Submodule subprojects/c-stdaux 1bcec74..11930d2:
diff --git a/subprojects/c-stdaux/src/c-stdaux.h b/subprojects/c-stdaux/src/c-stdaux.h
index d305780..a02aed9 100644
--- a/subprojects/c-stdaux/src/c-stdaux.h
+++ b/subprojects/c-stdaux/src/c-stdaux.h
@@ -437,9 +437,10 @@ _Static_assert(_assertion, _message); \
  * macro is used with constant expressions, the compiler will be able to
  * optimize it away.
  */
-static inline void c_assert(bool expr_result) {
-        assert(expr_result);
-}
+#define c_assert(_x) ({                                                         \
+                const _c_unused_ bool c_assert_result = (_x);                   \
+                assert(c_assert_result && #_x);                                 \
+        })
 
 /**
  * c_errno() - return valid errno
diff --git a/subprojects/c-stdaux/src/test-api.c b/subprojects/c-stdaux/src/test-api.c
index 31d4d54..fb50066 100644
--- a/subprojects/c-stdaux/src/test-api.c
+++ b/subprojects/c-stdaux/src/test-api.c
@@ -170,6 +170,11 @@ static void test_api_macros(void) {
                 c_assert(c_align_to(0, 0) == 0);
         }
 
+        /* c_assert */
+        {
+                c_assert(true);
+        }
+
         /* C_DEFINE_CLEANUP / C_DEFINE_DIRECT_CLEANUP */
         {
                 int v = 0;
@@ -181,7 +186,6 @@ static void test_api_macros(void) {
 
 static void test_api_functions(void) {
         void *fns[] = {
-                (void *)c_assert,
                 (void *)c_errno,
                 (void *)c_free,
                 (void *)c_close,