testing/test-cases/dylib-static-weak-link.dtest/present.c

   1 // BUILD:  $CC foo.c -dynamiclib -o $BUILD_DIR/libfoo.dylib -install_name libfoo.dylib
   2 // BUILD:  $CC present.c $BUILD_DIR/libfoo.dylib -o $BUILD_DIR/dylib-static-weak-present.exe
   3 // BUILD:  $CC foo.c -dynamiclib -o $TEMP_DIR/libfoo2.dylib -install_name libfoomissing.dylib
   4 // BUILD:  $CC missing.c $TEMP_DIR/libfoo2.dylib -o $BUILD_DIR/dylib-static-weak-missing.exe
   5
   6 // RUN:  ./dylib-static-weak-present.exe
   7 // RUN:  ./dylib-static-weak-missing.exe
   8
   9
  10 #include <stddef.h>
  11 #include <stdio.h>
  12
  13 extern int foo __attribute__((weak_import));
  14
  15
  16 int main()
  17 {
  18     printf("[BEGIN] dylib-static-weak-link present\n");
  19     // dylib will be found at runtime, so &foo should never be NULL
  20     if ( &foo != NULL ) {
  21        if ( foo == 42 )
  22             printf("[PASS] dylib-static-weak-link present\n");
  23         else
  24             printf("[FAIL] dylib-static-weak-link present, wrong value\n");
  25     }
  26     else {
  27         printf("[FAIL] dylib-static-weak-link present, &foo == NULL\n");
  28     }
  29
  30         return 0;
  31 }
  32
  33