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commit    7a8e35a4c9647e97ab44a3059be21903cdf6bfeb
Author:   Nathan Bossart <nathan@postgresql.org>
Date:     Wed Apr 29 17:25:09 2026 +0000
First released in: 14.23, 15.18, 16.14, 17.10, 18.4

    Suppress "has no symbols" linker warnings on macOS.
    
    After a recent macOS update, building Postgres produces warnings
    that look like this:
    
        ranlib: warning: 'libpgport_shlib.a(pg_cpu_x86.c.o)' has no symbols
        ranlib: warning: 'libpgport_shlib.a(pg_popcount_x86.c.o)' has no symbols
    
    To fix, add a dummy symbol to files that may otherwise have none.
    Per project policy, this is a candidate for back-patching into
    out-of-support branches: it suppresses annoying compiler warnings
    but changes no behavior.
    
    Reported-by: Zhang Mingli <zmlpostgres@gmail.com>
    Reviewed-by: John Naylor <johncnaylorls@gmail.com>
    Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
    Discussion: https://postgr.es/m/229aaaf3-f529-44ed-8e50-00cb6909af21%40Spark
    Backpatch-through: 13


 src/common/protocol_openssl.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/common/protocol_openssl.c b/src/common/protocol_openssl.c
index 089cbd33cca..b8f5d183e06 100644
--- a/src/common/protocol_openssl.c
+++ b/src/common/protocol_openssl.c
@@ -114,4 +114,10 @@ SSL_CTX_set_max_proto_version(SSL_CTX *ctx, int version)
 	return 1;					/* success */
 }
 
-#endif							/* !SSL_CTX_set_min_proto_version */
+#else							/* !SSL_CTX_set_min_proto_version */
+
+/* prevent linker complaints about empty module */
+extern int	protocol_openssl_dummy_variable;
+int			protocol_openssl_dummy_variable = 0;
+
+#endif							/* SSL_CTX_set_min_proto_version */


[parent: 4b062bd442ad]