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Insert null checks for pointer dereferences when debug assertions are enabled

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Similar to how the alignment is already checked, this adds a check
for null pointer dereferences in debug mode. It is implemented similarly
to the alignment check as a MirPass.

This is related to a 2025H1 project goal for better UB checks in debug
mode: https://github.com/rust-lang/rust-project-goals/pull/177.
This commit is contained in:
Bastian Kersting 2024-12-17 13:00:22 +00:00
parent 851322b74d
commit b151b513ba
32 changed files with 281 additions and 6 deletions
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3
compiler/rustc_middle/messages.ftl
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@ -17,6 +17,9 @@ middle_assert_gen_resume_after_panic = `gen` fn or block cannot be further itera
middle_assert_misaligned_ptr_deref =
misaligned pointer dereference: address must be a multiple of {$required} but is {$found}
middle_assert_null_ptr_deref =
null pointer dereference occurred
middle_assert_op_overflow =
attempt to compute `{$left} {$op} {$right}`, which would overflow