I've been trying to compile an app bundle generated by Closure Compiler.

Compiling the bundle with the Hermes compiler:

hermesc -O -emit-binary -out ./test.hbc /test.js

emits the following error:

index.js:1:1: error: Too deeply nested try/catch

Hermes versions tested with:

LLVM (http://llvm.org/):
  LLVH version 8.0.0svn
  Optimized build

Hermes JavaScript compiler.
  Hermes release version: 0.7.2
  HBC bytecode version: 76

  Features:
    Debugger
    Zip file input
---------------------------------
LLVM (http://llvm.org/):
  LLVH version 8.0.0svn
  Optimized build

Hermes JavaScript compiler.
  Hermes release version: 0.8.0
  HBC bytecode version: 83

  Features:
    Debugger
    Zip file input

By inspecting the JS code I found that the reason is the presence of a try/catch in the global scope. The try/catch does not have any recursion and deep function traces inside its scope. Removing it solves the error.

Adding this try {} catch (a) {} at the end of file, also causes the error.

Seems like there is something else in the bundle that in combination with a global try/catch causes the error.

In a simple test project, the error is not reproducible. I want to create a repro thus I would like to know some hints for the direction to dig in.