testing/test-cases/NSLookupSymbolInImage-basic.dtest/main.c

   1 // BUILD(macos):  $CC main.c            -o $BUILD_DIR/NSLookupSymbolInImage-basic.exe -Wno-deprecated-declarations
   2
   3 // BUILD(ios,tvos,watchos,bridgeos):
   4
   5 // RUN:  ./NSLookupSymbolInImage-basic.exe
   6
   7
   8 #include <stdio.h>
   9 #include <string.h>
  10 #include <dlfcn.h>
  11 #include <mach-o/dyld.h>
  12
  13 #include "test_support.h"
  14
  15 extern struct mach_header __dso_handle;
  16
  17 int main(int argc, const char* argv[], const char* envp[], const char* apple[]) {
  18     // verify known symbol works
  19     NSSymbol sym = NSLookupSymbolInImage(&__dso_handle, "_main", NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
  20     if ( sym == NULL ) {
  21          FAIL("Did not find symnbol _main");
  22     }
  23
  24     // verify mode where NSLookupSymbolInImage() returns NULL if symbol not found
  25     sym = NSLookupSymbolInImage(&__dso_handle, "_42hhg", NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
  26     if ( sym != NULL ) {
  27          FAIL("Did not find symnbol _42hhg");
  28     }
  29
  30     // Note: NSLookupSymbolInImage is documented to abort if symbol not found and NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR not used,
  31     // but dyld 2 just returned NULL, so no need to test that.
  32
  33     PASS("Success");
  34 }
  35