[openssl/openssl] 39f468: asn1: centralize aux const-callback dispatch to av...

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 39f46844c6e06e26bea34f300c7fc61c06bb20b8
      https://github.com/openssl/openssl/commit/39f46844c6e06e26bea34f300c7fc61c06bb20b8
  Author: Nikola Pajkovsky <[email protected]>
  Date:   2026-06-22 (Mon, 22 Jun 2026)

  Changed paths:
    M crypto/asn1/asn1_local.h
    M crypto/asn1/tasn_enc.c
    M crypto/asn1/tasn_prn.c
    M crypto/asn1/tasn_utl.c

  Log Message:
  -----------
  asn1: centralize aux const-callback dispatch to avoid function pointer cast

Replace the per-call-site `(ASN1_aux_const_cb *)aux->asn1_cb` cast in
ASN1_item_ex_i2d() and asn1_item_print_ctx() with a shared helper,
ossl_asn1_aux_const_cb(), which invokes the legacy non-const callback
through its real type. This avoids the UBSAN function-pointer-type
mismatch while preserving backward compatibility.

Fixes: https://github.com/openssl/project/issues/1970
Signed-off-by: Nikola Pajkovsky <[email protected]>

Reviewed-by: Bob Beck <[email protected]>
Reviewed-by: Eugene Syromiatnikov <[email protected]>
Reviewed-by: Neil Horman <[email protected]>
MergeDate: Sun Jun 21 23:38:12 2026
(Merged from https://github.com/openssl/openssl/pull/31541)



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