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Test cases for correct unloading.
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Ulrich Drepper committed Mar 18, 2005
1 parent 61995d3 commit 193af75
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Showing 6 changed files with 140 additions and 0 deletions.
48 changes: 48 additions & 0 deletions elf/unload4.c
@@ -0,0 +1,48 @@
#include <dlfcn.h>
#include <stdio.h>
#include <malloc.h>

int
main (void)
{
#ifdef M_PERTURB
mallopt (M_PERTURB, 0xaa);
#endif

void *h;
int (*fn) (int);
h = dlopen ("unload4mod1.so", RTLD_LAZY);
if (h == NULL)
{
puts ("1st dlopen failed");
return 1;
}
fn = dlsym (h, "foo");
if (fn == NULL)
{
puts ("dlsym failed");
return 1;
}
int n = fn (10);
if (n != 28)
{
printf ("foo (10) returned %d != 28\n", n);
return 1;
}
dlclose (h);
h = dlopen ("unload4mod3.so", RTLD_LAZY);
fn = dlsym (h, "mod3fn2");
if (fn == NULL)
{
puts ("second dlsym failed");
return 1;
}
n = fn (10);
if (n != 22)
{
printf ("mod3fn2 (10) returned %d != 22\n", n);
return 1;
}
dlclose (h);
return 0;
}
10 changes: 10 additions & 0 deletions elf/unload4mod1.c
@@ -0,0 +1,10 @@
#include <stdio.h>

extern int bar (int);

int
foo (int x)
{
puts ("in foo");
return bar (x / 2) + 2;
}
8 changes: 8 additions & 0 deletions elf/unload4mod2.c
@@ -0,0 +1,8 @@
#include <stdio.h>

int
baz (int x)
{
puts ("in baz");
return x * 4;
}
16 changes: 16 additions & 0 deletions elf/unload4mod3.c
@@ -0,0 +1,16 @@
#include <stdio.h>

int
__attribute__((noinline))
mod3fn1 (int x)
{
puts ("in mod3fn1");
return x + 6;
}

int
mod3fn2 (int x)
{
puts ("in mod3fn2");
return mod3fn1 (x / 2) * 2;
}
16 changes: 16 additions & 0 deletions elf/unload4mod4.c
@@ -0,0 +1,16 @@
#include <stdio.h>
#include <stdlib.h>

int
__attribute__((noinline))
baz (int x)
{
abort ();
}

int
bar (int x)
{
puts ("in bar");
return baz (x + 1) + 2;
}
42 changes: 42 additions & 0 deletions elf/unload5.c
@@ -0,0 +1,42 @@
#include <dlfcn.h>
#include <stdio.h>

int
main (void)
{
void *g = dlopen ("unload3mod1.so", RTLD_GLOBAL | RTLD_NOW);
void *h = dlopen ("unload3mod2.so", RTLD_GLOBAL | RTLD_NOW);
if (g == NULL || h == NULL)
{
printf ("dlopen unload3mod{1,2}.so failed: %p %p\n", g, h);
return 1;
}
dlopen ("unload3mod4.so", RTLD_GLOBAL | RTLD_NOW);
dlclose (h);
dlclose (g);

g = dlopen ("unload3mod3.so", RTLD_GLOBAL | RTLD_NOW);
h = dlopen ("unload3mod4.so", RTLD_GLOBAL | RTLD_NOW);
if (g == NULL || h == NULL)
{
printf ("dlopen unload3mod{3,4}.so failed: %p %p\n", g, h);
return 1;
}

int (*fn) (int);
fn = dlsym (h, "bar");
if (fn == NULL)
{
puts ("dlsym failed");
return 1;
}

int val = fn (16);
if (val != 24)
{
printf ("bar returned %d != 24\n", val);
return 1;
}

return 0;
}

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