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Fix: MSVC C23 bool typedef causes an error #2320

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merged 1 commit into from
Jul 23, 2025
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Fix: MSVC C23 bool typedef causes an error #2320

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19 changes: 11 additions & 8 deletions include/czmq_prelude.h
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Original file line number Diff line number Diff line change
Expand Up @@ -529,17 +529,20 @@ typedef struct {
// That's it about the randof() macro definition...


// Windows MSVS doesn't have stdbool
#if (defined (_MSC_VER))
# if (!defined (__cplusplus) && (!defined (true)))
# define true 1
# define false 0
typedef char bool;
// Fallback for booleans for pre-C23 C and MSVC builds
#if defined(__STDC_VERSION__) && __STDC_VERSION__ < 202311L
# if (defined (_MSC_VER))
# if (!defined (__cplusplus) && (!defined (true)))
# define true 1
# define false 0
typedef char bool;
# endif
# else
# include <stdbool.h>
# endif
#else
# include <stdbool.h>
#endif


//- A number of POSIX and C99 keywords and data types -----------------------
// CZMQ uses uint for array indices; equivalent to unsigned int, but more
// convenient in code. We define it in czmq_prelude.h on systems that do
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