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Re: making sizeof(void) different from sizeof(void()())

From: Andreas Schwab <schwab at linux-m68k dot org>
To: Basile Starynkevitch <basile at starynkevitch dot net>
Cc: Robert Dewar <dewar at adacore dot com>, Georg-Johann Lay <avr at gjlay dot de>, Peter Bigot <bigotp at acm dot org>, gcc at gcc dot gnu dot org
Date: Sun, 29 Apr 2012 19:38:51 +0200
Subject: Re: making sizeof(void*) different from sizeof(void(*)())
References: <CAPOJ94PbYfsHkPGQ2U02vpAiyMDP7Ksr4OajpGHeS35-iWijeQ@mail.gmail.com> <4F9D393B.4020104@gjlay.de> <4F9D3DE4.7010904@adacore.com> <m2ty02zn43.fsf@igel.home> <4F9D4566.3080302@adacore.com> <20120429184751.36cb6939d6719a392e707315@starynkevitch.net> <4F9D7164.2080202@adacore.com> <20120429191913.96d7114b6a8a8436d6202f7d@starynkevitch.net>

Basile Starynkevitch <basile@starynkevitch.net> writes:

> `dlsym` is the obvious hint

Most programs don't use dlsym.

> also simply that most (probably nearly all) Linux/ELF systems and Unix systems have same
> size for data and function pointers.

Those that don't use function descriptors.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

References:
- making sizeof(void*) different from sizeof(void(*)())
  - From: Peter Bigot
- Re: making sizeof(void*) different from sizeof(void(*)())
  - From: Georg-Johann Lay
- Re: making sizeof(void*) different from sizeof(void(*)())
  - From: Robert Dewar
- Re: making sizeof(void*) different from sizeof(void(*)())
  - From: Andreas Schwab
- Re: making sizeof(void*) different from sizeof(void(*)())
  - From: Robert Dewar
- Re: making sizeof(void*) different from sizeof(void(*)())
  - From: Basile Starynkevitch
- Re: making sizeof(void*) different from sizeof(void(*)())
  - From: Robert Dewar
- Re: making sizeof(void*) different from sizeof(void(*)())
  - From: Basile Starynkevitch

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Re: making sizeof(void*) different from sizeof(void(*)())

Re: making sizeof(void) different from sizeof(void()())