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changeset 540:a3e3b26accd5

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Add comment about minimum buffer size requirement.
author Matti Hamalainen <ccr@tnsp.org>
date Mon, 30 Dec 2019 15:18:55 +0200
parents 7615dbdc4d34
children a5fb0d95a51f
files th_printf1.c
diffstat 1 files changed, 3 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/th_printf1.c	Mon Dec 30 15:16:04 2019 +0200
+++ b/th_printf1.c	Mon Dec 30 15:18:55 2019 +0200
@@ -35,14 +35,17 @@
     if (val == 0)
         return 0;
 
+    // We assume that the output buffer is at least 2 bytes long
     *pos = 0;
     do
     {
         TH_PFUNC_TYPE_U digit = val % f_radix;
+
         if (digit < 10)
             buf[*pos] = '0' + digit;
         else
             buf[*pos] = (f_upcase ? 'A' : 'a') + digit - 10;
+
         val /= f_radix;
         (*pos)++;
     }