RE: [Tinycc-devel] jmp_buf align problem on win64

[Christian Jullien]

Ooooh! I understand.
I spent many time in parse_attribute, parse_btype and some other functions
to wonder why __atribute__, which is correctly read, was not propagated up
to code generation.

While debugging, I had the impression that information was lost from
AttributeDef until I gave up due to lack of time.

Well, thanks for explanation; if I was ready to try to fix it, I'm not sure
I have the time to implement it. Sorry.

Anyway, thanks for your good job and your support.

Christian

-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf Of
grischka
Sent: jeudi 3 décembre 2009 19:15
To: address@hidden
Subject: Re: [Tinycc-devel] jmp_buf align problem on win64


ketmar wrote:
> On Thu, 3 Dec 2009 16:42:45 +0100
> "Christian Jullien" <address@hidden> wrote:
> 
>> I'm using headers from tcc.
>> Thanks for your suggestion, I'm not trying to fix my code which is
>> already fixed (easy) I'm trying to contribute to improve tcc by
>> fixing the problem itself.
> sure. i'm just trying to point the possible source of the problem.
> knowing the source is a great part of solution.
> 
> also, tcc uses minGW headers on windows, afair. maybe defining built-in
> __GNUC__ 3 or disallowing macro processor to define macro
> with name __attribute__ can be an easy fix for this problem.
> 

It is more trivial: it is not implemented. tcc sees the "aligned"
attribute, but there is no code and not even a field to store it
in a typedef.

So basically you need to invent something, such as:
- Store the alignment in the typedef symbol (somehow)
   (that is in decl() at line "if (btype.t & VT_TYPEDEF) {")
- Get it back from a typedef symbol into the attribute
   (that is in parse_btype() at line "typedef_found = 1;")

--- grischka



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