From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
To: gcc2@cygnus.com, egcs@cygnus.com
Subject: alloca + function call
Date: Wed, 03 Dec 1997 17:03:00 -0000
Message-id: <x7hg8q11y0.fsf@myware.rz.uni-karlsruhe.de>
X-SW-Source: 1997-12/msg00219.html

Hi,

Could gcc be changed in a way that code like

	a = foo (alloca (42), b);

generated an error (or at least a warning)?  On machines which pass
parameters on the stack a straight forward implementation (in ix86 asm)

	pushl	b
	subl	$42, %esp	allocate 42 bytes on stack
	pushl	%esp
	call	foo

will fail miserable.

-- Uli
---------------.      drepper at gnu.org  ,-.   Rubensstrasse 5
Ulrich Drepper  \    ,-------------------'   \  76149 Karlsruhe/Germany
Cygnus Solutions `--' drepper at cygnus.com   `------------------------