* gcc warn C++ implicit enum conversion
@ 2019-07-01 22:40 Jonny Grant
2019-07-02 7:47 ` Jonathan Wakely
0 siblings, 1 reply; 3+ messages in thread
From: Jonny Grant @ 2019-07-01 22:40 UTC (permalink / raw)
To: gcc-help
Hi
Is there any way to warn on enum conversion to int? I tried few options,
but no warning seems possible.
Cheers, Jonny
//-O2 -Wall -Wextra -Wconversion -Werror
#include <cstddef>
typedef enum
{
a = -1
} a_t;
a_t f()
{
return a;
}
int main()
{
int b = f();
return b;
}
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: gcc warn C++ implicit enum conversion
2019-07-01 22:40 gcc warn C++ implicit enum conversion Jonny Grant
@ 2019-07-02 7:47 ` Jonathan Wakely
2019-07-02 9:24 ` Jonny Grant
0 siblings, 1 reply; 3+ messages in thread
From: Jonathan Wakely @ 2019-07-02 7:47 UTC (permalink / raw)
To: Jonny Grant; +Cc: gcc-help
On Mon, 1 Jul 2019 at 23:40, Jonny Grant wrote:
>
> Hi
> Is there any way to warn on enum conversion to int?
I don't think so.
I'd just use 'enum class' so the conversion is forbidden, and insert
explicit casts where you want the conversion to compile.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: gcc warn C++ implicit enum conversion
2019-07-02 7:47 ` Jonathan Wakely
@ 2019-07-02 9:24 ` Jonny Grant
0 siblings, 0 replies; 3+ messages in thread
From: Jonny Grant @ 2019-07-02 9:24 UTC (permalink / raw)
To: Jonathan Wakely; +Cc: gcc-help
On 02/07/2019 08:47, Jonathan Wakely wrote:
> On Mon, 1 Jul 2019 at 23:40, Jonny Grant wrote:
>>
>> Hi
>> Is there any way to warn on enum conversion to int?
>
> I don't think so.
>
> I'd just use 'enum class' so the conversion is forbidden, and insert
> explicit casts where you want the conversion to compile.
>
Thank you. I better update codebase to use 'enum class' to get these
warnings.
Thanks, Jonny
^ permalink raw reply [flat|nested] 3+ messages in thread
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