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Implicit conversion loses integer precision in x86_64
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Implicit conversion loses integer precision in x86_64


  • Subject: Implicit conversion loses integer precision in x86_64
  • From: Carl Hoefs <email@hidden>
  • Date: Fri, 12 Sep 2014 18:17:49 -0700

OS X 10.9.4, Xcode 5.1.1

For my OS X app, for both Project & Target I'm building with:

Architectures                    "Standard Architectures (64-bit Intel) (x86_64)'.
Build Active Architecture Only   YES
Supported Platforms              OS X
Valid Architectures              x64_64

However Xcode complains about the following:

        unsigned long myvalue = 16;
        unsigned int urvalue = myvalue; <—= WARNING

"Implicit conversion loses integer precision: 'unsigned long' to 'uint32_t (aka 'unsigned int')"

Aren't 'unsigned long' and 'unsigned int' identical 32-bit quantities in x86_64?
-Carl


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