Attachment #468 for bug #900

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Lines 5-9 int main() Link Here

(-)lib_vinegret/executable.c (+2 lines)
5	{	5	{
6	libv1_user_func();	6	libv1_user_func();
7	libv2_user_func();	7	libv2_user_func();
		8	libv1_user_func();
		9	libv2_user_func();
8	return 0;	10	return 0;
9	}	11	}




#include <stdio.h>
#include <dlfcn.h>

void *lib_v2_user;
void (*libv2_user_orig)();

void __init()
{
    lib_v2_user = dlopen("./lib_v2_user.so", RTLD_LAZY|RTLD_DEEPBIND);
    if (lib_v2_user) {
        *(void **)(&libv2_user_orig) = dlsym(lib_v2_user, "libv2_user_func");
    } else {
        fprintf(stderr, "%s\n", dlerror());
    }
}

void libv2_user_func()
{
    (*libv2_user_orig)();
}

Lines 15-21 lib_v1_user.so: lib_v1_user.c lib_v1.so Link Here

(-)lib_vinegret/Makefile (-1 / +4 lines)
15	lib_v2_user.so: lib_v2_user.c lib_v2.so	15	lib_v2_user.so: lib_v2_user.c lib_v2.so
16	gcc $(shared) $(rpath) $^ -o $@	16	gcc $(shared) $(rpath) $^ -o $@
17		17
18	executable: executable.c lib_v1_user.so lib_v2_user.so	18	lib_v2_user_scoper.so: lib_v2_user_scoper.c lib_v2_user.so
		19	gcc $(shared) $(rpath) -Xlinker -init=__init $< -ldl -o $@
		20
		21	executable: executable.c lib_v1_user.so lib_v2_user_scoper.so
19	gcc $(rpath) $^ -o $@	22	gcc $(rpath) $^ -o $@
20		23
21	clean:	24	clean:

Return to bug 900

Line 0 Link Here

(-)lib_vinegret/lib_v2_user_scoper.c (+20 lines)
	1	#include <stdio.h>
	2	#include <dlfcn.h>
	3
	4	void *lib_v2_user;
	5	void (*libv2_user_orig)();
	6
	7	void __init()
	8	{
	9	lib_v2_user = dlopen("./lib_v2_user.so", RTLD_LAZY\|RTLD_DEEPBIND);
	10	if (lib_v2_user) {
	11	(void *)(&libv2_user_orig) = dlsym(lib_v2_user, "libv2_user_func");
	12	} else {
	13	fprintf(stderr, "%s\n", dlerror());
	14	}
	15	}
	16
	17	void libv2_user_func()
	18	{
	19	(*libv2_user_orig)();
	20	}