1 files changed, 18 insertions, 0 deletions
diff --git a/io/vasprintf.c b/io/vasprintf.c
new file mode 100644
index 0000000..24f9332
--- /dev/null
+++ b/io/vasprintf.c
@@ -0,0 +1,18 @@
+#include "../memory.h"
+#include "io.h"
+
+int vasprintf(char **string, char const *restrict format, va_list arg)
+{
+	va_list tmp;
+	va_copy(tmp, arg);
+	int lenght = _vsnprintf_wrap(NULL, 0, format, tmp);
+	va_end(tmp);
+	if (lenght < 0) {
+		return 1;
+	}
+	*string = reallocarray(NULL, (size_t)lenght + 1, sizeof *string);
+	if (*string == NULL) {
+		return 1;
+	}
+	return _vsnprintf_wrap(*string, (size_t)lenght + 1, format, arg);
+}