testing/test-cases/_dyld_get_objc_selector-shared-cache.dtest/main.c

   1
   2 // BUILD:  $CC main.c -o $BUILD_DIR/_dyld_get_objc_selector-shared-cache.exe
   3
   4 // RUN:  ./_dyld_get_objc_selector-shared-cache.exe
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <dlfcn.h>
   9 #include <mach-o/dyld.h>
  10 #include <mach-o/dyld_priv.h>
  11
  12
  13 int main()
  14 {
  15     printf("[BEGIN] _dyld_get_objc_selector-shared-cache\n");
  16
  17     size_t cacheLen;
  18     uintptr_t cacheStart = (uintptr_t)_dyld_get_shared_cache_range(&cacheLen);
  19
  20     const char* selName = _dyld_get_objc_selector("retain");
  21
  22     if ( cacheStart != 0 ) {
  23         // We have a shared cache, so the selector should be there
  24         if ( selName == NULL ) {
  25             printf("[FAIL] _dyld_get_objc_selector() returned null for selector in shared cache\n");
  26             return 0;
  27         }
  28
  29         if ( ((uintptr_t)selName < cacheStart) || ((uintptr_t)selName >= (cacheStart + cacheLen)) ) {
  30             printf("[FAIL] _dyld_get_objc_selector() pointer outside of shared cache range\n");
  31             return 0;
  32         }
  33     } else {
  34         // No shared cache, so the selector should not be found.
  35         // FIXME: This assumption may be false once the selectors are in the closure.
  36         if ( selName != NULL ) {
  37             printf("[FAIL] _dyld_get_objc_selector() returned non-null for selector without shared cache\n");
  38             return 0;
  39         }
  40     }
  41
  42     printf("[PASS] _dyld_get_objc_selector-shared-cache\n");
  43     return 0;
  44 }
  45