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Author SHA1 Message Date
Arne Welzel
e48618e244 Expr: Warn on count underflow for c -= 1 and c = c - 1
I've skipped treating overflows as warnings, as ++ wrapping around at 0
doesn't currently trigger a runtime error and might be expected to be
quiet and silently wrap.

Closes #2486
2022-11-30 10:08:52 +01:00