https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65581
--- Comment #11 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Thanks!
The resolution file is wrong:
1
test.o 1
172 795d441a PREEMPTED_REG main
the resolution of main() should be PREVAILING_DEF_IRONLY. PREEMTED_REG is
defined as follows:
PREEMPTED_REG (this definition was pre-empted by a definition in a regular
object file)
This is linker bug. It basicaly instructs GCC to drop the definition of main
because it is defined elsewhere.
However GCC is not ready for non-weak symbol to be preemted and produces the
function into final binary anyway:
.file "<artificial>"
.def __main; .scl 2; .type 32; .endef
.text
.globl main
.def main; .scl 2; .type 32; .endef
.seh_proc main
main:
subq $40, %rsp
.seh_stackalloc 40
.seh_endprologue
call __main
movl $0, %eax
addq $40, %rsp
ret
.seh_endproc
.ident "GCC: (GNU) 5.0.0 20150326 (experimental) [trunk revision
221697]"
Is something wrong with this assembly? How does the testecase comile w/o LTO?
