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fix: add u_char/u_short/u_int typedefs for GCC 15 / C23 compatibility #306

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fix: add u_char/u_short/u_int typedefs for GCC 15 / C23 compatibility #306

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17970a0
fix: add u_char/u_short/u_int typedefs for GCC 15 / C23 compatibility
texasich May 7, 2026
84ee12d
docs: add upstream libpcap C23 compat issue link to typedef comment
texasich May 11, 2026
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14 changes: 14 additions & 0 deletions src/decpcap.h
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,20 @@
#ifndef __DECPCAP_H
#define __DECPCAP_H

/* Compatibility typedefs — u_char/u_short/u_int were removed
from <sys/types.h> in C23 (GCC 15 default -std=gnu23).
Must come before <pcap.h> because libpcap uses these types.
Upstream libpcap C23 compat: https://github.com/the-tcpdump-group/libpcap/issues/1679 */
#ifndef u_char
typedef unsigned char u_char;
#endif
#ifndef u_short
typedef unsigned short u_short;
#endif
#ifndef u_int
typedef unsigned int u_int;
#endif

#include <pcap.h>
#include <stdbool.h>
#include <stdio.h>
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