[all-commits] [llvm/llvm-project] d94bac: [WebAssembly] Handle exception specifications

[Heejin Ahn via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: d94bacbcf87a06abc0c1fc3405406399460debc3
      https://github.com/llvm/llvm-project/commit/d94bacbcf87a06abc0c1fc3405406399460debc3
  Author: Heejin Ahn <aheejin at gmail.com>
  Date:   2020-05-19 (Tue, 19 May 2020)

  Changed paths:
    M clang/docs/DiagnosticsReference.rst
    M clang/include/clang/Basic/DiagnosticGroups.td
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/lib/CodeGen/CGException.cpp
    M clang/test/CodeGenCXX/wasm-eh.cpp

  Log Message:
  -----------
  [WebAssembly] Handle exception specifications

Summary:
Wasm currently does not fully handle exception specifications. Rather
than crashing,
- This treats `throw()` in the same way as `noexcept`.
- This ignores and prints a warning for `throw(type, ..)`, for a
  temporary measure. This warning is controlled by
  `-Wwasm-exception-spec`, which is on by default. You can suppress the
  warning by using `-Wno-wasm-exception-spec`.

Reviewers: dschuff

Subscribers: sbc100, jgravelle-google, sunfish, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D80061