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From: "hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sources.redhat.com
Subject: [Bug dynamic-link/14370] ld.so crashes on mismatched TLS/non-TLS symbols
Date: Tue, 04 Sep 2012 19:09:00 -0000
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http://sourceware.org/bugzilla/show_bug.cgi?id=14370

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
                 CC|                            |hjl.tools at gmail dot com
         Resolution|INVALID                     |
            Summary|SIGFPE in 'ldd -r'          |ld.so crashes on mismatched
                   |                            |TLS/non-TLS symbols

--- Comment #15 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-04 19:09:38 UTC ---
I don't think ld.so should crash on bad DSO built with the
old/bad glibc/binutils:

[hjl@gnu-6 pr14370]$ cat x.c
#if 0
#include <errno.h>
#else
int errno = 3;
#endif

int
bar (void)
{
  errno = 4;
  return errno;
}
[hjl@gnu-6 pr14370]$ cat main.c 
#include <stdio.h>
#include <dlfcn.h>

int
main ()
{
  void *handle;
  int (*func)();

  handle = dlopen ("./libfoo.so", RTLD_LAZY);

  if (!handle)
    {
      fprintf (stderr, "%s\n", dlerror());
      return 1;
    }

  func = dlsym (handle, "bar");
  if (func == NULL)
    {
      fprintf (stderr, "%s\n", dlerror());
      return 1;
    }

  printf ("errno: %d\n", func ());

  dlclose (handle);

  return 0;
}
[hjl@gnu-6 pr14370]$ make GLIBC-DIR= run.dynamic
gcc -m32    -c -o main.o main.c
gcc -m32 -o dynamic main.o -ldl
gcc -m32    -c -o x.o x.c
./ld -m elf_i386 -shared -o libfoo.so x.o -lm
./dynamic
make: *** [run.dynamic] Segmentation fault
[hjl@gnu-6 pr14370]$

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