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-rw-r--r--libhashsum.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/libhashsum.h b/libhashsum.h
index 0e49083..541f4e6 100644
--- a/libhashsum.h
+++ b/libhashsum.h
@@ -396,7 +396,16 @@ struct libhashsum_hasher {
* @return 0 on success, -1 on failure
*
* @throws EINVAL `algorithm` is not recognised
+ * @throws EINVAL `algorithm` requires parameters, and is therefore
+ * not supported by this function (use dedicated
+ * initialiser instead)
* @throws ENOSYS Support for `algorithm` was excluded at compile time
+ * @throws ENOSYS The `algorithm` requires a newer version of the library
+ * that application was compiled for (the application
+ * is however linked to new enough version of the library)
+ * (specifically this means that the application's version
+ * of `union libhashsum_state`, and thus also
+ * `struct libhashsum_hasher`, is too small to store the state)
*
* @since 1.0
*/
@@ -413,6 +422,12 @@ int libhashsum_init_hasher(struct libhashsum_hasher *this, enum libhashsum_algor
*
* @throws EINVAL `algorithm` is not recognised or contains an invalid value
* @throws ENOSYS Support for `algorithm` was excluded at compile time
+ * @throws ENOSYS The `algorithm` requires a newer version of the library
+ * that application was compiled for (the application
+ * is however linked to new enough version of the library)
+ * (specifically this means that the application's version
+ * of `union libhashsum_state`, and thus also
+ * `struct libhashsum_hasher`, is too small to store the state)
*
* @since 1.0
*/