https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98944
Steven Sun <StevenSun2021 at hotmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |StevenSun2021 at hotmail dot
com
--- Comment #1 from Steven Sun <StevenSun2021 at hotmail dot com> ---
I met the same problem.
-------------------------------------------------------------------------
Three days ago, I pull from the repository and then compile the gnu c++
compiler in the devel/c++-modules branch.
system: ubuntu-20.04 x86_64
configured with: --disable-multilib
I took the same exaple as you, which is in the final working draft n4861
[modules.unit].
I think the compile order should be tu3 tu2 tu1 tu4, because the compiler tells
me I cannot import before build. So I compile it as
g++ -fmodules-ts -std=c++20 -c 3.cc -o 3.o
g++ -fmodules-ts -std=c++20 -c 2.cc -o 2.o
g++ -fmodules-ts -std=c++20 -c 1.cc -o 1.o
g++ -fmodules-ts -std=c++20 -c 4.cc -o 4.o
The compiling for 4.cc got an error
------------------------------------------------------
In module imported at 4.cc:1:1:
A: error: failed to read compiled module: Bad file data
A: note: compiled module file is ‘gcm.cache/A.gcm’
A: fatal error: returning to the gate for a mechanical issue
compilation terminated.
------------------------------------------------------
Then I took a peek into the gcm.cache/A.gcm, using readelf. Found that there's
already a section header named bar.
So I removed the line `import :Internals;` in 4.cc and it compiles.
Anyway, I don't know if that is a bug. Maybe the standard is different from the
final working draft. I am not sure.
