http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60635
Bug ID: 60635
Summary: ICE when mixing C and Fortran lto1: error: use operand
missing for stmt
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: vladimir.fuka at gmail dot com
The code is quite possibly non-standard or totally buggy, but prints the
expected answer without -flto.
bigend.c:
#include <stdint.h>
#include <stdbool.h>
static bool littleendian=true;
uint16_t bigendc16(union{uint16_t * n;uint8_t* b;}x){
if (!littleendian) return *x.n;
uint16_t res = ((uint16_t)(x.b[1])<<0) |
((uint16_t)(x.b[0])<<8);
return res;
}
testbigend.f90:
program test
use iso_fortran_env
interface
integer(int16) function bigendc16(x) bind(C)
import
integer(int16), intent(in) :: x
end function
end interface
integer(int16) :: x16 = 12345
x16 = bigendc16(x16)
print *,x16
end program
> gfortran-4.9 bigend.c testbigend.f90 -Ofast -flto
In function 'bigendc16.constprop':
lto1: error: use operand missing for stmt
_13
# .MEM_15 = VDEF <.MEM_14(D)>
x = VIEW_CONVERT_EXPR<union
{
uint16_t * n;
uint8_t * b;
}>(_13);
lto1: internal compiler error: verify_ssa failed
0xad59db verify_ssa(bool)
../../gcc-svn/gcc/tree-ssa.c:1096
0x88530c execute_function_todo
../../gcc-svn/gcc/passes.c:1854
0x885c33 execute_todo
../../gcc-svn/gcc/passes.c:1887
0x887ac1 execute_one_ipa_transform_pass
../../gcc-svn/gcc/passes.c:2076
0x887ac1 execute_all_ipa_transforms()
../../gcc-svn/gcc/passes.c:2107
0x887c51 apply_ipa_transforms
../../gcc-svn/gcc/passes.c:2121
0x885af1 do_per_function
../../gcc-svn/gcc/passes.c:1583
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: gfortran-4.9 returned 1 exit status
/usr/bin/ld: lto-wrapper failed
collect2: error: ld returned 1 exit status
