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comparison th_printf.c @ 704:b6b8e7249666

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Check that the buffer length is >= 1 before trying to access buf[len - 1]
author Matti Hamalainen <ccr@tnsp.org>
date Sun, 26 Apr 2020 23:34:21 +0300
parents 284d5b789b7c
children 4ca6a3b30fe8
comparison
equal deleted inserted replaced
703:dbc71c000376 704:b6b8e7249666
119 (void) vret; 119 (void) vret;
120 (void) flags; 120 (void) flags;
121 (void) prec; 121 (void) prec;
122 122
123 // This is not very nice 123 // This is not very nice
124 if (buf[len - 1] != '0') 124 if (len < 1 || buf[len - 1] != '0')
125 { 125 {
126 if (*prec > 0) 126 if (*prec > 0)
127 (*prec)--; 127 (*prec)--;
128 128
129 *outlen = 1; 129 *outlen = 1;