JDK-8155781 : C2: opaque unsafe access triggers an assert
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 9
- Priority: P1
- Status: Closed
- Resolution: Fixed
- Submitted: 2016-04-30
- Updated: 2017-11-29
- Resolved: 2016-07-21
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| JDK 8 | JDK 9 |
|---|---|
8u152Fixed  |
9 b129Fixed |
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Description
The following code hits an assert during compilation:
static int test(Object o) {
return UNSAFE.getInt(o, F_OFFSET);
}
# Internal Error (/Users/vlivanov/ws/jdk/hs-comp9/hotspot/src/share/vm/opto/library_call.cpp:2426), pid=12063, tid=23043
# assert(alias_type->adr_type() == TypeRawPtr::BOTTOM || alias_type->adr_type() == TypeOopPtr::BOTTOM || alias_type->basic_type() != T_ILLEGAL) failed: field, array element or unknown
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