Re: uninitilized variables with -O1

To: current-users%netbsd.org@localhost
Subject: Re: uninitilized variables with -O1
From: christos%astron.com@localhost (Christos Zoulas)
Date: Tue, 8 Apr 2014 15:40:16 +0000 (UTC)

>Am 08.04.2014 05:18, schrieb Takahiro HAYASHI:
> gcc points out two uninitialized variables while building current
> amd64 kernel with makeoptions COPTS="-O1 -fno-omit-frame-pointer",
> but does not complain about these with "-O2 -fno-omit-frame-pointer".

I am all for code improvements and simplifications, but please
don't start fixing uninitialized warnings with different optimization
flag combinations because the compiler does not always evaluate
the define-use paths properly, leading to spurious warnings that
can only be fixed with overinitialization, which is a problem in
itself.

christos

References:
- uninitilized variables with -O1
  - From: Takahiro HAYASHI
- Re: uninitilized variables with -O1
  - From: henning petersen

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