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allow copies between object arrays of different types in System.arraycopy

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This commit is contained in:
Joel Dice 2009-06-04 17:19:48 -06:00
parent 98be5c509e
commit db09adc0d4
1 changed files with 13 additions and 1 deletions
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14
src/builtin.cpp
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@ -61,6 +61,16 @@ enumerateThreads(Thread* t, Thread* x, object array, unsigned* index,
}
}
bool
compatibleArrayTypes(Thread* t, object a, object b)
{
return classArrayElementSize(t, a)
and classArrayElementSize(t, b)
and (a == b
or (not ((classVmFlags(t, a) & PrimitiveFlag)
or (classVmFlags(t, b) & PrimitiveFlag))));
}
} // namespace
extern "C" JNIEXPORT int64_t JNICALL
@ -528,7 +538,9 @@ Avian_java_lang_System_arraycopy
int32_t length = arguments[4];
if (LIKELY(src and dst)) {
if (LIKELY(objectClass(t, src) == objectClass(t, dst))) {
if (LIKELY(compatibleArrayTypes
(t, objectClass(t, src), objectClass(t, dst))))
{
unsigned elementSize = classArrayElementSize(t, objectClass(t, src));
if (LIKELY(elementSize)) {