1 files changed, 4 insertions, 0 deletions
diff --git a/source/core/slang-string.h b/source/core/slang-string.h
index 4c78cc32e..429a60c46 100644
--- a/source/core/slang-string.h
+++ b/source/core/slang-string.h
@@ -583,6 +583,10 @@ namespace Slang
         char operator[](Index id) const
         {
             SLANG_ASSERT(id >= 0 && id < getLength());
+            // Silence a pedantic warning on GCC
+#if __GNUC__
+            if(id < 0) __builtin_unreachable();
+#endif
             return begin()[id];
         }