The CFE can invoke transformations despite having compile-time errors.
The async transform was crashing the compiler if it hits for-in
iterables that have an invalid type or never type.
In case of an invalid type, the program has a compile-time error and
won't be able to run propertly. So we'll replace the entire for-in with
an invalid expression statement if the iterable is an invalid
expression.
In case of a never type, the program should compile fine, which this CL
also fixes.
This makes the newly added tests no longer result in DartkCrash but
rather in a compile-time error (invalid expression) or runtime-error
(never type).
Closes https://github.com/dart-lang/sdk/issues/45014
Change-Id: Ic50f68400b67b57dd4a2c0a125b08f0f3e0d8dd6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/188463
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Johnni Winther
dd1c3a3233