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char8_t: support glibc <2.36 #163

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char8_t: support glibc <2.36 #163

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5 changes: 5 additions & 0 deletions c/include/nvtx3/nvtxDetail/nvtxExtPayloadTypeInfo.h
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,11 @@ typedef void* nvtx_payload_pointer_type;

/* `char8_t` is available as of C++20 or C23 */
#if ((defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202311L) || (defined(__cplusplus) && __cplusplus >= 201811L)) && !defined(__APPLE__)
/* Fallback for systems where glibc < 2.36 does not define char8_t
* in uchar.h even when the compiler supports C23 (e.g. RHEL 9). */
#ifndef __cpp_char8_t
typedef unsigned char char8_t;
#endif
#define NVTX_HAVE_CHAR8 1
#else
#define NVTX_HAVE_CHAR8 0
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