https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102878
Bug ID: 102878
Summary: Internal compiler error with coroutine calling
constexpr function
Product: gcc
Version: 10.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: lcw at fb dot com
Target Milestone: ---
Created attachment 51643
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51643&action=edit
Preprocessed sources
Here is the full command I'm running, with its complete output:
$ g++-10 -v -save-temps -O2 repro.cc -std=c++20 -fcoroutines
Using built-in specs.
COLLECT_GCC=g++-10
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/10/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa:hsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
10.3.0-1ubuntu1~20.04' --with-bugurl=file:///usr/share/doc/gcc-10/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,m2 --prefix=/usr
--with-gcc-major-version-only --program-suffix=-10
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib
--enable-libphobos-checking=release --with-target-system-zlib=auto
--enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib
--with-tune=generic
--enable-offload-targets=nvptx-none=/build/gcc-10-S4I5Pr/gcc-10-10.3.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-10-S4I5Pr/gcc-10-10.3.0/debian/tmp-gcn/usr,hsa
--without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
--with-build-config=bootstrap-lto-lean --enable-link-mutex
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 10.3.0 (Ubuntu 10.3.0-1ubuntu1~20.04)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O2' '-std=c++2a' '-fcoroutines'
'-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/10/cc1plus -E -quiet -v -imultiarch
x86_64-linux-gnu -D_GNU_SOURCE repro.cc -mtune=generic -march=x86-64 -std=c++2a
-fcoroutines -O2 -fpch-preprocess -fasynchronous-unwind-tables
-fstack-protector-strong -Wformat -Wformat-security -fstack-clash-protection
-fcf-protection -o repro.ii
ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/10"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/10/include-fixed"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/public/apps/NCCL/2.8.3-1/include
/usr/include/c++/10
/usr/include/x86_64-linux-gnu/c++/10
/usr/include/c++/10/backward
/usr/lib/gcc/x86_64-linux-gnu/10/include
/usr/local/include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O2' '-std=c++2a' '-fcoroutines'
'-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/10/cc1plus -fpreprocessed repro.ii -quiet
-dumpbase repro.cc -mtune=generic -march=x86-64 -auxbase repro -O2 -std=c++2a
-version -fcoroutines -fasynchronous-unwind-tables -fstack-protector-strong
-Wformat -Wformat-security -fstack-clash-protection -fcf-protection -o repro.s
GNU C++17 (Ubuntu 10.3.0-1ubuntu1~20.04) version 10.3.0 (x86_64-linux-gnu)
compiled by GNU C version 10.3.0, GMP version 6.2.0, MPFR version
4.0.2, MPC version 1.1.0, isl version isl-0.22.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++17 (Ubuntu 10.3.0-1ubuntu1~20.04) version 10.3.0 (x86_64-linux-gnu)
compiled by GNU C version 10.3.0, GMP version 6.2.0, MPFR version
4.0.2, MPC version 1.1.0, isl version isl-0.22.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 169ee3a1708a329c07eaf03cc8dfbe6c
repro.cc: In function ‘void
MyClass::doSth()::<lambda()>::_ZZN7MyClass5doSthEvENKUlvE_clEv.actor(MyClass::doSth()::<lambda()>::_ZZN7MyClass5doSthEvENKUlvE_clEv.frame*)’:
repro.cc:42:3: internal compiler error: in is_this_parameter, at
cp/semantics.c:10206
42 | }();
| ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-10/README.Bugs> for instructions.
The original C++ repro:
#include <coroutine>
class Task : public std::suspend_never {
private:
class Promise {
public:
Task get_return_object() {
return Task();
}
std::suspend_never initial_suspend() {
return {};
}
std::suspend_never final_suspend() noexcept {
return {};
}
void return_void() {}
void unhandled_exception() {}
};
public:
using promise_type = Promise;
};
inline constexpr int getBarFromFoo(int foo) {
return 0;
}
class MyClass {
int myFoo;
Task doSth();
};
Task MyClass::doSth() {
co_await [&, this]() -> Task {
co_await std::suspend_never();
int bar = getBarFromFoo(myFoo);
}();
}
