src/tests/system/runtime_loader/test_suite/dlopen_resolve_basic2

   1 #!/bin/sh
   2
   3 # program
   4 # <- libb.so
   5 #
   6 # dlopen():
   7 # liba.so
   8 #
   9 # Expected: Undefined symbol in liba.so resolves to symbol in libb.so.
  10
  11
  12 . ./test_setup
  13
  14
  15 # create liba.so
  16 cat > liba.c << EOI
  17 extern int b();
  18 int a() { return b(); }
  19 EOI
  20
  21 # build
  22 compile_lib -o liba.so liba.c
  23
  24
  25 # create libb.so
  26 cat > libb.c << EOI
  27 int b() { return 1; }
  28 EOI
  29
  30 # build
  31 compile_lib -o libb.so libb.c
  32
  33
  34 # create program
  35 cat > program.c << EOI
  36 #include <dlfcn.h>
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39
  40 int
  41 main()
  42 {
  43         void* liba;
  44         int (*a)();
  45
  46         liba = dlopen("./liba.so", RTLD_NOW | RTLD_GLOBAL);
  47         if (liba == NULL) {
  48                 fprintf(stderr, "Error opening liba.so: %s\n", dlerror());
  49                 exit(117);
  50         }
  51
  52         a = (int (*)())dlsym(liba, "a");
  53         if (a == NULL) {
  54                 fprintf(stderr, "Error getting symbol a: %s\n", dlerror());
  55                 exit(116);
  56         }
  57
  58         return a();
  59 }
  60 EOI
  61
  62 # build
  63 compile_program_dl -o program program.c ./libb.so
  64
  65 # run
  66 test_run_ok ./program 1
  67