[Bug lto/43857] New: -fresolution causes an ICE

[kargl at gcc dot gnu dot org]

in gcc/lto/lang.opt, one finds an -fresolution option.
First, this option appears undocumented, but more
importantly 


troutmask:sgk[228] cat h.c
#include <stdio.h>

void
hello(void)
{
  printf("Hello world\n");
}
troutmask:sgk[229] cat m.c
void hello(void);

int
main(void)
{
  hello();
  return (0);
}

troutmask:sgk[230] cat Makefile
all:
        ${HOME}/work/4x/bin/gcc -flto -c m.c
        ${HOME}/work/4x/bin/gcc -flto -c h.c
        ${HOME}/work/4x/bin/gcc -flto -o z h.o m.o
        ./z
        ${HOME}/work/4x/bin/gcc -flto -fresolution -o z h.o m.o

clean:
        rm *.o

troutmask:sgk[231] make
/home/sgk/work/4x/bin/gcc -flto -c m.c
/home/sgk/work/4x/bin/gcc -flto -c h.c
/home/sgk/work/4x/bin/gcc -flto -o z h.o m.o
./z
Hello world
/home/sgk/work/4x/bin/gcc -flto -fresolution -o z h.o m.o
lto1: internal compiler error: in read_cgraph_and_symbols, at lto/lto.c:1797
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: /home/sgk/work/4x/bin/gcc returned 1 exit status
collect2: lto-wrapper returned 1 exit status
*** Error code 1

Stop in /usr/home/sgk/tmp/ctest.


-- 
           Summary: -fresolution causes an ICE
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: kargl at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43857