Hello,
In this example:
#include<stdlib.h>
#include<string.h>
int main() {
strspn("hello","h");
return 0;
}
I obtain a warning as:
test.c:4:5: warning: conversion to ‘size_t’ from ‘int’ may change the
sign of the result
If I compile the program with the options:
gcc -Wconversion -O test.c -o test
The warning appears with -O, -O1, -O2 and -O3, but not with -O0. The
warning appears in gcc 4.5 and 4.6 but not in previous releases.
I'm using:
For gcc 4.5 series:
Debian GNU/Linux Sid
gcc 4.5.2 from Debian repos
Pentium M, 1.3 GHz
For gcc 4.6 series:
Red Hat Enterprise Linux 5
gcc 4.6.0 20110115 compiled by hand from http://gcc.gnu.org/
Intel Xeon X5650 2.67 GHz
--
*****************************************
José Luis García Pallero
jgpallero@xxxxxxxxx
(o<
/ / \
V_/_
Use Debian GNU/Linux and enjoy!
*****************************************
