[Bug ld/19719] New: Mixing PIC and non-PIC input files generates unexpected result

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19719

            Bug ID: 19719
           Summary: Mixing PIC and non-PIC input files generates
                    unexpected result
           Product: binutils
           Version: 2.27 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---
            Target: x86

address@hidden weak-4]$ cat foo.c 
extern int __attribute__ ((weak)) fun (void);
int
foo (void)
{
  if (&fun != 0)
    return fun ();
  return 0;
}
address@hidden weak-4]$ cat bar.c 
extern int __attribute__ ((weak)) fun (void);
int
bar (void)
{
  if (&fun != 0)
    return fun ();
  return 0;
}
address@hidden weak-4]$ cat main.c 
#include <stdlib.h>

extern int foo (void);
extern int bar (void);

int
main (void)
{
  if (foo () != bar ())
    abort ();
  return 0;
}
address@hidden weak-4]$ cat fun1.c 
/* Dummy */
address@hidden weak-4]$ cat fun2.c 
int
fun (void)
{
  return 20;
}
address@hidden weak-4]$ make
gcc -B./ -O2   -c -o foo.o foo.c
gcc -B./ -O2 -fPIC   -c -o bar.o bar.c
gcc -B./ -O2   -c -o main.o main.c
gcc -B./ -shared -Wl,-soname,libfun.so -fPIC -O2 -o libfun1.so fun1.c
gcc -B./ -shared -Wl,-soname,libfun.so -fPIC -O2 -o libfun2.so fun2.c
ln -sf libfun1.so libfun.so
gcc -B./ -O2 -o x foo.o bar.o main.o libfun.so -Wl,-R,.
ln -sf libfun1.so libfun.so
./x
ln -sf libfun2.so libfun.so
./x
Makefile:20: recipe for target 'all' failed
make: *** [all] Aborted
address@hidden weak-4]$

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