avoid int overflow too

audiofile-0.3.6-left-shift-neg.patch

@@ -6,7 +6,7 @@ diff -Nurb --strip-trailing-cr audiofile-0.3.6-orig/libaudiofile/modules/SimpleM
  
  	static const int kScaleBits = (Format + 1) * CHAR_BIT - 1;
 -	static const int kMinSignedValue = -1 << kScaleBits;
-+	static const int kMinSignedValue = 0L-(1<<kScaleBits);
++	static const int kMinSignedValue = 0-(1U<<kScaleBits);
  
  	struct signedToUnsigned : public std::unary_function<SignedType, UnsignedType>
  	{
@@ -18,7 +18,7 @@ diff -Nurb --strip-trailing-cr audiofile-0.3.6-orig/test/FloatToInt.cpp audiofil
  }
  
 -static const int32_t kMinInt24 = -1<<23;
-+static const int32_t kMinInt24 = 0L-(1<<23);
++static const int32_t kMinInt24 = 0-(1U<<23);
  static const int32_t kMaxInt24 = (1<<23) - 1;
  
  TEST_F(FloatToIntTest, Int24)
@@ -30,7 +30,7 @@ diff -Nurb --strip-trailing-cr audiofile-0.3.6-orig/test/IntToFloat.cpp audiofil
  }
  
 -static const int32_t kMinInt24 = -1<<23;
-+static const int32_t kMinInt24 = 0L-(1<<23);
++static const int32_t kMinInt24 = 0-(1U<<23);
  static const int32_t kMaxInt24 = (1<<23) - 1;
  
  TEST_F(IntToFloatTest, Int24)
@@ -42,7 +42,7 @@ diff -Nurb --strip-trailing-cr audiofile-0.3.6-orig/test/Sign.cpp audiofile-0.3.
  }
  
 -static const int32_t kMinInt24 = -1<<23;
-+static const int32_t kMinInt24 = 0L-(1<<23);
++static const int32_t kMinInt24 = 0-(1U<<23);
  static const int32_t kMaxInt24 = (1<<23) - 1;
  static const uint32_t kMaxUInt24 = (1<<24) - 1;