scope of malloc

[Fred Bourgeois]

In article <14448 at smoke.brl.mil> gwyn at smoke.brl.mil (Doug Gwyn) writes:
>In article <3739 at skye.ed.ac.uk> richard at aiai.UUCP (Richard Tobin) writes:
>>Are there *any* widely-used processors that can't implement alloca()
>>reasonably efficiently even with compiler support?
>
>It can't be implemented correctly (except by the compiler turning it into
>malloc()/free() calls that you could have coded yourself) on any system
>that doesn't provide separate frame and stack pointers.  Just consider
>the effects of an interrupt.  It also cannot be reasonably implemented on
>a system that uses linked stack frames, such as on the IBM System/370.

You are Wrong.

Our compiler implements alloca() as an intrinsic, and does it correctly.

... even on the 370 ...

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Fred Bourgeois, MetaWare Inc., 2161 Delaware Avenue, Santa Cruz, CA 95060-2806
fjb at metaware.com					...!uunet!metaware!fjb
	     Colorless Green Ideas Sleep Furiously, and so do I.
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