glibc/elf/testobj1.c

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#include <dlfcn.h>
#include <stdlib.h>
extern int foo (int);
int
obj1func1 (int a __attribute__ ((unused)))
{
return 42;
}
int
obj1func2 (int a)
{
return foo (a) + 10;
}
int
preload (int a)
{
int (*fp) (int) = dlsym (RTLD_NEXT, "preload");
if (fp != NULL)
return fp (a) + 10;
return 10;
}