fix(printf): fix trailing field width in itoa conversion

Fixes #21

1 files changed, 3 insertions, 1 deletions

diff --git a/printf.c b/printf.c
index c28cf13..e4c83e5 100644
--- a/printf.c
+++ b/printf.c
@@ -151,6 +151,8 @@ static inline unsigned int _atoi(const char** str)
 // internal itoa format

 static size_t _ntoa_format(out_fct_type out, char* buffer, size_t idx, size_t maxlen, char* buf, size_t len, bool negative, unsigned int base, unsigned int prec, unsigned int width, unsigned int flags)

 {

+  const size_t start_idx = idx;

+

   // pad leading zeros

   while (!(flags & FLAGS_LEFT) && (len < prec) && (len < PRINTF_NTOA_BUFFER_SIZE)) {

     buf[len++] = '0';

@@ -208,7 +210,7 @@ static size_t _ntoa_format(out_fct_type out, char* buffer, size_t idx, size_t ma
 

   // append pad spaces up to given width

   if (flags & FLAGS_LEFT) {

-    while (idx < width) {

+    while (idx - start_idx < width) {

       out(' ', buffer, idx++, maxlen);

     }

   }