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@ -88,9 +88,9 @@ Problem: A statically-linked "hello world" program crashes after
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reading a thread-local variable.
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reading a thread-local variable.
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Investigation: Thread-local variables are very different from other
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Investigation: Thread-local variables are very different from other
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types of varaibles because there may be more than one instance of the
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types of variables because there may be more than one instance of the
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same variable in memory. Each thread has its copy of thread-local
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same variable in memory. Each thread has its copy of thread-local
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varaibles. `%fs` segment register points the end of the variable area
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variables. `%fs` segment register points the end of the variable area
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for the current thread, and the variables are accessed as an offset
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for the current thread, and the variables are accessed as an offset
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from `%fs`.
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from `%fs`.
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