EXCEPTION_ACCESS_VIOLATION in windows64

Internals & Design
1

I have a bug to report in Version 1.1.0 (2019-01-21) on 64 bit Windows.

I get Julia crashing and the following bug report a bunch of times

Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x7ffe39eba1b9 –

This happens whenever I run the code (this is the MWE):

Convergence = 2.3728475043304586e13
ReportingSigFig = UInt64(10)
lpad(round(Convergence, digits=ReportingSigFig),ReportingSigFig+3)

But the following two version run as expected without error:

# A smaller number to round is fine
Convergence = 2.3728475043304586
ReportingSigFig = UInt64(10)
lpad(round(Convergence, digits=ReportingSigFig),ReportingSigFig+3)

# Using Signed Ints also makes it work
Convergence = 2.3728475043304586e13
ReportingSigFig = Int64(10)
lpad(round(Convergence, digits=ReportingSigFig),ReportingSigFig+3)
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2

The MWE can be shortened to:

Convergence = 2.3728475043304586e13
lpad(Convergence,UInt64(13))

with the error still occuring

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3

Thanks, I can reproduce on the official linux build with julia 1.1

julia> lpad("xx", UInt64(1), " ")

signal (11): Segmentation fault
in expression starting at no file:0
Segmentation fault (core dumped)

Reported on github: https://github.com/JuliaLang/julia/issues/32160

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4

Should be fixed in: Fix unsigned wrap around in lpad/rpad/string allocation by c42f · Pull Request #32161 · JuliaLang/julia · GitHub

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