Target Milestone|---                         |12.2
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #4 from Sergei Trofimovich <slyfox at gcc dot gnu.org> ---
> libcc1/libcc1plugin.cc

(In reply to Mosè Giordano from comment #2)
> Created attachment 52568 [details]
> Patch for poisoned calloc on Musl systems
> 
> Following the example of
> https://git.alpinelinux.org/aports/tree/main/gcc/0042-Fix-attempt-to-use-
> poisoned-calloc-error-in-libgccji.patch, reported in
> https://bugs.gentoo.org/828580, I wrote the attached patch for libcc1, which
> seems to solve the issue for me.

I think the change looks reasonable. Should be fixed by "c++: avoid <memory>
poisoning on musl [PR106102]" patch from PR106102 in master and gcc-12
branches.

Can you give it a try?