fix a compiler crash with .varargs
proc types
#1396
Merged
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Summary
Fix the compiler crashing when a non-closure
proc
type with C-stylevarargs is used somewhere. Only the C backend was affected.
Fixes #1394.
Details
mirtypes.callConv
didn't consider thex
field storing a booleanvalue in the most-significant bit, resulting in range defect
TCallingConvention
enum value