Tests:
 - java/lang/StringBuffer/ECoreIndexOf.java#id1
 - java/lang/String/IndexOf.java#id1

#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000021749a013a6, pid=15148, tid=17216
#
# JRE version: (24.0+25) (fastdebug build )
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 24-ea+25-3158, mixed mode, sharing, compressed oops, compressed class ptrs, g1 gc, windows-amd64)
# Problematic frame:
# v ~StubRoutines::verify_mxcsr 0x0000021749a013a6

--------------- T H R E A D ---------------

Current thread (0x00000217411ed5a0): JavaThread "Unknown thread" [_thread_in_native, id=17216, stack(0x0000002f6c200000,0x0000002f6c300000) (1024K)]

Stack: [0x0000002f6c200000,0x0000002f6c300000], sp=0x0000002f6c2fd720, free space=1013k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C 0x0000021749a013a6 (no source info available)

The last pc belongs to verify_mxcsr (printed below).
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j java.lang.Class.desiredAssertionStatus0(Ljava/lang/Class;)Z+0 java.base@24-ea
j java.lang.Class.desiredAssertionStatus()Z+10 java.base@24-ea
j java.lang.ThreadGroup.<clinit>()V+2 java.base@24-ea
v ~StubRoutines::call_stub 0x0000021749a0105d

siginfo: EXCEPTION_ACCESS_VIOLATION (0xc0000005), reading address 0xffffffffffffffff

Test: