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-rw-r--r--src/common/util.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/common/util.c b/src/common/util.c
index e4a2889d7..11dbd2b71 100644
--- a/src/common/util.c
+++ b/src/common/util.c
@@ -215,6 +215,8 @@ int tor_strpartition(char *dest, size_t dest_len,
tor_assert(dest_len < SIZE_T_CEILING);
len_in = strlen(s);
len_ins = strlen(insert);
+ tor_assert(len_in < SIZE_T_CEILING);
+ tor_assert(len_in/n < SIZE_T_CEILING/len_ins); /* avoid overflow */
len_out = len_in + (len_in/n)*len_ins;
is_even = (len_in%n) == 0;
switch (rule)