Hello, I'm trying to compile a simple program with gcc 4.4.0 in an intel Xeon machine running RHEL (I haven't any other posibility). I'm using the warning flag -Wconversion in order to check type conversions without explicit cast. When I work with data types as int and long in functions and pass the data without explicit casts the warning flag runs OK and when I do the explicit cast the warning dissapears. But when I do the same with a function that admits a single char argument, allways (with explicit cast too) the warning appears as warning: passing argument 1 of ‘printChar’ with different width due to prototype Attached I sent 4 files (three src and a Makefile) in order to reproduce the behaviour. But if I run the Makefile in my laptop (iBook ppc running Debian GNU/Linux) with gcc 4.4.4 all runs OK. The warning not appears in the case of char argument. I don't know if it is a bug of gcc 4.4.0 or a feature related to 64 bits or a bug in RHEL gcc. Can someone reproduce the behaviour? Thanks -- ***************************************** José Luis García Pallero jgpallero@xxxxxxxxx (o< / / \ V_/_ Use Debian GNU/Linux and enjoy! *****************************************
#ifndef _LIBTEST_H_
#define _LIBTEST_H_
#include<stdio.h>
#ifdef __cplusplus
extern "C" {
#endif
void printChar(const char data);
void printLong(const long data);
#ifdef __cplusplus
}
#endif
#endif
#include"libtest.h"
void printChar(const char data)
{
printf("Character is: %c\n",data);
return;
}
void printLong(const long data)
{
printf("Long data is: %ld\n",data);
return;
}
#include<stdio.h>
#include"libtest.h"
int main()
{
printf("Small test program:\n");
printChar('E');
printChar((char)'E');
printLong(1);
printLong((long)1);
return 0;
}
Attachment:
Makefile
Description: Binary data
