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Re: C PATCH to fix ICE with -Wdouble-promotion (PR c/79515)

From: Bernd Schmidt <bschmidt at redhat dot com>
To: Marek Polacek <polacek at redhat dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>, Joseph Myers <joseph at codesourcery dot com>
Date: Wed, 15 Feb 2017 16:32:15 +0100
Subject: Re: C PATCH to fix ICE with -Wdouble-promotion (PR c/79515)
Authentication-results: sourceware.org; auth=none
References: <20170215114939.GC13736@redhat.com>

On 02/15/2017 12:49 PM, Marek Polacek wrote:

We ICEd on this testcase in do_warn_double_promotion because an invalid
conversion had produced an error result type and accessing that via
TYPE_MAIN_VARIANT crashes.  Fixed in an obvious way.

Bootstrapped/regtested on x86_64-linux, ok for trunk?

2017-02-15  Marek Polacek  <polacek@redhat.com>

	PR c/79515
	* c-warn.c (do_warn_double_promotion): Don't warn if an invalid
	conversion has occured.

	* gcc.dg/dfp/pr79515.c: New.


Ok.


Bernd

References:
- C PATCH to fix ICE with -Wdouble-promotion (PR c/79515)
  - From: Marek Polacek

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