The assert duplicates in loom repo (currently at jdk-20+20) when running one of the Thread tests with:

make run-test TEST=open/test/jdk/java/lang/Thread/virtual/ThreadAPI.java#no-vmcontinuations JTREG_MAIN_WRAPPER=Virtual TEST_OPTS_JAVA_OPTIONS="-Xcomp"

JTREG_MAIN_WRAPPER=Virtual means the test runs with the main thread as a virtual thread. This jtreg support is not in the main line so I can't say if this duplicates in the main line or not.



#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/home/albatem/ws/loom/open/src/hotspot/share/opto/output.cpp:1734), pid=1612912, tid=1612928
# assert(!is_mcall || (call_returns[block->_pre_order] <= (uint)current_offset)) failed: ret_addr_offset() not within emitted code
#
# JRE version: Java(TM) SE Runtime Environment (20.0) (fastdebug build 20-internal-2022-10-21-1050470.albatem...)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 20-internal-2022-10-21-1050470.albatem..., compiled mode, sharing, tiered, compressed oops, compressed class ptrs,
 g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x171731c] PhaseOutput::fill_buffer(CodeBuffer*, unsigned int*)+0x26cc


Current CompileTask:
C2: 14697 3072 b 4 jdk.internal.misc.InnocuousThread::run (24 bytes)

Stack: [0x00007fd4bfb00000,0x00007fd4bfc00000], sp=0x00007fd4bfbfabc0, free space=1002k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x171731c] PhaseOutput::fill_buffer(CodeBuffer*, unsigned int*)+0x26cc (output.cpp:1734)
V [libjvm.so+0xae628e] Compile::Code_Gen()+0x42e (compile.cpp:3001)
V [libjvm.so+0xaebd46] Compile::Compile(ciEnv*, ciMethod*, int, Options, DirectiveSet*)+0x16c6 (compile.cpp:864)
V [libjvm.so+0x903c97] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x687 (c2compiler.cpp:113)
V [libjvm.so+0xaf892c] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xa9c (compileBroker.cpp:2240)
V [libjvm.so+0xaf9758] CompileBroker::compiler_thread_loop()+0x608 (compileBroker.cpp:1916)
V [libjvm.so+0x105cd56] JavaThread::thread_main_inner()+0x206 (javaThread.cpp:702)
V [libjvm.so+0x1a51e60] Thread::call_run()+0x100 (thread.cpp:224)
V [libjvm.so+0x16edbf3] thread_native_entry(Thread*)+0x103 (os_linux.cpp:710)