Hi,
I don't know whether this bug has been reported(I have check GCC Bugzillia
though) or has been resolved:
This program:
#include <stdio.h>
int main()
{
char a = 'a';
printf("Size of char : %d\n",sizeof(a));
printf("Size of char : %d\n",sizeof('a'));
return 0;
}
when compiled with:
gcc -Wall testgcc.c -o testgcc -fexec-charset=utf-16
will triggers GCC's bug report reminder:
...
internal compiler error: character 0xa is not unibyte in execution character
set
...
Please submit a full bug report...
I think the problem comes with the "-fexec-character=utf-16" flag. And my GCC
version is (compiling with "gcc -v -Wall testgcc.c -o testgcc
-fexec-charset=utf-16")
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
5.4.0-6ubuntu1~16.04.4' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-5 --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-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4)
COLLECT_GCC_OPTIONS='-fno-common' '-v' '-Wall' '-o' 'testgcc'
'-fexec-charset=utf-16' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/5/cc1 -quiet -v -imultiarch x86_64-linux-gnu
testgcc.c -quiet -dumpbase testgcc.c -mtune=generic -march=x86-64 -auxbase
testgcc -Wall -version -fno-common -fexec-charset=utf-16
-fstack-protector-strong -Wformat-security -o /tmp/ccVA6bpI.s
GNU C11 (Ubuntu 5.4.0-6ubuntu1~16.04.4) version 5.4.0 20160609
(x86_64-linux-gnu)
compiled by GNU C version 5.4.0 20160609, GMP version 6.1.0, MPFR
version 3.1.4, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/5/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-linux-gnu/5/include
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/5/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
GNU C11 (Ubuntu 5.4.0-6ubuntu1~16.04.4) version 5.4.0 20160609
(x86_64-linux-gnu)
compiled by GNU C version 5.4.0 20160609, GMP version 6.1.0, MPFR
version 3.1.4, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 78b6f8b2ed219a71c67c16db887e4800
testgcc.c: In function ‘main’:
testgcc.c:4:12: warning: multi-character character constant [-Wmultichar]
char a = 'a';
^
testgcc.c:4:12: warning: overflow in implicit constant conversion
[-Woverflow]
testgcc.c:5:10: warning: embedded ‘\0’ in format [-Wformat-contains-nul]
printf("Size of char : %d\n",sizeof(a));
^
testgcc.c:5:10: warning: too many arguments for format [-Wformat-extra-args]
testgcc.c:6:39: warning: multi-character character constant [-Wmultichar]
printf("Size of char : %d\n",sizeof('a'));
^
testgcc.c:6:10: warning: embedded ‘\0’ in format [-Wformat-contains-nul]
printf("Size of char : %d\n",sizeof('a'));
^
testgcc.c:6:10: warning: too many arguments for format [-Wformat-extra-args]
testgcc.c:8:0: internal compiler error: character 0xa is not unibyte in
execution character set
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.
Is it appropriate for me to create a bug report on GCC's bugzillia?
--
Yubin
