new: ci: Add Debian "trixie" (386)

Merge branch 'mnowak/add-debian-trixie-386' into 'main'

See merge request isc-projects/bind9!12079

.gitlab-ci.yml

@@ -231,6 +231,10 @@ stages:
   image: "$CI_REGISTRY_IMAGE:debian-trixie-amd64cross32"
   <<: *linux_amd64
 
+.debian-trixie-386: &debian_trixie_386_image
+  image: "$CI_REGISTRY_IMAGE:debian-trixie-386"
+  <<: *linux_amd64
+
 .debian-sid-amd64: &debian_sid_amd64_image
   image: "$CI_REGISTRY_IMAGE:debian-sid-amd64"
   <<: *linux_amd64
@@ -1423,6 +1427,30 @@ gcc:trixie:amd64cross32:
   <<: *debian_trixie_amd64cross32_image
   <<: *build_job
 
+# Jobs for regular GCC builds on Debian 13 "trixie" (386)
+
+gcc:trixie:386:
+  variables:
+    CC: gcc
+    CFLAGS: "${CFLAGS_COMMON}"
+    EXTRA_CONFIGURE: "-Didn=enabled"
+  <<: *debian_trixie_386_image
+  <<: *build_job
+
+system:gcc:trixie:386:
+  <<: *debian_trixie_386_image
+  <<: *system_test_job
+  needs:
+    - job: gcc:trixie:386
+      artifacts: true
+
+unit:gcc:trixie:386:
+  <<: *debian_trixie_386_image
+  <<: *unit_test_job
+  needs:
+    - job: gcc:trixie:386
+      artifacts: true
+
 # Run with pkcs11-provider tests
 gcc:ossl3:trixie:amd64:
   <<: *debian_trixie_amd64_image

bin/tests/system/isctest/asyncserver.py

@@ -1375,8 +1375,12 @@ class AsyncDnsServer(AsyncServer):
                 qctx.socket,
                 qctx.protocol.name,
             )
+            try:
+                response_text = str(response)
+            except OverflowError:
+                response_text = "<response not representable as text>"
             logging.debug(
-                "\n".join([f"[OUT] {l}" for l in [""] + str(response).splitlines()])
+                "\n".join([f"[OUT] {l}" for l in [""] + response_text.splitlines()])
             )
             return
 

bin/tests/system/isctest/query.py

@@ -44,6 +44,17 @@ def generic_query(
     log_response: bool = True,
 ) -> Any:
 
+    def _safe_to_text(msg: dns.message.Message) -> str:
+        """
+        Convert a DNS message to text, tolerating dnspython's failure to render
+        RRSIG inception/expiration timestamps that overflow the platform's
+        time_t (e.g. post-2038 values on 32-bit systems).
+        """
+        try:
+            return msg.to_text()
+        except OverflowError:
+            return "<message not representable as text>"
+
     def log_querymsg(exception: Exception | None = None) -> None:
         """
         Helper for logging query message. Call this *after* query_func() has
@@ -54,7 +65,7 @@ def generic_query(
         nonlocal log_query
         if log_query:
             isctest.log.debug(
-                f"isc.query.{query_func.__name__}(): query\n{message.to_text()}"
+                f"isc.query.{query_func.__name__}(): query\n{_safe_to_text(message)}"
             )
             log_query = False  # only log query once
 
@@ -99,7 +110,7 @@ def generic_query(
         if res:
             if log_response:
                 isctest.log.debug(
-                    f"isc.query.{query_func.__name__}(): response\n{res.to_text()}"
+                    f"isc.query.{query_func.__name__}(): response\n{_safe_to_text(res)}"
                 )
             if res.rcode() == expected_rcode or expected_rcode is None:
                 return res

lib/dns/zone.c

@@ -1109,12 +1109,12 @@ static isc_result_t
 copy_initfile(dns_zone_t *zone) {
 	isc_result_t result;
 	FILE *input = NULL, *output = NULL;
-	size_t len;
+	off_t len;
 
 	CHECK(isc_stdio_open(zone->initfile, "r", &input));
 	CHECK(isc_stdio_open(zone->masterfile, "w", &output));
 
-	CHECK(isc_file_getsizefd(fileno(input), (off_t *)&len));
+	CHECK(isc_file_getsizefd(fileno(input), &len));
 
 	do {
 		char buf[BUFSIZ];