<html>
<head>
<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - -static-pie doesn't work with IFUNC"
href="https://bugs.llvm.org/show_bug.cgi?id=48674">48674</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>-static-pie doesn't work with IFUNC
</td>
</tr>
<tr>
<th>Product</th>
<td>lld
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>ELF
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>hjl.tools@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>i@maskray.me, llvm-bugs@lists.llvm.org, smithp352@googlemail.com
</td>
</tr></table>
<p>
<div>
<pre>[hjl@gnu-cfl-2 ifunc-2]$ cat ifuncmain6pie.c
#include <stdlib.h>
typedef int (*foo_p) (void);
static int
one (void)
{
return -30;
}
int foo (void) __attribute__ ((ifunc ("foo_ifunc")));
foo_p foo_ptr = foo;
void *
foo_ifunc (void)
{
return one;
}
extern int foo (void);
extern int call_foo (void);
extern foo_p get_foo_p (void);
int
main (void)
{
foo_p p;
if (call_foo () != -30)
abort ();
p = get_foo_p ();
if (p != foo)
abort ();
if ((*p) () != -30)
abort ();
if (foo_ptr != foo)
abort ();
if ((*foo_ptr) () != -30)
abort ();
if (foo () != -30)
abort ();
return 0;
}
[hjl@gnu-cfl-2 ifunc-2]$ cat ifuncmod6.c
extern int foo (void);
typedef int (*foo_p) (void);
extern foo_p foo_ptr;
foo_p
get_foo_p (void)
{
return foo_ptr;
}
int
call_foo (void)
{
return foo ();
}
[hjl@gnu-cfl-2 ifunc-2]$ make
gcc -fPIE -c -o ifuncmain6pie.o ifuncmain6pie.c
gcc -fPIE -c -o ifuncmod6.o ifuncmod6.c
gcc -static-pie -o x.ld ifuncmain6pie.o ifuncmod6.o
gcc -fuse-ld=lld -static-pie -o x.lld ifuncmain6pie.o ifuncmod6.o
./x.ld
./x.lld
make: *** [Makefile:14: all] Segmentation fault (core dumped)
[hjl@gnu-cfl-2 ifunc-2]$</pre>
</div>
</p>
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