1. Open my attached project
2. Open bug.unity scene.
Notice Unhnandled exception error message popping in console.
3. Try to double click on error message
Notice that nothing happens.

Expected behavior: double clicking on error message points to broken script
Actual behavior: Double clicking on error message does not do anything.

This Unhandled exception has been raised because const integer constmesh was initialized with non const array member, which values has been accessed by also using non const variables. (line 31 of sadscript.cs)

Basically:
int a = 1, b = 3;
const int constmesh = mesh.triangles[a + b];// is broken
const int constmesn = mesh.triangles[1 + 3];// is working fine.

Repro on: 5.4.0b24, 5.4.0b13, 5.3.5p7, 5.2.0f3