FreeCalypso > hg > freecalypso-tools

annotate libserial-posix/setbyname.c @ 965:2969032bdfac

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fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing The only 100% safe way to pass a NULL pointer as a function argument in K&R C is to cast 0 to a pointer type; failing to do so may cause mysterious bugs (invalid stack frames or garbage in argument registers) on 64-bit machines. This issue has already been fixed in most of FC host tools, but I just found some missed spots: passing of NULL UDH to PDU encoding functions in fcup-smsend[mult] in the case of single (not concatenated) SMS.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 01 Sep 2023 07:33:51 +0000
parents fd7b447b99e3
children
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1 /*
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2 * This module contains the wrapper function (used by loadtools)
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3 * that looks up a baud rate by name and calls set_serial_baud().
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4 */
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5
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include "baudrate.h"
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9
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10 extern struct baudrate *find_baudrate_by_name();
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11
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12 set_fixed_baudrate(baudname)
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13 char *baudname;
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14 {
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15 struct baudrate *br;
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16
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17 br = find_baudrate_by_name(baudname);
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18 if (!br)
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19 exit(1); /* error msg already printed */
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20 set_serial_baudrate(br);
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21 }