THUAI6/CAPI/cpp/grpc/include/upb/internal/vsnprintf_compat.h

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#ifndef UPB_INTERNAL_VSNPRINTF_COMPAT_H_
#define UPB_INTERNAL_VSNPRINTF_COMPAT_H_

#include <stdio.h>

// Must be last.
#include "upb/port_def.inc"

UPB_INLINE int _upb_vsnprintf(char* buf, size_t size, const char* fmt, va_list ap)
{
#if defined(__MINGW64__) || defined(__MINGW32__) || defined(_MSC_VER)
    // The msvc runtime has a non-conforming vsnprintf() that requires the
    // following compatibility code to become conformant.
    int n = -1;
    if (size != 0)
        n = _vsnprintf_s(buf, size, _TRUNCATE, fmt, ap);
    if (n == -1)
        n = _vscprintf(fmt, ap);
    return n;
#else
    return vsnprintf(buf, size, fmt, ap);
#endif
}

#include "upb/port_undef.inc"

#endif  // UPB_INTERNAL_VSNPRINTF_COMPAT_H_