Message414783
The following code will likely crash on I32LP64 systems:
dim = lib.get_array_size(opaque)
ptrs = (c_void_p * dim)()
lib.get_array_values(opaque, ptrs)
for ptr in ptrs:
print(lib.get_object_value(ptr))
What happens is that `ptr` is not a `c_void_p` -- it's just a bare number. And when it's passed to another function it goes in as a (32-bit) `c_int`, resulting in a truncation.
I'm not sure what can be done here (maybe a truncation warning?) but it's definitely a difficult bug to notice when reviewing code. |
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Date |
User |
Action |
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2022-03-09 02:28:03 | taralx | set | recipients:
+ taralx |
2022-03-09 02:28:03 | taralx | set | messageid: <1646792883.64.0.681602765886.issue46966@roundup.psfhosted.org> |
2022-03-09 02:28:03 | taralx | link | issue46966 messages |
2022-03-09 02:28:03 | taralx | create | |
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