https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=915194

This problem has only on amd64, not on i386 even.

---------- Forwarded message ---------
From: Yunqiang Su <wzssyqa@gmail.com>
Date: 2018年12月2日周日 上午12:59
Subject: Debian's mips64el-linux-gnuabi64 will munmap_chunk(): invalid
pointer for o32 compiling
To: <gcc-help@gcc.gnu.org>


I meet a problem of Debian’s cross toolchain, and I guess it should be
an upstream bug.[1]
It happens for gcc-7/gcc-8 in Debian Sid/Buster, while not for gcc-6 in stretch.

1. Install Debian testing/sid env on amd64
2. apt-get install gcc-8-mips64el-linux-gnuabi64
gcc-8-mips64-linux-gnuabi64 gcc-8-mips-linux-gnu

These bellow cmd will show:
munmap_chunk(): invalid pointer
Aborted

$ echo "int a(){ return 1; }" | mips64el-linux-gnuabi64-gcc-8 -c -mabi=32 -xc - $ echo "int a(){ return 1; }" | mips64el-linux-gnuabi64-gcc-8
-B/non_exists/ -c -mabi=32 -xc -
$ echo "int a(){ return 1; }" | mips64el-linux-gnuabi64-gcc-8
-B/usr/share -c -mabi=32 -xc -
$ echo "int a(){ return 1; }" | mips64el-linux-gnuabi64-gcc-8 -EB -c
-mabi=32 -xc -


These bellow cmd works well
# for both n32 or 64 abi, it works well
$ echo "int a(){ return 1; }" | mips64el-linux-gnuabi64-gcc-8 -c -mabi=n32 -xc -
$ echo "int a(){ return 1; }" | mips64el-linux-gnuabi64-gcc-8 -c -mabi=64 -xc -

# -B a path which contains MIPS cross assembler
$ echo "int a(){ return 1; }" | mips64el-linux-gnuabi64-gcc-8 -B/usr/mips64el-linux-gnuabi64/bin/ -c -mabi=32 -xc -
$ echo "int a(){ return 1; }" | mips64el-linux-gnuabi64-gcc-8
-B/usr/bin/ -c -mabi=32 -xc -

# none mips64el-linux-gnuabi64 toolchains works well.
$ echo "int a(){ return 1; }" | mips64-linux-gnuabi64-gcc-8 -c -mabi=32 -xc -
$ echo "int a(){ return 1; }" | mips64-linux-gnuabi64-gcc-8 -EL -c
-mabi=32 -xc -
$ echo "int a(){ return 1; }" | mipsel-linux-gnu-gcc-8 -c -mabi=64 -xc -
$ echo "int a(){ return 1; }" | mipsel-linux-gnu-gcc-8 -c -mabi=n32 -xc -
$ echo "int a(){ return 1; }" | mipsel-linux-gnu-gcc-8 -c -mabi=32 -xc -

With some debug, this problem is triggered in gcc/gcc.c
static int
execute (void)
{
….
pex_free (pex);


[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=915194
[2] gcc -v for these toolchains.

xxx@xxx:~$ mipsel-linux-gnu-gcc-8 -v
Using built-in specs.
COLLECT_GCC=mipsel-linux-gnu-gcc-8 COLLECT_LTO_WRAPPER=/usr/lib/gcc-cross/mipsel-linux-gnu/8/lto-wrapper
Target: mipsel-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian
8.2.0-10' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-libitm --disable-libsanitizer --disable-libquadmath --disable-libquadmath-support --enable-plugin --enable-default-pie --with-system-zlib --disable-libphobos --enable-multiarch
--disable-werror --enable-multilib --with-arch-32=mips32r2
--with-fp-32=xx --with-madd4=no --with-lxc1-sxc1=no
--enable-targets=all --with-arch-64=mips64r2 --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=mipsel-linux-gnu --program-prefix=mipsel-linux-gnu- --includedir=/usr/mipsel-linux-gnu/include
Thread model: posix
gcc version 8.2.0 (Debian 8.2.0-10)

xxx@xxx:~$ mips64el-linux-gnuabi64-gcc-8 -v
Using built-in specs.
COLLECT_GCC=mips64el-linux-gnuabi64-gcc-8 COLLECT_LTO_WRAPPER=/usr/lib/gcc-cross/mips64el-linux-gnuabi64/8/lto-wrapper Target: mips64el-linux-gnuabi64
Configured with: ../src/configure -v --with-pkgversion='Debian
8.2.0-10' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-libitm --disable-libsanitizer --disable-libquadmath --disable-libquadmath-support --enable-plugin --enable-default-pie --with-system-zlib --disable-libphobos --enable-multiarch
--disable-werror --enable-multilib --with-mips-plt
--with-arch-64=mips64r2 --with-madd4=no --enable-targets=all --with-arch-32=mips32r2 --with-fp-32=xx --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=mips64el-linux-gnuabi64
--program-prefix=mips64el-linux-gnuabi64- --includedir=/usr/mips64el-linux-gnuabi64/include
Thread model: posix
gcc version 8.2.0 (Debian 8.2.0-10)

xxx@xxx:~$ mips64-linux-gnuabi64-gcc-8 -v
Using built-in specs.
COLLECT_GCC=mips64-linux-gnuabi64-gcc-8 COLLECT_LTO_WRAPPER=/usr/lib/gcc-cross/mips64-linux-gnuabi64/8/lto-wrapper Target: mips64-linux-gnuabi64
Configured with: ../src/configure -v --with-pkgversion='Debian
8.2.0-10' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-libitm --disable-libsanitizer --disable-libquadmath --disable-libquadmath-support --enable-plugin --enable-default-pie --with-system-zlib --disable-libphobos --enable-multiarch
--disable-werror --enable-multilib --with-mips-plt
--with-arch-64=mips64r2 --enable-targets=all --with-arch-32=mips32r2 --with-fp-32=xx --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=mips64-linux-gnuabi64 --program-prefix=mips64-linux-gnuabi64- --includedir=/usr/mips64-linux-gnuabi64/include
Thread model: posix
gcc version 8.2.0 (Debian 8.2.0-10)


--
YunQiang Su

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