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[C++ Patch] PR 80896 ("[[nodiscard]] is ignored for functions returning references")

From: Paolo Carlini <paolo dot carlini at oracle dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Cc: Jason Merrill <jason at redhat dot com>
Date: Wed, 31 May 2017 14:04:31 +0200
Subject: [C++ Patch] PR 80896 ("[[nodiscard]] is ignored for functions returning references")
Authentication-results: sourceware.org; auth=none

Hi,

this one appears to be a rather simple case of missing diagnostic: inconvert_to_void we aren't calling maybe_warn_nodiscard when we strip anINDIRECT_REF wrapping a CALL_EXPR thus we don't issue the diagnosticthat we normally provide for plain CALL_EXPRs (eg, for a func returninga plain int). Tested x86_64-linux.


Thanks, Paolo.

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