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AutoValue 1.10.4 includes commit 3f69cd2 (intending to fix #1572), by explicitly enumerating possible URL schemes returned by Class.getResource and reading the URL appropriately. The code supports file and jar URLs, but GraalVM native image's resource loading support would return a resource URL like resource:/com/google/auto/value/processor/autovalue.vm, which is not supported:
java.lang.AssertionError: Template search logic fails for: resource:/com/google/auto/value/processor/autovalue.vm
at com.google.auto.value.processor.TemplateVars.readerFromUrl(TemplateVars.java:148)
at autovalue.shaded.com.google.escapevelocity.Template.parseFrom(Template.java:146)
at autovalue.shaded.com.google.escapevelocity.Template.parseFrom(Template.java:140)
at com.google.auto.value.
57FE
processor.TemplateVars.parsedTemplateForResource(TemplateVars.java:125)
at com.google.auto.value.processor.AutoValueTemplateVars.<clinit>(AutoValueTemplateVars.java:44)
at com.google.auto.value.processor.AutoValueProcessor.processType(AutoValueProcessor.java:245)
at com.google.auto.value.processor.AutoValueishProcessor.process(AutoValueishProcessor.java:442)
AutoValue 1.10.3 works correctly in GraalVM.
Recommended fixes:
- Add a special case in
TemplateVars.readerFromUrlto callgetResourceAsStreamfor theresourceURL scheme, or - If an unknown URL scheme is encountered, default to calling
getResourceAsStream.
(Context: I am compiling Turbine as a GraalVM native image with built-in support for AutoValue.)
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