ciniparser: Add a check that len remains within bounds.

If the line is made solely of whitespaces, they get removed and we end up with len
set to -1. Therefore we need an additional check to avoid dereferencing line[-1].

diff --git a/ccan/ciniparser/ciniparser.c b/ccan/ciniparser/ciniparser.c
index d28c15817e10de530ef43e05744d56106ae0fef9..2b60e409bd7ac7259d2e5245fd457e8087ed7472 100644 (file)
--- a/ccan/ciniparser/ciniparser.c
+++ b/ccan/ciniparser/ciniparser.c
@@ -423,7 +423,7 @@ dictionary *ciniparser_load(const char *ininame)
                }
 
                /* Detect multi-line */
                }
 
                /* Detect multi-line */

-               if (line[len] == '\\') {
+               if (len >= 0 && line[len] == '\\') {

                        /* Multi-line value */
                        last = len;
                        continue;
                        /* Multi-line value */
                        last = len;
                        continue;