altos: Add -Wconversion
authorKeith Packard <keithp@keithp.com>
Thu, 17 Feb 2022 05:48:01 +0000 (21:48 -0800)
committerKeith Packard <keithp@keithp.com>
Thu, 17 Feb 2022 05:48:01 +0000 (21:48 -0800)
This adds the -Wconversion flag to detect potential mistakes in
implicit type conversion.

Signed-off-by: Keith Packard <keithp@keithp.com>

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