[PATCH] D36231: [asan] Make dump_registers.cc more stable

[Kuba (Brecka) Mracek via Phabricator via llvm-commits]

kubamracek created this revision.
kubamracek added a project: Sanitizers.

Repository:
  rL LLVM

https://reviews.llvm.org/D36231

Files:
  test/asan/TestCases/Darwin/dump_registers.cc


Index: test/asan/TestCases/Darwin/dump_registers.cc
===================================================================
--- test/asan/TestCases/Darwin/dump_registers.cc
+++ test/asan/TestCases/Darwin/dump_registers.cc
@@ -5,22 +5,22 @@
 
 #include <assert.h>
 #include <stdio.h>
+#include <sys/mman.h>
 
 int main() {
   fprintf(stderr, "Hello\n");
   char *ptr;
 
-  if (sizeof(void *) == 8)
-    ptr = (char *)0x6666666666666666;
-  else if (sizeof(void *) == 4)
-    ptr = (char *)0x55555555;
-  else
-    assert(0 && "Your computer is weird.");
+  ptr = (char *)mmap(NULL, 0x10000, PROT_NONE, MAP_ANON | MAP_PRIVATE, -1, 0);
+  assert(ptr && "failed to mmap");
+
+  fprintf(stderr, "p = 0x%08x\n", (uintptr_t)ptr);
+  // CHECK: p = [[ADDR:0x[0-9]+]]
 
   char c = *ptr;  // BOOM
   // CHECK: ERROR: AddressSanitizer: {{SEGV|BUS}}
   // CHECK: Register values:
-  // CHECK: {{0x55555555|0x6666666666666666}}
+  // CHECK: [[ADDR]]
   fprintf(stderr, "World\n");
   return c;
 }


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