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Re: why are we not using const?
On Jun 27, 2006, at 6:29 AM, Manuel López-Ibáñez wrote:
On 27/06/06, Andrew Haley <aph@redhat.com> wrote:
Well, const functions are nonstandard, and gcc itself is written in
Standard C so they can't be used. But As for const args, I can't see
any good reason not to use them, and there are 400 uses in gcc.
I meant const arguments, sorry for the confusion. What about: 'const'
applied to trees, for example:
void foo(const tree type, const tree expr)
Perhaps there is some drawback there?
They are used, just not much.
More in the C front-end than other places:
c-decl.c:push_parm_decl (const struct c_parm *parm)
cfgloop.c:num_loop_branches (const struct loop *loop)
cfgloop.c:loop_latch_edge (const struct loop *loop)
varasm.c:const_hash_1 (const tree exp)
varasm.c:compare_constant (const tree t1, const tree t2)
etc.
-- Pinski