workaround bug in FastDoubleParser

Author: pjfanning

src/main/java/com/fasterxml/jackson/core/io/BigDecimalParser.java

@@ -40,7 +40,11 @@ private BigDecimalParser() {}
      * @throws NumberFormatException
      */
     public static BigDecimal parse(String valueStr) {
-        return parse(valueStr.toCharArray());
+        if (valueStr.length() < 500) {
+            return new BigDecimal(valueStr);
+        }
+        // workaround https://github.com/FasterXML/jackson-databind/issues/4694
+        return JavaBigDecimalParser.parseBigDecimal(valueStr);
     }
 
     /**
@@ -58,7 +62,8 @@ public static BigDecimal parse(final char[] chars, final int off, final int len)
             if (len < 500) {
                 return new BigDecimal(chars, off, len);
             }
-            return JavaBigDecimalParser.parseBigDecimal(chars, off, len);
+            // workaround https://github.com/FasterXML/jackson-databind/issues/4694
+            return JavaBigDecimalParser.parseBigDecimal(new String(chars, off, len));
 
         // 20-Aug-2022, tatu: Although "new BigDecimal(...)" only throws NumberFormatException
         //    operations by "parseBigDecimal()" can throw "ArithmeticException", so handle both:

src/test/java/com/fasterxml/jackson/core/io/BigDecimalParserTest.java

@@ -2,6 +2,7 @@
 
 import java.math.BigDecimal;
 
+import ch.randelshofer.fastdoubleparser.JavaBigDecimalParser;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.*;
@@ -51,6 +52,16 @@ void longValidStringFastParse() {
         assertEquals(EXP, BigDecimalParser.parseWithFastParser(num.toCharArray(), 0, num.length()));
     }
 
+    @Test
+    void issueDatabind4694() {
+        final String str = "-11000.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000";
+        final BigDecimal expected = new BigDecimal(str);
+        assertEquals(expected, JavaBigDecimalParser.parseBigDecimal(str));
+        assertEquals(expected, BigDecimalParser.parse(str));
+        final char[] arr = str.toCharArray();
+        assertEquals(expected, BigDecimalParser.parse(arr, 0, arr.length));
+    }
+
     static String genLongInvalidString() {
         final int len = 1500;
         final StringBuilder sb = new StringBuilder(len);