From 54502fe14da1f992215c87484722cf5adc5ba414 Mon Sep 17 00:00:00 2001
From: Justin King <jcking@google.com>
Date: Wed, 10 Jun 2026 09:59:25 -0700
Subject: [PATCH] Workaround C++ bug taking a reference to packed field

PiperOrigin-RevId: 929919608
---
 cel-c/duration.h          | 9 +++++++++
 cel-c/src/BUILD           | 1 +
 cel-c/src/runtime_test.cc | 3 ++-
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/cel-c/duration.h b/cel-c/duration.h
index ce03946..ac07980 100644
--- a/cel-c/duration.h
+++ b/cel-c/duration.h
@@ -121,6 +121,15 @@ static CEL_INLINE void cel_Duration_ToUnix(cel_Duration d,
   }
 }
 
+// cel_Duration_ToUnixSeconds
+//
+// Returns the seconds part of the cel_Duration.
+CEL_ATTRIBUTE_NODISCARD
+static CEL_INLINE int64_t cel_Duration_ToUnixSeconds(cel_Duration d) {
+  CEL_ASSERT(cel_Duration_Valid(d.sec, d.nsec));
+  return d.sec;
+}
+
 // cel_Duration_Equals
 //
 // Tests the two durations for equality.
diff --git a/cel-c/src/BUILD b/cel-c/src/BUILD
index 13222ee..2756240 100644
--- a/cel-c/src/BUILD
+++ b/cel-c/src/BUILD
@@ -739,6 +739,7 @@ cc_test(
         "//cel-c:arena",
         "//cel-c:ast",
         "//cel-c:config",
+        "//cel-c:duration",
         "//cel-c:error",
         "//cel-c:error_code",
         "//cel-c:runtime",
diff --git a/cel-c/src/runtime_test.cc b/cel-c/src/runtime_test.cc
index cf71284..fe34146 100644
--- a/cel-c/src/runtime_test.cc
+++ b/cel-c/src/runtime_test.cc
@@ -33,6 +33,7 @@
 #include "cel-c/arena.h"
 #include "cel-c/ast.h"
 #include "cel-c/config.h"
+#include "cel-c/duration.h"
 #include "cel-c/error.h"
 #include "cel-c/error_code.h"
 #include "cel-c/program.h"
@@ -796,7 +797,7 @@ TEST_F(RuntimeTest, CallDuration) {
   _cel_ActivationPtr act(Activate(prog.get(), &var_resolver));
   cel_Value value = Execute(act.get());
   ASSERT_TRUE(cel_Value_IsDuration(&value));
-  EXPECT_EQ(cel_Value_GetDuration(&value).sec, 3600);
+  EXPECT_EQ(cel_Duration_ToUnixSeconds(cel_Value_GetDuration(&value)), 3600);
 
   prog = Parse(R"cel(duration("invalid"))cel");
   act = Activate(prog.get(), &var_resolver);