[LLVMdev] "long long" type in C backend
clattner at apple.com
Mon Aug 11 13:45:55 PDT 2008
On Aug 11, 2008, at 1:40 PM, Jonathan S. Shapiro wrote:
> On Mon, 2008-08-11 at 13:29 -0700, Chris Lattner wrote:
>> The CBE output can't #include standard headers, the macros and types
>> that are defined in the headers will conflict.
> Is that true for the freestanding header files?
Yes. The only exceptions to the rule have been alloca.h, setjmp.h and
stdarg.h, and even those have been a huge pain and we avoid them on
platforms where we can.
One example problem is that llvm doesn't preserve signedness of types,
so you end up with a header defining:
and the CBE emits a prototype of:
which leads to compilation failures.
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