r194540 - PR10837: Warn if a null pointer constant is formed by a zero integer constant

[Joerg Sonnenberger]

On Wed, Nov 13, 2013 at 01:24:28AM -0000, Richard Smith wrote:
> Log:
> PR10837: Warn if a null pointer constant is formed by a zero integer constant
> expression that is not a zero literal, in C. Patch by Ivan A. Kosarev!

Attached is a better test case.

Joerg
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