RFR(L): 8037816 : Fix for 8036122 breaks build with Xcode5/clang
david.r.chase at oracle.com
Fri Apr 25 12:10:54 UTC 2014
On 2014-04-25, at 1:29 AM, Stefan Karlsson <stefan.karlsson at oracle.com> wrote:
> Hi David,
>> Among the changes/observations:
>> int64_t and jlong are NOT NOT NOT the same type on all platforms.
> Could you clarify this? To me they both look like 64 bit signed integers. What am I missing?
On at least one 64-bit platform (I think at least XCode 4.6.3 / gcc 4.2 on Mountain Lion) one
of the two is defined to be "long" and the other "long long". Even though both of those are
64 bits, gcc "knows" that there are platforms where long is only 32 bits, and hence this could
be a problem when you recompile on different platform.
Thus the warnings, against future unportability.
Gcc doesn't "know" that we plan to change our macro definitions for that platform.
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