clang mangling some static struct names?
Alfred Perlstein
bright at mu.org
Sun Nov 18 16:59:12 UTC 2012
On Nov 18, 2012, at 5:37 AM, Dimitry Andric <dim at FreeBSD.org> wrote:
> On 2012-11-16 23:04, Navdeep Parhar wrote:
>> On 11/16/12 13:49, Roman Divacky wrote:
>>> Yes, it does that. iirc so that you can have things like
>>>
>>> void foo(int cond) {
>>> if (cond) {
>>> static int i = 7;
>>> } else {
>>> static int i = 8;
>>> }
>>> }
>>>
>>> working correctly.
>>
>> It's not appending the .n everywhere. And when it does, I don't see any
>> potential collision that it prevented by doing so. Instead, it looks
>> like the .n symbol corresponds to the nth element in the structure (so
>> this is not name mangling in the true sense). I just don't see the
>> point in doing things this way. It is only making things harder for
>> debuggers.
>
> I don't think the point is making things harder for debuggers, the point
> is optimization. Since static variables and functions can be optimized
> away, or arbitrarily moved around, you cannot count on those symbols
> being there at all.
Bro, do you even debug?
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