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Allow symbols used for scopes to move #10550

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Allow symbols used for scopes to move #10550

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Commits on Apr 16, 2024

  1. Allow symbols used for scopes to move 

    This commit allows symbols used for instance variables, global variables,
constants, class names to be moved by GC compaction.

For example:

    require "objspace"

    Object.const_set("Hello".to_sym, 1)
    sym = "Hello".to_sym

    puts ObjectSpace.dump(sym)
    GC.verify_compaction_references(expand_heap: true, toward: :empty)
    puts ObjectSpace.dump(sym)

Before:

    {"address":"0x101274ac8", "type":"SYMBOL", ... }
    {"address":"0x101274ac8", "type":"SYMBOL", ... }

After:

    {"address":"0x101544a78", "type":"SYMBOL", ... }
    {"address":"0x1015d7f80", "type":"SYMBOL", ... }
    @peterzhu2118
    peterzhu2118 committed Apr 16, 2024
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