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Re: [PATCH] ssize_t: fix definition on mingw
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From: |
Bruno Haible |
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Subject: |
Re: [PATCH] ssize_t: fix definition on mingw |
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Date: |
Thu, 05 Apr 2012 14:40:01 +0200 |
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User-agent: |
KMail/4.7.4 (Linux/3.1.0-1.2-desktop; KDE/4.7.4; x86_64; ; ) |
Eric Blake wrote:
> Then how do I explain the compiler
> warning that Daniel was seeing under mingw64?
They come from disagreements regarding the "integer conversion rank" of
'size_t' and 'ssize_t' between GCC and <sys/types.h>.
When you write printf("%zd",arg) then GCC compares its own built-in knowledge
about 'ssize_t' being 'int' or 'long' with the type of the argument 'arg'.
It reports mismatch between 'int' and 'long' also on 32-bit platforms
(possibly with the intent of helping portability to 64-bit platforms).
Bruno