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8343984: Fix Unsafe address overflow

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Reviewed-by: pminborg, alanb
This commit is contained in:
Shaojin Wen 2024-11-13 23:17:26 +00:00
parent 168b18ec68
commit 0dab920b70
11 changed files with 34 additions and 34 deletions
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22
src/java.base/share/classes/java/lang/StringLatin1.java
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@ -830,22 +830,22 @@ final class StringLatin1 {
static void putCharsAt(byte[] val, int index, int c1, int c2, int c3, int c4) {
assert index >= 0 && index + 3 < length(val) : "Trusted caller missed bounds check";
// Don't use the putChar method, Its instrinsic will cause C2 unable to combining values into larger stores.
long address = Unsafe.ARRAY_BYTE_BASE_OFFSET + index;
UNSAFE.putByte(val, address , (byte)(c1));
UNSAFE.putByte(val, address + 1, (byte)(c2));
UNSAFE.putByte(val, address + 2, (byte)(c3));
UNSAFE.putByte(val, address + 3, (byte)(c4));
long offset = (long) Unsafe.ARRAY_BYTE_BASE_OFFSET + index;
UNSAFE.putByte(val, offset , (byte)(c1));
UNSAFE.putByte(val, offset + 1, (byte)(c2));
UNSAFE.putByte(val, offset + 2, (byte)(c3));
UNSAFE.putByte(val, offset + 3, (byte)(c4));
}
static void putCharsAt(byte[] val, int index, int c1, int c2, int c3, int c4, int c5) {
assert index >= 0 && index + 4 < length(val) : "Trusted caller missed bounds check";
// Don't use the putChar method, Its instrinsic will cause C2 unable to combining values into larger stores.
long address = Unsafe.ARRAY_BYTE_BASE_OFFSET + index;
UNSAFE.putByte(val, address , (byte)(c1));
UNSAFE.putByte(val, address + 1, (byte)(c2));
UNSAFE.putByte(val, address + 2, (byte)(c3));
UNSAFE.putByte(val, address + 3, (byte)(c4));
UNSAFE.putByte(val, address + 4, (byte)(c5));
long offset = (long) Unsafe.ARRAY_BYTE_BASE_OFFSET + index;
UNSAFE.putByte(val, offset , (byte)(c1));
UNSAFE.putByte(val, offset + 1, (byte)(c2));
UNSAFE.putByte(val, offset + 2, (byte)(c3));
UNSAFE.putByte(val, offset + 3, (byte)(c4));
UNSAFE.putByte(val, offset + 4, (byte)(c5));
}
public static void putChar(byte[] val, int index, int c) {