wrap MAP_FIXED_NOREPLACE in an ifdef
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@ -45,8 +45,11 @@ static void* mmap_nvm(u64 sz) {
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u64 randOff = wyrand(&nvm_mmap_seed) & (MAX_DIST>>1)-1;
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u64 loc = near+randOff & ~(ps-1);
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// printf("request %d: %p\n", attempt, (void*)loc);
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void* c = mmap((void*)loc, sz, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_NORESERVE|MAP_PRIVATE|MAP_ANON|MAP_FIXED_NOREPLACE, -1, 0);
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int noreplace = 0;
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#ifdef MAP_FIXED_NOREPLACE
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noreplace|= MAP_FIXED_NOREPLACE;
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#endif
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void* c = mmap((void*)loc, sz, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_NORESERVE|MAP_PRIVATE|MAP_ANON|noreplace, -1, 0);
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if (c==NULL) continue;
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i64 dist = (i64)near - (i64)c;
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