Re: TLS (thread-local storage) support

[Szabolcs Nagy <nsz@port70.net>]

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* Rich Felker <dalias@aerifal.cx> [2012-10-05 13:27:29 -0400]:
> On Thu, Oct 04, 2012 at 11:04:14PM -0400, Rich Felker wrote:
> > Scratch that. It's now supported everywhere except dynamically loaded
> > (dlopen'd) shared libraries. And I'm working on adding support for
> 
> And they're working now too.
> 

should the attached code work with dlopen
when compiled as a dso?

(i wanted to check if the alignments are ok after a dlopen,
but i can see how this usage may not be supported)

it seems it dies here in the ctor

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#include <stddef.h>

__thread char      c1 = 1;
__thread char      xchar = 2;
__thread char      c2 = 3;
__thread short     xshort = 4;
__thread char      c3 = 5;
__thread int       xint = 6;
__thread char      c4 = 7;
__thread long long xllong = 8;

struct {
	char *name;
	size_t size;
	size_t align;
	size_t addr;
} t[4];

#define entry(i,x) \
	t[i].name = #x; \
	t[i].size = sizeof x; \
	t[i].align = __alignof__(x); \
	t[i].addr = (size_t)&x;

__attribute__((constructor)) static void init(void)
{
	entry(0, xchar)
	entry(1, xshort)
	entry(2, xint)
	entry(3, xllong)
}