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https://issues.apache.org/jira/browse/LANG-1645?focusedWorklogId=561392&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-561392
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ASF GitHub Bot logged work on LANG-1645:
----------------------------------------
Author: ASF GitHub Bot
Created on: 05/Mar/21 11:46
Start Date: 05/Mar/21 11:46
Worklog Time Spent: 10m
Work Description: asfgit closed pull request #728:
URL: https://github.com/apache/commons-lang/pull/728
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Issue Time Tracking
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Worklog Id: (was: 561392)
Time Spent: 0.5h (was: 20m)
> NumberUtils.createNumber/createBigInteger fails on hexidecimal integers
> prefixed with +
> ---------------------------------------------------------------------------------------
>
> Key: LANG-1645
> URL: https://issues.apache.org/jira/browse/LANG-1645
> Project: Commons Lang
> Issue Type: Bug
> Components: lang.math.*
> Affects Versions: 3.12.0
> Reporter: Alex Herbert
> Assignee: Alex Herbert
> Priority: Minor
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> The Java Language Specification allows an optional sign prefix for a number
> as + or -.
> A + sign before a hex integer is not recognised by createNumber and
> createBigInteger but is recognised by isCreatable, createInteger and
> createLong. The two later functions delegate to Java's decode() function that
> handles an optional leading +.
> The following demonstrates the tests that fail but would pass if the leading
> '+' is removed.
> {code:java}
> @Test
> void testCreatePositiveHexInteger() {
> // Hex is only supported for integers so no test for hex floating
> point formats
> assertTrue(NumberUtils.isCreatable("+0xF"));
> assertTrue(NumberUtils.isCreatable("+0xFFFFFFFF"));
> assertTrue(NumberUtils.isCreatable("+0xFFFFFFFFFFFFFFFFF"));
> assertEquals(Integer.decode("+0xF"),
> NumberUtils.createInteger("+0xF"));
> assertEquals(Long.decode("+0xFFFFFFFF"),
> NumberUtils.createLong("+0xFFFFFFFF"));
> assertEquals(new BigInteger("+FFFFFFFFFFFFFFFF", 16),
> NumberUtils.createBigInteger("0xFFFFFFFFFFFFFFFF"));
> try {
> assertEquals(new BigInteger("+FFFFFFFFFFFFFFFF", 16),
> NumberUtils.createBigInteger("+0xFFFFFFFFFFFFFFFF"));
> Assertions.fail("This should be possible but it is not");
> } catch (NumberFormatException ex) {
> // This should not happen
> }
> assertEquals(Integer.decode("+0xF"),
> NumberUtils.createNumber("0xF"));
> try {
> assertEquals(Integer.decode("+0xF"),
> NumberUtils.createNumber("+0xF"));
> Assertions.fail("This should be possible but it is not");
> } catch (NumberFormatException ex) {
> // This should not happen
> }
> assertEquals(Long.decode("+0xFFFFFFFF"),
> NumberUtils.createNumber("0xFFFFFFFF"));
> try {
> assertEquals(Long.decode("+0xFFFFFFFF"),
> NumberUtils.createNumber("+0xFFFFFFFF"));
> Assertions.fail("This should be possible but it is not");
> } catch (NumberFormatException ex) {
> // This should not happen
> }
> assertEquals(new BigInteger("+FFFFFFFFFFFFFFFF", 16),
> NumberUtils.createNumber("0xFFFFFFFFFFFFFFFF"));
> try {
> assertEquals(new BigInteger("+FFFFFFFFFFFFFFFF", 16),
> NumberUtils.createNumber("+0xFFFFFFFFFFFFFFFF"));
> Assertions.fail("This should be possible but it is not");
> } catch (NumberFormatException ex) {
> // This should not happen
> }
> }
> {code}
> A simple fix is to check for a leading '+' character and advance all
> processing past this character.
>
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