$cat gcc-wrap.c
#include <stdint.h>
#include <stdio.h>
int main()
{
uint32_t a = 1 << 17;
uint16_t b = a;
printf("a: %u, b: %u\n", (unsigned)a, (unsigned)b);
return 0;
}
$gcc -Wall -Wextra -Wconversion -pedantic gcc-wrap.c
no warrnings
$gcc --version
gcc (GCC) 4.1.1
for example:
$icc --version
iccbin (ICC) 9.1 20060706
$icc -Wall gcc-wrap.c
gcc-wrap.c(7): remark #810: conversion from "uint32_t={unsigned int}" to
"uint16_t={unsigned short}" may lose significant bits
uint16_t b = a;
^
--
Summary: uint32_t -> uint16_t without warrnings
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dushistov at mail dot ru
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30695
