The subtype of a resource_definition declaration must be uint32:
{% include “docs/reference/fidl/language/error-catalog/label/_bad.md” %}
{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/bad/fi-0172.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
Change the subtype to an uint32 to fix this error:
{% include “docs/reference/fidl/language/error-catalog/label/_good.md” %}
{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/good/fi-0172.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
This is an error related to FIDL‘s internal implementation, and thus should only ever be surfaced to developers working on FIDL’s core libraries. End users should never see this error.
The resource_definition declaration it refers to is FIDL's internal means of defining resources like handles, and is likely to change in the future as part of the handle generalization effort.
