unsigned int{16,32,64}_t at global scope causes Segfault (attempted to read from 0x8)

[siliconvoodoo]

unsigned int16_t g;

result

Internal compiler error: access violation. Attempted to read from address 0x0000000000000008

Qualifiers (static, extern...) don't change the observable behavior. Fun fact: use a matrix/vector expansion (uint16_t1x1) and it doesn't crash anymore

[pow2clk]

Well, that's unfortunate. 😣

Just in case you're unaware, the expected way to get an unsigned 16-bit integer is to use uint16_t which worked when I tried it. Obviously we shouldn't crash with this usage, but just in case this is blocking you I hope that helps.

[siliconvoodoo]

Thanks. It's ok it doesn't block me, I'm just here to be your nemesis :p

[llvm-beanz]

I ran across this issue myself recently. There's something gnarly about how 16-bit type aliases are handled:

https://godbolt.org/z/M4TfanMfr