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introduce ZSTD_USE_C90_QSORT

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This commit is contained in:
Yann Collet 2025-02-21 11:36:30 -08:00
parent 8ff47f3df0
commit ebfa660b82
2 changed files with 9 additions and 8 deletions
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2
.github/workflows/dev-short-tests.yml vendored
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@ -693,7 +693,7 @@ jobs:
sudo apt install -y musl-tools
- name: Compile the project with musl-gcc
run: |
CC=musl-gcc make -j V=1 zstd
CC=musl-gcc CPPFLAGS=-DZSTD_USE_C90_QSORT make -j V=1 zstd
intel-cet-compatibility:
runs-on: ubuntu-latest

15
lib/dictBuilder/cover.c
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@ -24,9 +24,9 @@
/* qsort_r is an extension. */
#if defined(__linux) || defined(__linux__) || defined(linux) || defined(__gnu_linux__) || \
defined(__CYGWIN__) || defined(__MSYS__)
#if !defined(_GNU_SOURCE) && !defined(__ANDROID__) /* NDK doesn't ship qsort_r(). */
#define _GNU_SOURCE
#endif
# if !defined(_GNU_SOURCE) && !defined(__ANDROID__) /* NDK doesn't ship qsort_r(). */
# define _GNU_SOURCE
# endif
#endif
#include <stdio.h> /* fprintf */
@ -241,8 +241,9 @@ typedef struct {
unsigned d;
} COVER_ctx_t;
#if !defined(_GNU_SOURCE) && !defined(__APPLE__) && !defined(_MSC_VER)
/* C90 only offers qsort() that needs a global context. */
#if defined(ZSTD_USE_C90_QSORT) \
|| (!defined(_GNU_SOURCE) && !defined(__APPLE__) && !defined(_MSC_VER))
/* Use global context for non-reentrant sort functions */
static COVER_ctx_t *g_coverCtx = NULL;
#endif
@ -328,7 +329,7 @@ static void stableSort(COVER_ctx_t *ctx) {
qsort_r(ctx->suffix, ctx->suffixSize, sizeof(U32),
ctx,
(ctx->d <= 8 ? &COVER_strict_cmp8 : &COVER_strict_cmp));
#elif defined(_GNU_SOURCE)
#elif defined(_GNU_SOURCE) && !defined(ZSTD_USE_C90_QSORT)
qsort_r(ctx->suffix, ctx->suffixSize, sizeof(U32),
(ctx->d <= 8 ? &COVER_strict_cmp8 : &COVER_strict_cmp),
ctx);
@ -342,7 +343,7 @@ static void stableSort(COVER_ctx_t *ctx) {
(ctx->d <= 8 ? &COVER_strict_cmp8 : &COVER_strict_cmp));
#else /* C90 fallback.*/
g_coverCtx = ctx;
/* TODO(cavalcanti): implement a reentrant qsort() when is not available. */
/* TODO(cavalcanti): implement a reentrant qsort() when _r is not available. */
qsort(ctx->suffix, ctx->suffixSize, sizeof(U32),
(ctx->d <= 8 ? &COVER_strict_cmp8 : &COVER_strict_cmp));
#endif