[PATCH] D79760: [WinEH64] Fix a crush issue when c++ exception nested in a particular form.

[Pengfei Wang via Phabricator via llvm-commits]

pengfei added a comment.

@andrew.w.kaylor I tested for below 3 cases, and get the runtime result for them in different compilers.

  void ex1() {
    try {
      throw 1;
    } catch (...) {
      try {
        throw 2;
      } catch (...) {
      }
    }
  }
  void ex2() {
    try {
      try {
        throw 1;
      } catch (...) {
        throw 2;
      }
    } catch (...) {
    }
  }
  void ex3() {
    try {
      throw 1;
    } catch (...) {
      try {
        try {
          throw 2;
        } catch (...) {
          throw 3;
        }
      } catch (...) {
      }
    }
  }

F11911208: p1.PNG <https://reviews.llvm.org/F11911208>
You can see that the layout of try map table of some nested exception is different under 32 and 64 bit MSVC. This patch makes LLVM has the same behavior with MSVC.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D79760/new/

https://reviews.llvm.org/D79760