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Reject C++ pointer casts to undersized integers - #454

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71iq:fix/edg-28892-pointer-integer-cast
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71iq wants to merge 5 commits into
edgcpp:mainfrom
71iq:fix/edg-28892-pointer-integer-cast

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@71iq

@71iq 71iq commented Nov 1, 2026

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Require a sufficiently wide destination type for pointer-to-integer reinterpret_cast conversions in GNU C++ mode. Microsoft and C compatibility behavior is preserved.

Related discussion: #298
Previously accepted by Mike Herrick as issue EDGcpfe/28892.

Adds rejection tests for object and function pointers and a valid pointer-width conversion test. GCC 13 rejects the negative cases and accepts the positive case.

EDG build, regression testing, and test recordings are pending because the Docker development environment is unavailable. This PR is a draft until those checks are completed.

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AcknowlEDG review results updated for 389fa8f1f379:

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