ci: fail linting on truncated and wrapping casts #5233
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This PR is a draft until each instance of the lint behavior is addressed in the codebase. Seems reasonable to include them all here. |
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This has become wildly out of date, and rebasing seems like an exercise in futility. Closing so that a newer, shinier, better PR can take its place. |
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Description
Fails linting on possible truncated or wrapping casts. Various updates to address failures.
Closes #5478.
Motivation and Context
It was observed in another PR that truncated casts are not picked up by the linter. The
clippy::cast_possible_truncationlint will catch this, but was disabled. Some of these casts may be risky, so it seems prudent to fail on them unless specifically allowed and documented.This PR enables the lint as a
deny, as well as a related lint for wrapping. For each lint failure, it either uses anallow(if the truncation is impossible or safe) or makes an update to fix it.Note that after PR 5237 is merged, it can be assumed that the target
usizeis not 32 bits.How Has This Been Tested?
It hasn't. This behavior occurs in multiple places (around a couple dozen) within the codebase; in each case, it needs to be decided if the cast is safe (in which case the lint can be selectively disabled) or risky (in which case it should be replaced). This should happen before the PR is merged.