http://d.puremagic.com/issues/show_bug.cgi?id=10124
Summary: Array length increases on subtraction of a big number
instead of throwing RangeError
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Keywords: wrong-code
Severity: normal
Priority: P2
Component: DMD
AssignedTo: [email protected]
ReportedBy: [email protected]
Blocks: 10123
--- Comment #0 from Denis Shelomovskij <[email protected]> 2013-05-20
15:52:02 MSD ---
This code runs fine but should fail in runtime:
---
void main()
{
int[] arr;
arr.length -= size_t.max; // Let's subtract a very big number
assert(arr.length == 1); // Passes!
}
---
Also there is a question what to do with `arr.length -= -1`? I'd like this code
to be rejected as incorrect mixed signed/unsigned operation (see also Issue
259).
This is a compiler bug as dmd just calls `_d_arraysetlengthT` without any
information about operation type. I.e. it works like `arr.length = arr.length -
size_t.max`.
--
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
