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core: ensure length is not negative in function string_strndup

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This commit is contained in:
Sébastien Helleu
2017-04-22 15:15:54 +02:00
parent 572678100b
commit 94355e2e38
2 changed files with 3 additions and 1 deletions
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src/core/wee-string.c
+1 -1
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@@ -76,7 +76,7 @@ string_strndup (const char *string, int length)
{
char *result;
if (!string)
if (!string || (length < 0))
return NULL;
if ((int)strlen (string) < length)
tests/unit/core/test-string.cpp
+2
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@@ -123,6 +123,8 @@ TEST(String, Duplicate)
POINTERS_EQUAL(NULL, string_strndup (NULL, 0));
POINTERS_EQUAL(NULL, string_strndup (str_test, -1));
str = string_strndup (str_test, 0);
CHECK(str);
CHECK(str != str_test);