The OpenSSL function sk_X509_delete_ptr() resolves through preprocessor substitution to '(X509 *)sk_delete_ptr()', in which the cast causes the call to be interpreted as an expression (whose value is not used) rather than a statement, resulting in the following error under Clang:
...: error: expression result unused [-Werror,-Wunused-value] Add (VOID) casts to silence the error. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org> --- CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Verify.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Verify.c b/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Verify.c index 242ba10bbf0e..6a84137632b7 100644 --- a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Verify.c +++ b/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Verify.c @@ -541,7 +541,7 @@ Pkcs7GetCertificatesList ( goto _Error; } } - sk_X509_delete_ptr (CertCtx.untrusted, Signer); + (VOID)sk_X509_delete_ptr (CertCtx.untrusted, Signer); // // Build certificates stack chained from Signer's certificate. @@ -571,7 +571,7 @@ Pkcs7GetCertificatesList ( if (!sk_X509_push (CertCtx.chain, Issuer)) { goto _Error; } - sk_X509_delete_ptr (CertCtx.untrusted, Issuer); + (VOID)sk_X509_delete_ptr (CertCtx.untrusted, Issuer); Cert = Issuer; continue; -- 1.9.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel