[Bug 223752] clang __attribute__((constructor)) gets wrong input parameters

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223752

--- Comment #13 from Mark Millard <markmi at dsl-only.net> ---
(In reply to dstaesse from comment #10)

The materials that you have referenced
indicate that __attribute__ ((constructor))
gets no arguments. Details follow.

>From the materials you referenced:

QUOTE
The .preinit_array and .init_array sections must contain function pointers (NOT
code!) The prototype of these functions must be
void func(int argc,char** argv,char** envp)
__libc_csu_init execute them in the following order:
Function pointers in .preinit_array section
Functions marked as __attribute__ ((constructor)), via _init
Function pointers in .init_array section
END QUOTE

Note that __attribute__ ((constructor)) is not for the
*init_array usage, just for usage inside _init .

And from the elf-init.c that you listed:

#ifndef NO_INITFINI
  _init ();
#endif

has no arguments.

So, __attribute__ ((constructor)) routines are called
form a context not explicitly having the erguments
available.

-- 
You are receiving this mail because:
You are the assignee for the bug.