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Re: AC_TYPE_UINT64_T produces wrong result with GCC 3.4.4 on Tru64 UNIX


From: Paolo Bonzini
Subject: Re: AC_TYPE_UINT64_T produces wrong result with GCC 3.4.4 on Tru64 UNIX V4.0F
Date: Tue, 20 Oct 2009 19:33:37 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20091014 Fedora/3.0-2.8.b4.fc11 Lightning/1.0pre Thunderbird/3.0b4

On 10/20/2009 04:50 PM, Eric Blake wrote:
An alternate patch would have been reordering the shell for loop to test long
long, long, then int; that way, the checks are ordered widest to narrowest.
But that has the potential for API changes if the macro selects a different
type (but equivalent width) than what it did before the reordering, and it also
penalizes the time taken for selecting the type to use for uint32_t.

ABI, actually, since it changes the C++ mangling.

Paolo




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