commit 8d588ccee57390aa01c2395fc599bbe6506ee13a
author Bram Moolenaar <Bram@vim.org> Tue Feb 25 21:47:45 2020 +0100
committer Bram Moolenaar <Bram@vim.org> Tue Feb 25 21:47:45 2020 +0100
tree 327836ed8bfb53b077dba03c311fce8539d067f6
parent c593bec4120f122e8a9129ec461968f1bd214435

patch 8.2.0316: ex_getln.c code has insufficient test coverage

Problem:    ex_getln.c code has insufficient test coverage.
Solution:   Add more tests. Fix a problem. (Yegappan Lakshmanan, closes #5693)

src/cmdhist.c

diff --git a/src/cmdhist.c b/src/cmdhist.c
index 683fc86..d708535 100644
--- a/src/cmdhist.c
+++ b/src/cmdhist.c
@@ -389,7 +389,7 @@
 		i += hislen;
 		wrapped = TRUE;
 	    }
-	if (hist[i].hisnum == num && hist[i].hisstr != NULL)
+	if (i >= 0 && hist[i].hisnum == num && hist[i].hisstr != NULL)
 	    return i;
     }
     else if (-num <= hislen)