topic Re: HCS12 compiler does not throw an error for function arguments number mismatch in declaration and definition in CodeWarrior Development Tools

HCS12 compiler does not throw an error for function arguments number mismatch in declaration and definition

surabikrishnamu — Mon, 27 Mar 2017 05:44:26 GMT

A function is declared with 2 arguments, but the definition has only 1 argument

The HCS12 compiler does not throw an error or warning

CodeWarrior IDE version 5.9.0 build 5294

Re: HCS12 compiler does not throw an error for function arguments number mismatch in declaration and definition

ZhangJennie — Thu, 06 Apr 2017 06:26:16 GMT

Hello,

can you please send me a demo project of this problem?

Thanks!

Have a great day,
Jennie Zhang

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Re: HCS12 compiler does not throw an error for function arguments number mismatch in declaration and definition

surabikrishnamu — Thu, 06 Apr 2017 09:56:48 GMT

Re: HCS12 compiler does not throw an error for function arguments number mismatch in declaration and definition

surabikrishnamu — Thu, 06 Apr 2017 10:00:17 GMT

I have a main.c file which calls the function add

The function add is declared in add.h and defined in add.c

I have added all these files in the project

I don't get an error when I compile the project

Re: HCS12 compiler does not throw an error for function arguments number mismatch in declaration and definition

surabikrishnamu — Fri, 07 Apr 2017 02:52:17 GMT

Hi Alice,

The declaration in add.h has 2 arguments

The definition in add.c has just 1 argument

When I call the function in main.c, I am passing 2 arguments which would result in error

I was expecting an error or warning "wrong number of arguments"

Re: HCS12 compiler does not throw an error for function arguments number mismatch in declaration and definition

BlackNight — Fri, 07 Apr 2017 07:03:34 GMT

Hi Surabi,

I have to disagree that this is a compiler bug/error. You are missing to include

#include "add.h"

inside add.c.

According to the C language, the compiler won't be able (and shall not) produce an error for this. The linker has no chance to detect this neither. If you want to catch something like this, you would have to compile your sources in C++ mode.

I hope this helps,

Erich

Re: HCS12 compiler does not throw an error for function arguments number mismatch in declaration and definition

surabikrishnamu — Mon, 10 Apr 2017 04:04:43 GMT

Hi Erich,

Thank you for the reply

Enabling C++ in Compiler options does detect this

Thanks

Surabi