George Anzinger writes:
> Soon as you depend on this some OS dude will fill bss with -1s so he can
> tell what was used... or some such. Seems like a bad idea to depend on
> bss being anything at all.
The BSS is defined to be the segment which is filled with zeros. If you
fill it with any other value at startup, any program that uses it will
break. Therefore, you have two choices:
1. Have a BSS, and fill it with zeros, or
2. Don't have a BSS at all.
In the age old days of Linux, option 2 was the one selected. Today, all
Linux kernels have a BSS, and it is filled with zeros.
_____
|_____| ------------------------------------------------- ---+---+-
| | Russell King rmk@arm.linux.org.uk --- ---
| | | | http://www.arm.linux.org.uk/~rmk/aboutme.html / / |
| +-+-+ --- -+-
/ | THE developer of ARM Linux |+| /|\
/ | | | --- |
+-+-+ ------------------------------------------------- /\\\ |
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