efriedma added inline comments.
================
Comment at: lib/CodeGen/CGExprConstant.cpp:1340
+ return C;
+ return getNullPtr(PT, DestType);
}
----------------
Consider code like the following:
int x = 0;
auto y1 = (__specialaddrspace int*)0;
auto y2 = (__specialaddrspace int*)((void)0, 0);
auto y3 = (__specialaddrspace int*)x;
How do you expect these three cases to behave? (The first case involves a C
null pointer constant, the second and third cases are different ways of writing
a general int->ptr conversion.)
https://reviews.llvm.org/D26196
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