2 files changed, 8 insertions, 2 deletions
diff --git a/src/common/stdin.c b/src/common/stdin.c
index a460247..c4bf746 100644
--- a/src/common/stdin.c
+++ b/src/common/stdin.c
@@ -14,11 +14,15 @@
 
 // splitted in single file to make it easier to test
 char*
-bc_stdin_read(void)
+bc_stdin_read(size_t *len)
 {
+    if (len == NULL)
+        return NULL;
+
     int c;
     bc_string_t *rv = bc_string_new();
     while (EOF != (c = fgetc(stdin)))
         bc_string_append_c(rv, c);
+    *len = rv->len;
     return bc_string_free(rv, false);
 }
diff --git a/src/common/stdin.h b/src/common/stdin.h
index e6bd7a0..be99922 100644
--- a/src/common/stdin.h
+++ b/src/common/stdin.h
@@ -9,6 +9,8 @@
 #ifndef _STDIN_H
 #define _STDIN_H
 
-char* bc_stdin_read(void);
+#include <stddef.h>
+
+char* bc_stdin_read(size_t *len);
 
 #endif /* _STDIN_H */