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  1. JDK
  2. JDK-8149330

Capacity of StringBuilder should not get close to Integer.MAX_VALUE unless necessary

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    • b109

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      Description

        With the current implementation, the following code can trigger OOM, even though there might still be enough room to grow.

                    StringBuilder sb = new StringBuilder();
                    sb.ensureCapacity(Integer.MAX_VALUE / 2);
                    sb.ensureCapacity(Integer.MAX_VALUE / 2 + 1);

        The exception reports:
        Exception in thread "main" java.lang.OutOfMemoryError: Requested array size exceeds VM limit,
         which means we tried to allocate Integer.MAX_VALUE elements array.

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8151027 Capacity of StringBuilder should not get close to Integer.MAX_VALUE unless necessary

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8151028 Capacity of StringBuilder should not get close to Integer.MAX_VALUE unless necessary

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8156331 Capacity of StringBuilder should not get close to Integer.MAX_VALUE unless necessary

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8162169 Capacity of StringBuilder should not get close to Integer.MAX_VALUE unless necessary

            • P3 - Major loss of function.
            • Resolved
            duplicates

            Bug - A problem which impairs or prevents the functions of the product. JDK-8029587 Jdk 7u45 > java.lang.outofmemoryerror: requested array size exceeds vm limit

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8219409 Clarify capacity of StringBuffer/StringBuilder near Integer.MAX_VALUE

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Open

            Bug - A problem which impairs or prevents the functions of the product. JDK-8029784 (str) StringBuilder and StringBuffer fail when initialized with large strings

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Closed

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                igerasim Ivan Gerasimov
                shadowbug Shadow Bug
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                  Created:
                  Updated:
                  Resolved: