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Template Instantiation Error in system/lib/libcxx/include/__memory/pointer_traits.h #21603
Description
I faced the following error when compiling proxy (https://github.com/microsoft/proxy) using Emscripten. It seems there is a bug in system/lib/libcxx/include/__memory/pointer_traits.h header.
version: latest and even 3.1.54
/home/sara/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__memory/pointer_traits.h:118:22: error: implicit instantiation of undefined template 'std::__pointer_traits_element_type<std::nullptr_t>'
118 | typedef typename __pointer_traits_element_type<pointer>::type element_type;
| ^
You can reproduce the error using the following commands:
$ git clone https://github.com/microsoft/proxy
$ cd proxy/build
$ emcmake cmake ..
$ emmake cmake --build .
Activity
sbc100 commentedon Mar 25, 2024
Our C++ headers come from clang's libc++. Do you happen to know if this issue also occurs with libc++? You can try this by building using
-stdlib=libc++.If this is an issue was was already fixes in libc++ then this could be fixed when #21530 is fixed
Update libcxx and libcxxabi to LLVM 18.1.2 (#21638)
Update libcxx and libcxxabi to LLVM 18.1.2 (emscripten-core#21638)