OpenJDK: Fix long array creation in JVM_NewMultiArray - #21
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When JamVM is built for OpenJDK, Array.newInstance(Class, int[]) is mapped to the internal function JVM_NewMultiArray. JVM_NewMultiArray constructs an array class descriptor from a local primitive-type table. The table incorrectly maps long to 'L' instead of 'J'. As a result, the generated array class name (e.g. "[[L") is invalid, and the VM may crash while resolving it. Fix by replacing the table in JVM_NewMultiArray with a call to the existing primClass2TypeChar() helper, which has the correct mapping. Signed-off-by: Guillermo Rodríguez <grodriguez@ingelabs.com>
phvega
approved these changes
Aug 20, 2026
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When JamVM is built for OpenJDK, Array.newInstance(Class, int[]) is mapped to the internal function JVM_NewMultiArray.
JVM_NewMultiArray constructs an array class descriptor from a local primitive-type table. The table incorrectly maps long to 'L' instead of 'J'. As a result, the generated array class name (e.g. "[[L") is invalid, and the VM may crash while resolving it.
Fix by replacing the table in JVM_NewMultiArray with a call to the existing primClass2TypeChar() helper, which has the correct mapping.