Provide a strndup() fallback

This standard function is not available everywhere, so we detect it and
provide a fallback if missing.

1 files changed, 7 insertions, 0 deletions

diff --git a/libass/ass_utils.h b/libass/ass_utils.h
index 1ce451cc..579ac406 100644
--- a/libass/ass_utils.h
+++ b/libass/ass_utils.h
@@ -27,6 +27,8 @@
 #include <assert.h>
 #include <errno.h>
 
+#include "config.h"
+
 #ifdef CONFIG_ENCA
 #include <enca.h>
 #endif
@@ -54,6 +56,11 @@ int has_avx(void);
 int has_avx2(void);
 #endif
 
+#ifndef HAVE_STRNDUP
+char *ass_strndup(const char *s, size_t n);
+#define strndup ass_strndup
+#endif
+
 void *ass_aligned_alloc(size_t alignment, size_t size);
 void ass_aligned_free(void *ptr);