https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80225
Bug ID: 80225
Summary: ICE when using =cc output operand incorrectly
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: inline-asm
Assignee: unassigned at gcc dot gnu.org
Reporter: jwjagersma at gmail dot com
Target Milestone: ---
Invalid code, but the error message is less than helpful. The following
triggers an ICE:
int main()
{
bool z;
int ar;
asm("lar %0, %1;" : "=@ccz"(z), "=r"(ar) : "rm"(0x1234));
if (!z) return -1;
return ar;
}
$ g++ -masm=intel asm_flags.cpp
asm_flags.cpp: In function 'int main()':
asm_flags.cpp:8:1: internal compiler error: in print_reg, at
config/i386/i386.c:16601
}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://sourceforge.net/projects/msys2> for instructions.
Version info:
$ g++ -v
Using built-in specs.
COLLECT_GCC=D:\msys64\mingw64\bin\g++.exe
COLLECT_LTO_WRAPPER=D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../gcc-6.3.0/configure --prefix=/mingw64
--with-local-prefix=/mingw64/local --build=x86_64-w64-mingw32
--host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32
--with-native-system-header-dir=/mingw64/x86_64-w64-mingw32/include
--libexecdir=/mingw64/lib --enable-bootstrap --with-arch=x86-64
--with-tune=generic --enable-languages=c,lto,c++,objc,obj-c++,fortran,ada
--enable-shared --enable-static --enable-libatomic --enable-threads=posix
--enable-graphite --enable-fully-dynamic-string --enable-libstdcxx-time=yes
--disable-libstdcxx-pch --disable-libstdcxx-debug --disable-isl-version-check
--enable-lto --enable-libgomp --disable-multilib --enable-checking=release
--disable-rpath --disable-win32-registry --disable-nls --disable-werror
--disable-symvers --with-libiconv --with-system-zlib --with-gmp=/mingw64
--with-mpfr=/mingw64 --with-mpc=/mingw64 --with-isl=/mingw64
--with-pkgversion='Rev2, Built by MSYS2 project'
--with-bugurl=https://sourceforge.net/projects/msys2 --with-gnu-as
--with-gnu-ld
Thread model: posix
gcc version 6.3.0 (Rev2, Built by MSYS2 project)
