From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-return-198751-listarch-gcc=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 34981 invoked by alias); 7 Apr 2019 09:09:57 -0000
Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc/>
List-Post: <mailto:gcc@gcc.gnu.org>
List-Help: <http://gcc.gnu.org/ml/>
Sender: gcc-owner@gcc.gnu.org
Received: (qmail 34971 invoked by uid 89); 7 Apr 2019 09:09:57 -0000
Authentication-Results: sourceware.org; auth=none
X-Spam-SWARE-Status: =?ISO-8859-1?Q?No, score=-1.6 required=5.0 tests=BAYES_00,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=no version=3.3.1 spammy=HX-Received:Sun, robust, int=e2, figured?=
X-HELO: mail-wm1-f54.google.com
Received: from mail-wm1-f54.google.com (HELO mail-wm1-f54.google.com) (209.85.128.54) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Sun, 07 Apr 2019 09:09:55 +0000
Received: by mail-wm1-f54.google.com with SMTP id z11so11025441wmi.0        for <gcc@gcc.gnu.org>; Sun, 07 Apr 2019 02:09:55 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;        d=gmail.com; s=20161025;        h=mime-version:from:date:message-id:subject:to;        bh=y3G+CykVNGBIv3yvbVH9IDRmUJg3RI1n+U9dfRqceRg=;        b=Y2Ky5+dBuPuXZPzQUTo7YALJW9lmiG4jYRtpZ7rudqIM4ADrbTuls3/n6h0bUdd5lj         7UNKxmSE64ZoVqsI2ISj7lxw9ate0VwaPnbLgf8tbGT5vhLkYaZ5Qi9J46kkb79CiFqP         OBJROcZvVFM1XmrywjmmGcBkbjioFqF0qCQZv4htusK/+dm2F7i+puZrR+guspoA9xWh         INCbcCWHUp5VEOBzWesSaj8DcS6SoTUkO5XhSlfoPNMea9EnZEfkX+fczRFr0i09Igql         mjF+rDZkFEu6Ay7a2e2RK4hlI73OKteVF9gP8SUchwcKJOoRHNX66kVN5Jzs2vMQy27M         NkeA==
MIME-Version: 1.0
From: ashwina kumar <kumarashwina31@gmail.com>
Date: Sun, 07 Apr 2019 09:09:00 -0000
Message-ID: <CAC8BK_bqca2vwBLFkiShELx64v-KByjPizBiy7iO5JsycBSQhA@mail.gmail.com>
Subject: GSOC
To: gcc@gcc.gnu.org
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-SW-Source: 2019-04/txt/msg00096.txt.bz2

Hi ,

While working I just figured out that -Wconversion is buggy. Please see the
below code- -

$ cat b.c
#include <stdint.h>

void main (void)
{
        //contains build errors
        uint16_t x =3D 1;
        uint16_t y =3D 2;
        y +=3D x;  /* contains error */

}

$ gcc b.c -Wconversion
b.c: In function =E2=80=98main=E2=80=99:
b.c:22:7: warning: conversion to =E2=80=98uint16_t {aka short unsigned int}=
=E2=80=99
from =E2=80=98int=E2=80=99 may alter its value [-Wconversion]
  y +=3D x;  /* contains error */

Please help me to know as an GSOC student can I work on this for this year
to make -Wconversion more robust.

Thanks & Regards,
Ashwina

--=20
Ashwina Kumar
BIT Mesra