Question about os::getenv()

[Jeremy Manson]

Hey folks,

We had a request internally to make it so that JAVA_TOOL_OPTIONS could
accept something longer than 1024 characters.  See:

Arguments::parse_options_environment_variable(const char* name,
SysClassPath* scp_p, bool* scp_assembly_required_p)

in

http://hg.openjdk.java.net/jdk9/jdk9/hotspot/file/27f0413cbea3/src/share/vm/runtime/arguments.cpp

Would you folks be amenable to a refactoring so that getenv returns a newly
allocated array with the contents of the envvar, which the caller has to
delete?

Jeremy
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