750a83b896
* Treat the assertion condition offset as a character offset in the file. * Allow unrecognized characters to be replaced by a placeholder character. This is unrelated to the fix but is just a precautionary measure. Fixed: 39271 Change-Id: I4871ea41d3a46d26ecac5047265a1dbc1c889350 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/124602 Reviewed-by: Vijay Menon <vsm@google.com> Commit-Queue: Nicholas Shahan <nshahan@google.com>