suppress undefined checks

Author: danielsn

.cbmc-batch/jobs/aws_hash_c_string/aws_hash_c_string_harness.c

@@ -20,7 +20,7 @@
 #include <proof_helpers/utils.h>
 
 void aws_hash_c_string_harness() {
-  const char* str = make_arbitrary_c_str(MAX_STRING_SIZE);
-  /* This function has no pre or post conditions */
-  uint64_t rval = aws_hash_c_string(str);
+    const char *str = make_arbitrary_c_str(MAX_STRING_SIZE);
+    /* This function has no pre or post conditions */
+    uint64_t rval = aws_hash_c_string(str);
 }

.cbmc-batch/jobs/aws_hash_ptr/aws_hash_ptr_harness.c

@@ -23,7 +23,7 @@
  * Runtime: 4.5s
  */
 void aws_hash_ptr_harness() {
-  void* ptr;
-  /* This function has no pre or post conditions */
-  uint64_t rval = aws_hash_ptr(ptr);
+    void *ptr;
+    /* This function has no pre or post conditions */
+    uint64_t rval = aws_hash_ptr(ptr);
 }

include/aws/common/private/lookup3.c

@@ -58,6 +58,11 @@ on 1 byte), but shoehorning those bytes into integers efficiently is messy.
 #pragma warning(disable:4127) /*Disable "conditional expression is constant" */
 #endif /* _MSC_VER */
 
+#ifdef CBMC
+#    pragma CPROVER check push
+#    pragma CPROVER check disable "unsigned-overflow"
+#endif /* CBMC */
+
 /*
  * My best guess at if you are big-endian or little-endian.  This may
  * need adjustment.
@@ -1017,3 +1022,7 @@ int main()
 #if _MSC_VER
 #pragma warning(pop)
 #endif /* _MSC_VER */
+
+#ifdef CBMC
+#    pragma CPROVER check pop
+#endif /* CBMC */