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Avoid nesting status macros #1450

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jchadwick-buf
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@jchadwick-buf jchadwick-buf commented Apr 22, 2025

In MSVC, when there are nested macro invocations, the value of LINE will be the same across the nested invocations. This causes temporaries from multiple nested invocations of CEL_ASSIGN_OR_RETURN to conflict with each-other.

Thankfully, this issue seems to only occur in one place in the entire codebase, and it probably won't recur too often.

Related issue: #768

In MSVC, when there are nested macro invocations, the value of __LINE__ will be the same across the nested invocations. This causes temporaries from multiple nested invocations of CEL_ASSIGN_OR_RETURN to conflict with each-other.

Thankfully, this issue seems to only occur in one place in the entire codebase, and it probably won't recur too often.
@jnthntatum jnthntatum self-assigned this May 2, 2025
@jnthntatum jnthntatum self-requested a review May 2, 2025 22:27
@copybara-service copybara-service bot merged commit 97068d5 into google:master May 2, 2025
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@jchadwick-buf jchadwick-buf deleted the avoid-nested-status-macros branch May 8, 2025 17:21
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2 participants