Garbage collection intrinsics and debugging intrinsics don't mix #9642
Description
| Bugzilla Link | 9270 |
| Version | trunk |
| OS | All |
| Reporter | LLVM Bugzilla Contributor |
Extended Description
It appears that the presence of llvm.gcroot intrinsics cause the code generator to emit improper DWARF debugging information. I have two sample files, one which was generated with garbage collection enabled (Hello.ll) and another with garbage collection disabled (Hello2.ll). I've also included the original source file (Hello.tart).
To demonstrate the problem, compile both samples and enter the debugger, setting a breakpoint on 'main'.
In the first sample, with GC, the debugger stops on line 3 "let s2 = s" which is incorrect, because line 2 has not executed yet.
In the second sample, without GC, the debugger stops on the line 2 "var s = getString()", which is correct.