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 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided
 * with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used to
 * endorse or promote products derived from this software without specific prior written
 * permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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package com.oracle.truffle.llvm.nodes.impl.intrinsics.interop;

import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.llvm.types.LLVMAddress;
import com.oracle.truffle.llvm.types.memory.LLVMMemory;

public final class LLVMTruffleIntrinsicUtil {

    @TruffleBoundary
    public static String readString(LLVMAddress value) {
        byte c;
        LLVMAddress adr = value;
        StringBuilder sb = new StringBuilder();
        while ((c = LLVMMemory.getI8(adr)) != 0) {
            sb.append((char) c);
            adr = adr.increment(Byte.BYTES);
        }
        return sb.toString();
    }
}

@@ -2115,17 +2115,37 @@
 ((char) 
-c
+Byte.toUnsignedInt(c)
 );%0A     

Fix handling of most-significant bit in truffle_read_string