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added enum size check

David Rebbe 2024-11-25 20:22:25 -05:00
parent b0f504a731
commit 8e3b12cdd0
1 changed files with 17 additions and 1 deletions
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18
include/icsneo/icsneotypes.h
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@ -1,5 +1,10 @@
#pragma once #pragma once
// _Static_assert support, this can be removed once C23 is the "standard"
#if __STDC_VERSION__ < 202311L && !defined(__cplusplus)
#include <assert.h>
#endif
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {
#endif #endif
@ -128,9 +133,20 @@ typedef enum _icsneo_devicetype_t {
icsneo_devicetype_vividcan, icsneo_devicetype_vividcan,
// neoOBD2 SIM // neoOBD2 SIM
icsneo_devicetype_obd2_sim, icsneo_devicetype_obd2_sim,
// Must be last entry
icsneo_devicetype_maxsize,
} _icsneo_devicetype_t; } _icsneo_devicetype_t;
typedef uint64_t icsneo_devicetype_t; typedef uint32_t icsneo_devicetype_t;
// Make sure icsneo_devicetype_t is never smaller than the actual enum
#if __STDC_VERSION__ < 202311L && !defined(__cplusplus)
_Static_assert(sizeof(_icsneo_devicetype_t) <= sizeof(icsneo_devicetype_t));
#else // C++ or C23
static_assert(sizeof(_icsneo_devicetype_t) <= sizeof(icsneo_devicetype_t));
#endif
#ifdef __cplusplus #ifdef __cplusplus
} }