--- /dev/null
+++ dyld/dyld-1162/mach_o/Version32.cpp
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2017 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <stdint.h>
+#include <string.h>
+#include <assert.h>
+#include <charconv>
+
+#include "Version32.h"
+
+namespace mach_o {
+
+
+Error Version32::fromString(std::string_view versString, Version32& vers,
+                            void (^ _Nullable truncationHandler)(void))
+{
+    // Initialize default value
+    vers = Version32();
+
+    uint32_t x = 0;
+    uint32_t y = 0;
+    uint32_t z = 0;
+    const char* endPtr = versString.data() + versString.size();
+    auto res = std::from_chars(versString.data(), endPtr, x);
+    if ( res.ec == std::errc{} && *res.ptr == '.' ) {
+        res = std::from_chars(res.ptr + 1, endPtr, y);
+        if ( res.ec == std::errc{} && *res.ptr == '.' )
+            res = std::from_chars(res.ptr + 1, endPtr, z);
+    }
+    bool valueOverflow = (x > 0xffff) || (y > 0xff) || (z > 0xff);
+    if ( valueOverflow && truncationHandler ) {
+        truncationHandler();
+        x = std::min(x, 0xFFFFU);
+        y = std::min(y, 0xFFU);
+        z = std::min(z, 0xFFU);
+        valueOverflow = false;
+    }
+    if ( res.ptr == nullptr || res.ptr != endPtr || valueOverflow ) {
+        if ( valueOverflow || (truncationHandler == nullptr) || (res.ptr == versString.data()) ) {
+            char errVersString[versString.size() + 1];
+            memcpy(errVersString, versString.data(), versString.size());
+            errVersString[versString.size()] = 0;
+            return Error("malformed version number '%s' cannot fit in 32-bit xxxx.yy.zz", (const char*)errVersString);
+        }
+    }
+
+    vers = Version32(x, y, z);
+    return Error::none();
+}
+
+
+static void appendDigit(char*& s, unsigned& num, unsigned place, bool& startedPrinting)
+{
+    if ( num >= place ) {
+        unsigned dig = (num/place);
+        *s++ = '0' + dig;
+        num -= (dig*place);
+        startedPrinting = true;
+    }
+    else if ( startedPrinting ) {
+        *s++ = '0';
+    }
+}
+
+static void appendNumber(char*& s, unsigned num)
+{
+    assert(num < 99999);
+    bool startedPrinting = false;
+    appendDigit(s, num, 10000, startedPrinting);
+    appendDigit(s, num,  1000, startedPrinting);
+    appendDigit(s, num,   100, startedPrinting);
+    appendDigit(s, num,    10, startedPrinting);
+    appendDigit(s, num,     1, startedPrinting);
+    if ( !startedPrinting )
+        *s++ = '0';
+}
+
+
+const char* Version32::toString(char buffer[32]) const
+{
+    // sprintf(versionString, "%d.%d.%d", (_raw >> 16), ((_raw >> 8) & 0xFF), (_raw & 0xFF));
+    char* s = buffer;
+    appendNumber(s, (_raw >> 16));
+    *s++ = '.';
+    appendNumber(s, (_raw >> 8) & 0xFF);
+    unsigned micro = (_raw & 0xFF);
+    if ( micro != 0 ) {
+        *s++ = '.';
+        appendNumber(s, micro);
+    }
+    *s++ = '\0';
+    return buffer;
+}
+
+
+
+} // namespace mach_o
+
+
+
+
+