detect: add debug statements for byte_extract/isdataat

src/detect-byte-extract.c

@@ -198,7 +198,7 @@ int DetectByteExtractDoMatch(DetectEngineThreadCtx *det_ctx, SigMatch *sm,
     det_ctx->buffer_offset = ptr - payload;
 
     *value = val;
-
+    SCLogDebug("extracted value is %"PRIu64, val);
     return 1;
 }
 

src/detect-isdataat.c

@@ -333,6 +333,7 @@ int DetectIsdataatSetup (DetectEngineCtx *de_ctx, Signature *s, char *isdataatst
         }
         idad->dataat = ((DetectByteExtractData *)bed_sm->ctx)->local_id;
         idad->flags |= ISDATAAT_OFFSET_BE;
+        SCLogDebug("isdataat uses byte_extract with local id %u", idad->dataat);
         SCFree(offset);
     }