diff --git a/compiler-rt/lib/scudo/standalone/internal_defs.h b/compiler-rt/lib/scudo/standalone/internal_defs.h
--- a/compiler-rt/lib/scudo/standalone/internal_defs.h
+++ b/compiler-rt/lib/scudo/standalone/internal_defs.h
@@ -133,25 +133,25 @@
 #else
 #define DCHECK(A)                                                              \
   do {                                                                         \
-  } while (false)
+  } while (false && A)
 #define DCHECK_EQ(A, B)                                                        \
   do {                                                                         \
-  } while (false)
+  } while (false && A == B)
 #define DCHECK_NE(A, B)                                                        \
   do {                                                                         \
-  } while (false)
+  } while (false && A != B)
 #define DCHECK_LT(A, B)                                                        \
   do {                                                                         \
-  } while (false)
+  } while (false && A < B)
 #define DCHECK_LE(A, B)                                                        \
   do {                                                                         \
-  } while (false)
+  } while (false && A <= B)
 #define DCHECK_GT(A, B)                                                        \
   do {                                                                         \
-  } while (false)
+  } while (false && A > B)
 #define DCHECK_GE(A, B)                                                        \
   do {                                                                         \
-  } while (false)
+  } while (false && A >= B)
 #endif
 
 // The superfluous die() call effectively makes this macro NORETURN.