collect-symbols: more diagnostic messages.

diff --git a/utils/collect-symbols.c b/utils/collect-symbols.c
index 09165fc..fc0ed21 100644 (file)
--- a/utils/collect-symbols.c
+++ b/utils/collect-symbols.c
@@ -678,12 +678,17 @@ static char *symbol_from_tokens(token_t *tokens, int ntoken)
 
     last = ntoken - 1;
 
-    if (tokens[0].type != TOKEN_WORD)
+    if (tokens[0].type != TOKEN_WORD) {
+        verbose_message(2, "ignoring sequence starting with non-word\n");
         return NULL;
+    }
 
     /* ignore typedefs and everything static */
-    if (MATCHING_TOKEN(0, WORD, "typedef") || MATCHING_TOKEN(0, WORD, "static"))
+    if (MATCHING_TOKEN(0, WORD, "typedef") ||
+        MATCHING_TOKEN(0, WORD, "static")) {
+        verbose_message(2, "ignoring typedef or static sequence\n");
         return NULL;
+    }
 
     /* ignore forward declarations */
     if (ntoken == 3 &&
@@ -691,8 +696,10 @@ static char *symbol_from_tokens(token_t *tokens, int ntoken)
          MATCHING_TOKEN(0, WORD, "union" ) ||
          MATCHING_TOKEN(0, WORD, "enum"  )) &&
         MATCHING_TOKEN(1, WORD, "") &&
-        MATCHING_TOKEN(2, SEMICOLON, ""))
+        MATCHING_TOKEN(2, SEMICOLON, "")) {
+        verbose_message(2, "ignoring forward declaration sequence\n");
         return NULL;
+    }
 
     /* take care of function prototypes */
     if (last > 2) {
@@ -720,6 +727,8 @@ static char *symbol_from_tokens(token_t *tokens, int ntoken)
             return tokens[last-1].value;
     }
 
+    verbose_message(2, "ignoring other non-matching token sequence\n");
+
     return NULL;
 }