From: Nick Terrell <terrelln@fb.com>
Date: Mon, 21 Aug 2017 20:30:07 +0000 (-0700)
Subject: [cover] Convert score to U32 and check for zero
X-Git-Tag: fuzz-corpora2~47^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a54a315aa28a6659b935bd6ce95cb962715ebbc;p=thirdparty%2Fzstd.git

[cover] Convert score to U32 and check for zero
---

diff --git a/lib/dictBuilder/cover.c b/lib/dictBuilder/cover.c
index 501b5b490..07fedc2d1 100644
--- a/lib/dictBuilder/cover.c
+++ b/lib/dictBuilder/cover.c
@@ -382,7 +382,7 @@ static void COVER_group(COVER_ctx_t *ctx, const void *group,
 typedef struct {
   U32 begin;
   U32 end;
-  double score;
+  U32 score;
 } COVER_segment_t;
 
 /**
@@ -622,6 +622,10 @@ static size_t COVER_buildDictionary(const COVER_ctx_t *ctx, U32 *freqs,
     /* Select a segment */
     COVER_segment_t segment = COVER_selectSegment(
         ctx, freqs, activeDmers, epochBegin, epochEnd, parameters);
+    /* If the segment covers no dmers, then we are out of content */
+    if (segment.score == 0) {
+      break;
+    }
     /* Trim the segment if necessary and if it is too small then we are done */
     segmentSize = MIN(segment.end - segment.begin + parameters.d - 1, tail);
     if (segmentSize < parameters.d) {