Fix OutOfMemory in arrayshow with unsigned indices #59925
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shreyas-omkar
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vtjnash
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Oct 24, 2025
| w = A[k][1] + A[k][2] | ||
| if k % M == m | ||
| l = repeat(" ", max(0, A[k][1]-length(vdots))) | ||
| l = repeat(" ", max(0, Int(A[k][1])-length(vdots))) |
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| l = repeat(" ", max(0, Int(A[k][1])-length(vdots))) | |
| l = repeat(" ", max(0, Signed(A[k][1])-length(vdots))) |
vtjnash
reviewed
Oct 24, 2025
| r = k == length(A) && !pad_right ? | ||
| "" : | ||
| repeat(" ", max(0, w-length(vdots)-length(l))) | ||
| repeat(" ", max(0, Int(w)-length(vdots)-length(l))) |
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| repeat(" ", max(0, Int(w)-length(vdots)-length(l))) | |
| repeat(" ", max(0, Signed(w)-length(vdots)-length(l))) |
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Fixes #53907
The subtraction
A[k][1]-length(vdots)could underflow ifA[k][1]was a
UInt(e.g.,UInt(0)), leading to a massive stringallocation. This commit casts the values to
Intbefore thesubtraction to prevent the underflow.