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properly handle classes with no interface table in isAssignableFrom()

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This commit is contained in:
Joel Dice 2007-08-21 22:03:03 -06:00
parent 57d57ff7bf
commit a1caf06955
1 changed files with 5 additions and 3 deletions
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2
src/machine.cpp
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@ -1694,12 +1694,14 @@ isAssignableFrom(Thread* t, object a, object b)
if (classFlags(t, a) & ACC_INTERFACE) { if (classFlags(t, a) & ACC_INTERFACE) {
for (; b; b = classSuper(t, b)) { for (; b; b = classSuper(t, b)) {
object itable = classInterfaceTable(t, b); object itable = classInterfaceTable(t, b);
if (itable) {
for (unsigned i = 0; i < arrayLength(t, itable); i += 2) { for (unsigned i = 0; i < arrayLength(t, itable); i += 2) {
if (arrayBody(t, itable, i) == a) { if (arrayBody(t, itable, i) == a) {
return true; return true;
} }
} }
} }
}
} else if (classArrayDimensions(t, a)) { } else if (classArrayDimensions(t, a)) {
if (classArrayDimensions(t, b)) { if (classArrayDimensions(t, b)) {
return isAssignableFrom return isAssignableFrom