CF-4202602 - REST method compile time error says wrong file

Issue: REST method compile time error says wrong file

Steps to Reproduce:
1) unzip CF-4202602.zip (attached to ticket)
2) In CF Admin, create "mymapping" mapping to unzipped app's directory
3) run index.cfm to register REST app
4) run mypage.cfm

Actual Result:

The error occurred in {path}/MyCFC.cfc: line 4

2 : component rest=true restpath="a" {
3 :   remote string function returnVoid(string c restargsource="path") httpmethod="GET" restpath="b/{c}" produces="application/json" {
4 :     o = new mymapping.myOtherCFC();
5 :     return serializeJSON(ARGUMENTS.c == 'c' ? 'c' : '');
6 :   }

Expected Result:

The error occurred in {path}/MyOtherCFC.cfc: line 2

1 : component {
2 :   function f() {compileTime=}
3 : }

Note: If `function f() {compileTime=}` is changed to `compileTime` in MyOtherCFC.cfc, then error shows correct file:

The error occurred in {path}/MyOtherCFC.cfc: line 2

1 : component {
2 :   compileTime
3 : }

Note: If `o = new mymapping.myOtherCFC()` is called from a .cfm (i.e. not during REST call), then error also shows correct file.

Summary: The issue seems to only occur when a CFC *method* throws a compile time error during a *REST call*.

Verified in build 2018.0.01.308605 (PreRelease).
Filed as CF-4202602.