commit 21a8675b028fc03b840b3d35a78b9658e854c985
from: Sergey Bronnikov <sergeyb@tarantool.org>
date: Wed Jan 31 08:41:55 2024 UTC

test/fuzz: fix a group of errors related to `for`

Running of automatically generated Lua programs sometimes failed
with an errors like:

- "'for' initial value must be a" (12%)
- "'for' limit must be a" (4.5%)
- "'for' step must be a" (0.4%)

The patch fixes these errors.

NO_CHANGELOG=testing
NO_DOC=testing
NO_TEST=testing

commit - 8e8866f786c55049f5b74fbe5d63feaa481061c0
commit + 21a8675b028fc03b840b3d35a78b9658e854c985
blob - 003658e7a8ce2f9b1f539c44e317c12de83b3dc3
blob + 02e0a1442a5e7f1a76a2c90b790498f3cdf8388b
--- test/fuzz/luaL_loadbuffer/serializer.cc
+++ test/fuzz/luaL_loadbuffer/serializer.cc
@@ -26,6 +26,7 @@ namespace luajit_fuzzer {
 namespace {
 
 const std::string kCounterNamePrefix = "counter_";
+const std::string kNumberWrapperName = "always_number";
 
 PROTO_TOSTRING(Block, block);
 PROTO_TOSTRING(Chunk, chunk);
@@ -115,6 +116,18 @@ PROTO_TOSTRING(UnaryOperator, op);
 /** Identifier (Name). */
 PROTO_TOSTRING(Name, name);
 
+std::string
+NumberWrappedExpressionToString(const Expression &expr)
+{
+	std::string retval;
+	retval += kNumberWrapperName;
+	retval += "(";
+	retval += ExpressionToString(expr);
+	retval += ")";
+
+	return retval;
+}
+
 /**
  * Class that controls id creation for counters. Basically, a
  * variable wrapper that guarantees variable to be incremented.
@@ -695,12 +708,14 @@ PROTO_TOSTRING(ForCycleName, forcyclename)
 	std::string forcyclename_str = "for ";
 	forcyclename_str += NameToString(forcyclename.name());
 	forcyclename_str += " = ";
-	forcyclename_str += ExpressionToString(forcyclename.startexp());
+	forcyclename_str += NumberWrappedExpressionToString(
+		forcyclename.startexp());
 	forcyclename_str += ", ";
-	forcyclename_str += ExpressionToString(forcyclename.stopexp());
+	forcyclename_str += NumberWrappedExpressionToString(
+		forcyclename.stopexp());
 
 	if (forcyclename.has_stepexp())
-		forcyclename_str += ", " + ExpressionToString(
+		forcyclename_str += ", " + NumberWrappedExpressionToString(
 			forcyclename.stepexp());
 
 	forcyclename_str += " ";