[clang] [clang][ExprConst] Consider integer pointers of value 0 nullptr (PR #150164)

[Richard Smith via cfe-commits]

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@@ -27,12 +27,6 @@ template void f<B{nullptr}>();
 // CHECK: define weak_odr void @_Z1fIXtl1BLPKi32EEEEvv(
 // MSABI: define {{.*}} @"??$f@$2UB@@PEBH0CA at H0A@@@@YAXXZ"
 template void f<B{fold((int*)32)}>();
-#ifndef _WIN32
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zygoloid wrote:

We should ensure we still have a test for mangling in the case where the null pointer representation is not zero. I don't know if there are any MS ABI targets where that happens, and I would guess there aren't, but we should retain an Itanium ABI test at least.

https://github.com/llvm/llvm-project/pull/150164