EAPI size_t eina_strlcpy(char *dst, const char *src, size_t siz) EINA_ARG_NONNULL(1, 2);
EAPI size_t eina_strlcat(char *dst, const char *src, size_t siz) EINA_ARG_NONNULL(1, 2);
-EAPI Eina_Bool eina_str_has_prefix(const char *str, const char *prefix) EINA_PURE EINA_ARG_NONNULL(1, 2);
+EAPI Eina_Bool eina_str_has_prefix(const char *str, const char *prefix) EINA_PURE EINA_ARG_NONNULL(1, 2) EINA_WARN_UNUSED_RESULT;
+EAPI Eina_Bool eina_str_has_suffix(const char *str, const char *suffix) EINA_PURE EINA_ARG_NONNULL(1, 2) EINA_WARN_UNUSED_RESULT;
+EAPI Eina_Bool eina_str_has_extension(const char *str, const char *ext) EINA_PURE EINA_ARG_NONNULL(1, 2) EINA_WARN_UNUSED_RESULT;
-EAPI Eina_Bool eina_str_has_suffix(const char *str, const char *suffix) EINA_PURE EINA_ARG_NONNULL(1, 2);
-EAPI Eina_Bool eina_str_has_extension(const char *str, const char *ext) EINA_PURE EINA_ARG_NONNULL(1, 2);
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-EAPI char **eina_str_split(const char *string, const char *delimiter, int max_tokens) EINA_ARG_NONNULL(1, 2);
-EAPI char **eina_str_split_full(const char *string, const char *delimiter, int max_tokens, unsigned int *elements) EINA_ARG_NONNULL(1, 2, 3);
+EAPI char **eina_str_split(const char *string, const char *delimiter, int max_tokens) EINA_ARG_NONNULL(1, 2) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
+EAPI char **eina_str_split_full(const char *string, const char *delimiter, int max_tokens, unsigned int *elements) EINA_ARG_NONNULL(1, 2, 3) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
EAPI size_t eina_str_join_len(char *dst, size_t size, char sep, const char *a, size_t a_len, const char *b, size_t b_len) EINA_ARG_NONNULL(1, 4, 6);