• Hiroshi Ioka's avatar
    cmd/cgo: support large unsigned macros · 7555a45d
    Hiroshi Ioka authored
    Currently, cgo converts integer macros into int64 if it's possible.
    As a result, some macros which satisfy
    
    math.MaxInt64 < x <= math.MaxUint64
    
    will lose their original values.
    
    This CL introduces the new probe to check signs,
    so we can handle signed ints and unsigned ints separately.
    
    Fixes #20369
    
    Change-Id: I002ba452a82514b3a87440960473676f842cc9ee
    Reviewed-on: https://go-review.googlesource.com/43476Reviewed-by: 's avatarIan Lance Taylor <iant@golang.org>
    Run-TryBot: Ian Lance Taylor <iant@golang.org>
    TryBot-Result: Gobot Gobot <gobot@golang.org>
    7555a45d
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