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# 05470408 24-Jun-2020 Zequan Wu <zequanwu@google.com>

[SemaCXX] Fix false positive of -Wuninitialized-const-reference in empty function body.

Summary:
Some libraries use empty function to ignore unused variable warnings, which gets a new warning from `

[SemaCXX] Fix false positive of -Wuninitialized-const-reference in empty function body.

Summary:
Some libraries use empty function to ignore unused variable warnings, which gets a new warning from `-Wuninitialized-const-reference`, discussed here https://reviews.llvm.org/D79895#2107604.
This patch should fix that.

Reviewers: hans, nick, aaron.ballman

Reviewed By: aaron.ballman

Subscribers: aaron.ballman, riccibruno, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D82425

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# 7096e04a 02-Jun-2020 Fangrui Song <maskray@google.com>

[Sema] Use isAlwaysUninit for -Wuninitialized-const-reference after D79895


# 170b6869 02-Jun-2020 Zequan Wu <zequanwu@google.com>

[Clang] Add a new warning to warn when passing uninitialized variables as const reference parameters to a function

Summary:
Add a new warning -Wuninitialized-const-reference as a subgroup of -Wunini

[Clang] Add a new warning to warn when passing uninitialized variables as const reference parameters to a function

Summary:
Add a new warning -Wuninitialized-const-reference as a subgroup of -Wuninitialized to address a bug filed here: https://bugs.llvm.org/show_bug.cgi?id=45624

This warning is controlled by -Wuninitialized and can be disabled by -Wno-uninitialized-const-reference.
The warning is diagnosed when passing uninitialized variables as const reference parameters to a function.

Differential Revision: https://reviews.llvm.org/D79895

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