Fix path_utils_ut segfault

In the case where the allocated buffer is not large enough to hold
the resulting absolute path, we were writing out a null terminator
outside of the buffer, instead of at its beginning.

Also fixes potential issue where split_path would not initialize
the count to zero if it returned a failure.

1 files changed, 3 insertions, 2 deletions

diff --git a/common/path_utils/path_utils.c b/common/path_utils/path_utils.c
index 52f36500..493e0a4d 100644
--- a/common/path_utils/path_utils.c
+++ b/common/path_utils/path_utils.c
@@ -249,13 +249,13 @@ int make_path_absolute(char *absolute_path, size_t absolute_path_size, const cha
     for (dst = absolute_path; *dst && dst < dst_end; dst++);
     if (!(path && *path)) return result;
     if (dst > dst_end) {
-        *dst = 0;
+        *absolute_path = 0;
         return ENOBUFS;
     }
 
     *dst++ = '/';
     if (dst > dst_end) {
-        *dst = 0;
+        *absolute_path = 0;
         return ENOBUFS;
     }
 
@@ -272,6 +272,7 @@ char **split_path(const char *path, int *count)
     const char *start, *end;
     char *mem_block, **array_ptr, *component_ptr;
 
+    if (count) *count = 0;
     if (!path) return NULL;
 
     /* If path is absolute add in special "/" root component */