https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96980
Bug ID: 96980
Summary: unimplemented of variably-modified type
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: tangyixuan at mail dot dlut.edu.cn
Target Milestone: ---
Hi, the following code is not compiled by g++ but is compiled by clang.
$ cat s.cpp
int main (){
int a=2, b=3;
int A[a][b];
auto B =[&](){
int c=1, d=2;
int C = A[c][d];
};
B();
}
$ clang++ -c s.cpp
success.
$ g++ -c s.cpp
s.cpp: In lambda function:
s.cpp:6:25: sorry, unimplemented: capture of variably-modified type ‘int
[a][b]’ that is not an N3639 array of runtime bound
6 | int C = A[c][d];
| ^
s.cpp:6:25: note: because the array element type ‘int [b]’ has variable size
$ g++ -v
Using built-in specs.
COLLECT_GCC=/usr/local/gcc-20200823/bin/g++
COLLECT_LTO_WRAPPER=/usr/local/gcc-20200823/libexec/gcc/x86_64-pc-linux-gnu/11.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-11-20200823/configure --prefix=/usr/local/gcc-20200823
--enable-checking=release --enable-languages=c,c++ --disable-multilib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.0.0 20200823 (experimental) (GCC)
