Codechange: Add WARN_FORMAT to vseprintf and fix the cascade of warnings that followed

src/3rdparty/squirrel/squirrel/sqcompiler.cpp

@@ -65,9 +65,9 @@ public:
 	}
 	NORETURN static void ThrowError(void *ud, const SQChar *s) {
 		SQCompiler *c = (SQCompiler *)ud;
-		c->Error(s);
+		c->Error("%s", s);
 	}
-	NORETURN void Error(const SQChar *s, ...)
+	NORETURN void Error(const SQChar *s, ...) WARN_FORMAT(2, 3)
 	{
 		static SQChar temp[256];
 		va_list vl;
@@ -122,7 +122,7 @@ public:
 					}
 					Error("expected '%s'", etypename);
 				}
-				Error("expected '%c'", tok);
+				Error("expected '%c'", (char)tok);
 			}
 		}
 		SQObjectPtr ret;

src/3rdparty/squirrel/squirrel/sqvm.cpp

@@ -94,7 +94,7 @@ bool SQVM::ARITH_OP(SQUnsignedInteger op,SQObjectPtr &trg,const SQObjectPtr &o1,
 					if(!StringCat(o1, o2, trg)) return false;
 			}
 			else if(!ArithMetaMethod(op,o1,o2,trg)) {
-				Raise_Error("arith op %c on between '%s' and '%s'",op,GetTypeName(o1),GetTypeName(o2)); return false;
+				Raise_Error("arith op %c on between '%s' and '%s'",(char)op,GetTypeName(o1),GetTypeName(o2)); return false;
 			}
 		}
 		return true;

src/3rdparty/squirrel/squirrel/sqvm.h

@@ -81,7 +81,7 @@ public:
 	SQString *PrintObjVal(const SQObject &o);
 
 
-	void Raise_Error(const SQChar *s, ...);
+	void Raise_Error(const SQChar *s, ...) WARN_FORMAT(2, 3);
 	void Raise_Error(SQObjectPtr &desc);
 	void Raise_IdxError(const SQObject &o);
 	void Raise_CompareError(const SQObject &o1, const SQObject &o2);

src/misc/str.hpp

@@ -90,7 +90,7 @@ struct CStrA : public CBlobT<char>
 	}
 
 	/** Add formatted string (like vsprintf) at the end of existing contents. */
-	int AddFormatL(const char *format, va_list args)
+	int AddFormatL(const char *format, va_list args) WARN_FORMAT(2, 0)
 	{
 		size_t addSize = max<size_t>(strlen(format), 16);
 		addSize += addSize / 2;

src/saveload/saveload.h

@@ -896,7 +896,7 @@ void SlObject(void *object, const SaveLoad *sld);
 bool SlObjectMember(void *object, const SaveLoad *sld);
 void NORETURN SlError(StringID string, const char *extra_msg = nullptr);
 void NORETURN SlErrorCorrupt(const char *msg);
-void NORETURN SlErrorCorruptFmt(const char *format, ...);
+void NORETURN SlErrorCorruptFmt(const char *format, ...) WARN_FORMAT(1, 2);
 
 bool SaveloadCrashWithMissingNewGRFs();
 

src/script/squirrel.hpp

@@ -63,12 +63,12 @@ protected:
 	/**
 	 * If a user runs 'print' inside a script, this function gets the params.
 	 */
-	static void PrintFunc(HSQUIRRELVM vm, const SQChar *s, ...);
+	static void PrintFunc(HSQUIRRELVM vm, const SQChar *s, ...) WARN_FORMAT(2, 3);
 
 	/**
 	 * If an error has to be print, this function is called.
 	 */
-	static void ErrorPrintFunc(HSQUIRRELVM vm, const SQChar *s, ...);
+	static void ErrorPrintFunc(HSQUIRRELVM vm, const SQChar *s, ...) WARN_FORMAT(2, 3);
 
 public:
 	Squirrel(const char *APIName);

src/string_func.h

@@ -35,7 +35,7 @@ char *strecpy(char *dst, const char *src, const char *last);
 char *stredup(const char *src, const char *last = nullptr);
 
 int CDECL seprintf(char *str, const char *last, const char *format, ...) WARN_FORMAT(3, 4);
-int CDECL vseprintf(char *str, const char *last, const char *format, va_list ap);
+int CDECL vseprintf(char *str, const char *last, const char *format, va_list ap) WARN_FORMAT(3, 0);
 
 char *CDECL str_fmt(const char *str, ...) WARN_FORMAT(1, 2);