stack size

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1 total messages Started by Glen Herrmannsfeldt Wed, 22 Jul 1992 18:38

#414

Author: Glen Herrmannsfeldt
Date: Wed, 22 Jul 1992 18:38

26 lines
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link386 seems to have a 2k default stack.

I just finished a series of bug reports to bug-gcc that I finally
decided were due to too small a stack.  I call to getchar() would
write over parts of program memory.


Then I tried different stack sizes with link386.

4k, 256k, 4MB, 64MB, 1GB, 256MB.

Up to 64MB ran fine, fast, etc.  Apparently it does not need to 
allocate the whole thing in real or swap space.

At 1GB it refused to load.

At 256MB it got an internal processing error, which, if I figure out
how, I will report to IBM.  (Any one from IBM?  How do I do this?)

It seems that there is little penalty for a big stack, and a large
penalty (clobbered memory) for a small stack.  Why not have a big default
stack?

Has anyone else experienced any of this?

Remember, a call to getchar() and nothing else will overflow a 2K stack!

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