[Bug regression/81497] error compiling arm_acle.h

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81497

ktkachov at gcc dot gnu.org changed:

   What|Removed |Added

 Target||arm
 Status|UNCONFIRMED |NEW
   Last reconfirmed||2017-07-21
 CC||avieira at gcc dot gnu.org,
   ||ktkachov at gcc dot gnu.org
 Ever confirmed|0   |1

--- Comment #2 from ktkachov at gcc dot gnu.org ---
Confirmed. This happens only in g++.
The intrinsics that have void return type should not "return" their builtin,
they should just call it.

[Bug regression/81497] error compiling arm_acle.h

[ivan.nazarenko at uol dot com.br]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81497

Ivan Nazarenko  changed:

   What|Removed |Added

 CC||ivan.nazarenko at uol dot 
com.br
  Component|target  |regression
  Known to work||6.4.0
  Known to fail||7.1.0

--- Comment #1 from Ivan Nazarenko  ---
The following code:

###
#include 

int main() {return 0; }
###

does not cross-compile to ARM architecture on 7.1.0 and emits the following
errors:

$ ./arm-linux-g++ ~/teste.cpp   
In file included from /home/ivan/teste.cpp:1:0:
/home/ivan/buildroot-git2/buildroot/output/host/lib/gcc/arm-buildroot-linux-musleabihf/7.1.0/include/arm_acle.h:
In function ‘void __arm_ldc(unsigned int, unsigned int, const void*)’:
/home/ivan/buildroot-git2/buildroot/output/host/lib/gcc/arm-buildroot-linux-musleabihf/7.1.0/include/arm_acle.h:48:49:
error: invalid conversion from ‘const void*’ to ‘const int*’ [-fpermissive]
   return __builtin_arm_ldc (__coproc, __CRd, __p);
 ^
: note:   initializing argument 3 of ‘void __builtin_arm_ldc(unsigned
int, unsigned int, const int*)’
/home/ivan/buildroot-git2/buildroot/output/host/lib/gcc/arm-buildroot-linux-musleabihf/7.1.0/include/arm_acle.h:
In function ‘void __arm_ldcl(unsigned int, unsigned int, const void*)’:
/home/ivan/buildroot-git2/buildroot/output/host/lib/gcc/arm-buildroot-linux-musleabihf/7.1.0/include/arm_acle.h:55:50:
error: invalid conversion from ‘const void*’ to ‘const int*’ [-fpermissive]
   return __builtin_arm_ldcl (__coproc, __CRd, __p);


... and so on, similar errors, 8 in total.

Verifying the latest arm_acle.h from git suggest that this problem is still
present.

as asked from the "reporting bug" procedure:

$ ./arm-linux-g++ -v
Using built-in specs.
COLLECT_GCC=/home/ivan/buildroot-git2/buildroot/output/host/bin/arm-linux-g++.br_real
COLLECT_LTO_WRAPPER=/home/ivan/buildroot-git2/buildroot/output/host/libexec/gcc/arm-buildroot-linux-musleabihf/7.1.0/lto-wrapper
Target: arm-buildroot-linux-musleabihf
Configured with: ./configure
--prefix=/home/ivan/buildroot-git2/buildroot/output/host
--sysconfdir=/home/ivan/buildroot-git2/buildroot/output/host/etc
--enable-static --target=arm-buildroot-linux-musleabihf
--with-sysroot=/home/ivan/buildroot-git2/buildroot/output/host/arm-buildroot-linux-musleabihf/sysroot
--disable-__cxa_atexit --with-gnu-ld --disable-libssp --disable-multilib
--with-gmp=/home/ivan/buildroot-git2/buildroot/output/host
--with-mpc=/home/ivan/buildroot-git2/buildroot/output/host
--with-mpfr=/home/ivan/buildroot-git2/buildroot/output/host
--with-pkgversion='Buildroot 2017.08-git-01191-g9c542ba'
--with-bugurl=http://bugs.buildroot.net/ --disable-libmpx --disable-libquadmath
--disable-libsanitizer --enable-tls --enable-plugins --enable-lto
--disable-libmudflap --enable-threads --without-isl --without-cloog
--disable-decimal-float --with-abi=aapcs-linux --with-cpu=cortex-a53
--with-fpu=neon-vfpv4 --with-float=hard --with-mode=arm
--enable-languages=c,c++,fortran
--with-build-time-tools=/home/ivan/buildroot-git2/buildroot/output/host/arm-buildroot-linux-musleabihf/bin
--enable-shared --enable-libgomp
Thread model: posix
gcc version 7.1.0 (Buildroot 2017.08-git-01191-g9c542ba)