Re: Writable global section?

From: Andreas Schwab (schwab@suse.de)
Date: Wed Oct 09 2002 - 10:06:55 EST


"Richard B. Johnson" <root@chaos.analogic.com> writes:

|> If a variable is in the ".data" section, it is "seen" by all procedures
|> that are linked to the shared library, but any attempt to write to this
|> variable will seg-fault the task that attempts to modify it.

Your tests must be flawed, because a .data section *is* writable. The
only difference between .data and .bss is that the latter has no
allocation in the image file, but they are mapped to the same, writable
segment.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
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