44994a46d4
FreeBSD (and also Darwin) introduced its own qsort_r, which has different semantics than the one slated for inclusion in POSIX. Add a portability thunk to deal with translating between implementations. [TT: minor stylistic fixes]
33 lines
903 B
C
33 lines
903 B
C
#pragma once
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#include_next <stdlib.h>
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#ifdef NEED_QSORT_R
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void qsort_r(void *base, size_t nmemb, size_t size,
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int (*compar)(const void *, const void *, void *),
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void *arg);
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#endif
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#ifdef HAVE_BROKEN_QSORT_R
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struct __portable_qsort_r_compat_arg {
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int (*compar)(const void *, const void *, void *);
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void *arg;
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};
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static inline int __portable_qsort_r_compar_compat(void *arg, const void *a, const void *b)
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{
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struct __portable_qsort_r_compat_arg *compat_arg = arg;
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return compat_arg->compar(a, b, compat_arg->arg);
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}
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static inline void __portable_qsort_r(void *base, size_t nmemb, size_t size,
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int (*compar)(const void *, const void *, void *),
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void *arg)
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{
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struct __portable_qsort_r_compat_arg compat_arg = {
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.compar = compar,
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.arg = arg,
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};
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qsort_r(base, nmemb, size, &compat_arg, __portable_qsort_r_compar_compat);
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}
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#define qsort_r(...) __portable_qsort_r(__VA_ARGS__)
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#endif
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