R2RT aad360eb3d Fix crash with --trace-expand --warn-uninitialized together
Some code paths in `ExpandVariablesInString{New,Old}` were not checking
the `filename` parameter for a null pointer, but this can happen when
using the above flags together.  Add the checks and a test case.

Fixes: #17896
2018-04-09 11:59:07 -04:00
..
2018-01-31 18:23:03 +03:00
2017-12-18 18:26:55 +01:00
2018-01-31 18:23:03 +03:00
2018-01-31 18:23:03 +03:00
2018-03-28 07:26:56 -04:00
2018-01-31 18:23:03 +03:00
2018-01-04 06:52:01 +11:00
2018-01-31 18:23:03 +03:00
2018-01-04 06:52:01 +11:00
2018-01-04 06:52:01 +11:00
2018-01-31 18:23:03 +03:00
2018-01-04 06:52:01 +11:00
2018-01-31 18:23:03 +03:00
2018-01-31 18:23:03 +03:00
2018-01-04 06:52:01 +11:00