From be3047911075b2e917d73451068e0b84373eefb9 Mon Sep 17 00:00:00 2001
From: Marco Paland <marco@paland.com>
Date: Tue, 21 Aug 2018 13:13:13 +0200
Subject: fix(printf): fix trailing field width in itoa conversion

Fixes #21
---
 printf.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'printf.c')

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);
     }
   }
-- 
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