No, Bison *doesn't* have that problem. It's Flex.

We're supposedly suppressing that warning with Flex; more debugging is
necessary.

diff --git a/diag-control.h b/diag-control.h
index 270a5852406026732184fddbc6b137cf3ba59401..cfc581b37b57ca7b43e7efba717f42eb6249756f 100644 (file)
--- a/diag-control.h
+++ b/diag-control.h
@@ -168,8 +168,8 @@
   /*
    * Bison.
    *
-   * The generated code may have functions with unused parameters and
-   * unreachable code, so suppress warnings about those.
+   * The generated code may have functions with unreachable code, so
+   * suppress warnings about those.
    */
   #if defined(_MSC_VER)
     /*
@@ -192,7 +192,6 @@
      */
     #define DIAG_OFF_BISON_BYACC \
       PCAP_DO_PRAGMA(clang diagnostic push) \
-      PCAP_DO_PRAGMA(clang diagnostic ignored "-Wunused-parameter") \
       PCAP_DO_PRAGMA(clang diagnostic ignored "-Wunreachable-code")
     #define DIAG_ON_BISON_BYACC \
       PCAP_DO_PRAGMA(clang diagnostic pop)
@@ -204,7 +203,6 @@
      */
     #define DIAG_OFF_BISON_BYACC \
       PCAP_DO_PRAGMA(GCC diagnostic push) \
-      PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wunused-parameter") \
       PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wunreachable-code")
     #define DIAG_ON_BISON_BYACC \
       PCAP_DO_PRAGMA(GCC diagnostic pop)