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From: Russell Shaw <rjshaw@netspace.net.au>
To: gdb@sourceware.org, Andreas Schwab <schwab@linux-m68k.org>
Subject: Re: sizeof
Date: Wed, 11 May 2022 18:16:18 +1000	[thread overview]
Message-ID: <c3358713-5f0c-0231-b252-56c8cae8f421@netspace.net.au> (raw)
In-Reply-To: <f17788ef-8e2b-50f4-bbe4-ffb71b472161@netspace.net.au>

int bar() {
     return 0;
}

template<class T = int()> void foo()
{
     T p = bar;
}

int
main(int argc, char *argv[])
{
     foo();
}

g++ ...
main.cpp: In instantiation of ‘void foo() [with T = int()]’:
main.cpp:13:9:   required from here
main.cpp:7:7: error: variable ‘p’ has function type
     7 |     T p = bar;
       |       ^
***************************************************

If the "int()" type-id decayed to "int(*)()", this would work.

"sizeof(int()) => 1" just seems wrong, but maybe it's a matter of taste that has 
been explicitly decided.

  reply	other threads:[~2022-05-11  8:16 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-08 15:22 sizeof Russell Shaw
2022-05-08 17:29 ` sizeof Simon Marchi
2022-05-08 17:48   ` sizeof Andreas Schwab
2022-05-09  7:21   ` sizeof Russell Shaw
2022-05-09  7:35     ` sizeof Andreas Schwab
2022-05-10  3:46     ` sizeof Russell Shaw
2022-05-10  7:22       ` sizeof Andreas Schwab
2022-05-10 14:20         ` sizeof Russell Shaw
2022-05-10 14:48           ` sizeof Andreas Schwab
2022-05-10 15:43           ` sizeof Russell Shaw
2022-05-10 15:48           ` sizeof Russell Shaw
2022-05-10 16:06             ` sizeof Andreas Schwab
2022-05-11  5:38             ` sizeof Russell Shaw
2022-05-11  8:16               ` Russell Shaw [this message]
2022-05-11 17:44                 ` sizeof Russell Shaw

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