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  • Johannes Schindelin's avatar
    Really work around "uninitialized value" warning · 5994bd82
    Johannes Schindelin authored
    Ever since 457f08a0 (git-rev-list: add --bisect-vars option.,
    2007-03-21), Git's source code uses the following trick to fool GCC into
    *not* warning about uninitialized values:
    
    	int value = value;
    
    We use this trick to silence the "warning: ‘x’ is used uninitialized in
    this function [-Wuninitialized]" when the variables are not really used
    uninitialized (but it is hard for the compiler to determine that).
    
    This trick works well for GCC, and even Clang seems to appease that
    workaround.
    
    Not so Visual C. It does realize that this is just a trick to fool it,
    and it simply refuses to be fooled.
    
    The only way to silence the warning for Visual C would be to write
    something like this:
    
    	#pragma warning(suppress: 4700)
    	int value;
    
    Obviously this is not portable, and neither is that trick that fools
    GCC. So let's just introduce a new macro that continues to fool GCC, but
    simply initializes the values everywhere else.
    Signed-off-by: Johannes Schindelin's avatarJohannes Schindelin <johannes.schindelin@gmx.de>
    5994bd82
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