Method test_dlfcn_longjmp

test/test_core.py:3603–3658

(self)

  @needs_dylink
  def test_dlfcn_longjmp(self):
    create_file('libside.c', r'''
      #include <setjmp.h>
      #include <stdio.h>

      void jumpy(jmp_buf buf) {
        static int i = 0;
        i++;
        if (i == 10) longjmp(buf, i);
        printf("pre %d\n", i);
      }
      ''&#x27;)
    self.build_dlfcn_lib('libside.c')

    self.prep_dlfcn_main()
    create_file('main.c', r''&#x27;
      #include <assert.h>
      #include <stdio.h>
      #include <dlfcn.h>
      #include <setjmp.h>

      typedef void (*jumpfunc)(jmp_buf);

      int main() {
        printf("go!\n");

        void *lib_handle;
        lib_handle = dlopen("libside.so", RTLD_NOW);
        assert(lib_handle != NULL);

        jumpfunc jumpy = (jumpfunc)dlsym(lib_handle, "jumpy");
        assert(jumpy);

        jmp_buf buf;
        int jmpval = setjmp(buf);
        if (jmpval == 0) {
          while (1) jumpy(buf);
        } else {
          printf("out!\n");
        }

        return 0;
      }
      ''&#x27;)
    self.do_runf('main.c', ''&#x27;go!
pre 1
pre 2
pre 3
pre 4
pre 5
pre 6
pre 7
pre 8
pre 9
out!
''&#x27;)

  @needs_dylink