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buildroot/buildroot-2016.08.1/package/audiofile/0002-cast-to-unsigned-gcc6.patch 1.15 KB
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  From 28cfdbbcb96a69087c3d21faf69b5eae7bcf6d69 Mon Sep 17 00:00:00 2001
  From: Hodorgasm <nsane457@gmail.com>
  Date: Wed, 11 May 2016 21:42:07 -0400
  Subject: [PATCH] Cast to unsigned while left bit-shifting
  
  GCC-6 now treats the left bitwise-shift of a negative integer as nonconformant so explicitly cast to an unsigned int while bit-shifting.
  
  Downloaded from upstream PR:
  https://github.com/mpruett/audiofile/pull/28
  
  Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
  ---
   libaudiofile/modules/SimpleModule.h | 2 +-
   1 file changed, 1 insertion(+), 1 deletion(-)
  
  diff --git a/libaudiofile/modules/SimpleModule.h b/libaudiofile/modules/SimpleModule.h
  index 03c6c69..4014fb2 100644
  --- a/libaudiofile/modules/SimpleModule.h
  +++ b/libaudiofile/modules/SimpleModule.h
  @@ -123,7 +123,7 @@ struct signConverter
   	typedef typename IntTypes<Format>::UnsignedType UnsignedType;
   
   	static const int kScaleBits = (Format + 1) * CHAR_BIT - 1;
  -	static const int kMinSignedValue = -1 << kScaleBits;
  +	static const int kMinSignedValue = static_cast<signed>(static_cast<unsigned>(-1) << kScaleBits);;
   
   	struct signedToUnsigned : public std::unary_function<SignedType, UnsignedType>
   	{