Size of bool may not be one

Author: AntoinePrv

cpp/src/arrow/util/bpacking_scalar_codegen.py

@@ -77,9 +77,7 @@ class ScalarUnpackGenerator:
 
     @property
     def out_bit_width(self) -> int:
-        if self.out_type == "bool":
-            return 8
-        elif self.out_type.startswith("uint"):
+        if self.out_type.startswith("uint"):
             return int(self.out_type.removeprefix("uint").removesuffix("_t"))
         raise NotImplementedError(f"Unsupported type {self.out_type}")
 
@@ -218,7 +216,7 @@ def print_uint32_fallback_struct(self):
     def print_structs(self):
         # The algorithm works for uint16_t (for simd width <=256) but is slower
         # than using uint32_t + static_cast loop
-        if self.out_bit_width <= 16:
+        if self.out_type == "bool" or self.out_bit_width <= 16:
             self.print_uint32_fallback_struct()
             return
         for bit in range(1, self.out_bit_width):