From: Yubin Ruan <ablacktshirt@gmail.com>
To: gcc-help@gcc.gnu.org
Subject: gcc warning about return value truncation
Date: Sun, 29 Dec 2019 05:12:00 -0000 [thread overview]
Message-ID: <CAJYFCiO_ZGzifxLffJeAKcF1ywMmf03zDJTC569TRU8c=HKKrQ@mail.gmail.com> (raw)
Is there any gcc flag to warn about this?
#include <iostream>
#include <cstdint>
int16_t func() {
int32_t num = INT32_MAX;
std::cout << "func() called " << num << std::endl;
return num;
}
int main()
{
int32_t val = func();
std::cout << "return value is " << val << std::endl;
}
The return value of func() was truncated because the return type is
accidentally written as int16_t
Thanks,
Yubin
next reply other threads:[~2019-12-29 5:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-29 5:12 Yubin Ruan [this message]
2019-12-29 6:28 ` Liu Hao
2020-01-02 5:37 ` Yubin Ruan
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