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Update the documentation about C/C++ toolchain limitations. #117

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sunfishcode merged 1 commit into from
Apr 28, 2019
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Update the documentation about C/C++ toolchain limitations. #117

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11 changes: 8 additions & 3 deletions docs/WASI-intro.md
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Expand Up @@ -51,9 +51,14 @@ To make things easier, we provide
[prebuilt packages](https://github.com/CraneStation/wasi-sdk/releases)
that provide builds of Clang and sysroot libraries.

Note that C++ support has a notable
[bug](https://bugs.llvm.org/show_bug.cgi?id=40412) in clang which affects
<iostream> in libcxx. This will be fixed in future versions.
WASI doesn't yet support `setjmp`/`longjmp` or C++ exceptions, as it is
waiting for [unwinding support in WebAssembly].

[unwinding support in WebAssembly]: https://github.com/WebAssembly/exception-handling/

Some C++ programs, particularly those using `<iostream>`, may see warnings
about function signature mismatches; this is a
[known bug](https://bugs.llvm.org/show_bug.cgi?id=40412).

## How can I run programs that use WASI?

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