Merge branch 'bug24826_031' into maint-0.3.1

caisen · Jan 18, 2018 · f406b9d · f406b9d
2 parents af8cadf + 4bb831e
commit f406b9d
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diff --git a/changes/bug24826_031 b/changes/bug24826_031
@@ -0,0 +1,4 @@
+  o Minor bugfixes (performance, fragile-hardening):
+    - Improve the performance of our consensus-diff application code when Tor
+      is built with the --enable-fragile-hardening option set. Fixes bug
+      24826; bugfix on  0.3.1.1-alpha.
diff --git a/src/or/consdiff.c b/src/or/consdiff.c
@@ -1285,8 +1285,11 @@ consdiff_apply_diff(const smartlist_t *cons1,
 STATIC int
 consensus_split_lines(smartlist_t *out, const char *s, memarea_t *area)
 {
+  const char *end_of_str = s + strlen(s);
+  tor_assert(*end_of_str == '\0');
+
   while (*s) {
-    const char *eol = strchr(s, '\n');
+    const char *eol = memchr(s, '\n', end_of_str - s);
     if (!eol) {
       /* File doesn't end with newline. */
       return -1;