1 files changed, 10 insertions, 0 deletions
diff --git a/src/sciteco.h b/src/sciteco.h
index 388d6c4..2e6ced2 100644
--- a/src/sciteco.h
+++ b/src/sciteco.h
@@ -117,6 +117,16 @@ extern volatile sig_atomic_t teco_interrupted;
  */
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(FILE, fclose);
 
+/**
+ * A "safe" compile-time assertion, which also passes if the expression is not constant.
+ *
+ * Can be useful since different compilers have different ideas about what's a constant expression.
+ * In particular GCC does not treat `static const` objects as constant (in the way it qualifies
+ * for _Static_assert()), while constexpr is only available since C23.
+ */
+#define TECO_ASSERT_SAFE(EXPR) \
+	G_STATIC_ASSERT(!__builtin_constant_p(EXPR) || (EXPR))
+
 /*
  * BEWARE DRAGONS!
  */