OutOfMemoryError on big text chunk

Hi all,

I'm processing a 5.7M XML template through FreeMarker (version 2.3.11). With
-Xmx128m I get an OutOfMemoryError

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOf(Arrays.java:2882)
    at java.lang.AbstractStringBuilder.expandCapacity(
AbstractStringBuilder.java:100)
    at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java
:390)
    at java.lang.StringBuffer.append(StringBuffer.java:224)
    at freemarker.core.FMParser.PCData(FMParser.java:2497)
    at freemarker.core.FMParser.Content(FMParser.java:2570)
    at freemarker.core.FMParser.OptionalBlock(FMParser.java:2784)
    at freemarker.core.FMParser.Root(FMParser.java:2956)

with -Xmx192m it works.

The template does not actually contain any FreeMarker instructions (it's an
ad hoc test to reproduce the problem).  If I put a random expression like
${foo!} in the middle of the document then it works with less memory,
-Xmx96m is enough.

So I guess the problem may be with big chunks of text without any
expressions (TextBlock?). But the whole file being 5.7M, why does it need
more than 128M to do the parsing?

Thanks

Mirko

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