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--- src/runtime/mem_freebsd.c.orig 2017-11-22 01:33:59 UTC |
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+++ src/runtime/mem_freebsd.c |
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@@ -73,6 +73,11 @@ runtime·SysReserve(void *v, uintptr n, bool *reserved |
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return p; |
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} |
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|
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+enum |
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+{ |
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+ MAP_EXCL = 0x4000 |
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+}; |
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+ |
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void |
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runtime·SysMap(void *v, uintptr n, bool reserved, uint64 *stat) |
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{ |
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@@ -82,7 +87,7 @@ runtime·SysMap(void *v, uintptr n, bool reserved, uin |
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|
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// On 64-bit, we don't actually have v reserved, so tread carefully. |
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if(!reserved) { |
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- p = runtime·mmap(v, n, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0); |
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+ p = runtime·mmap(v, n, PROT_READ|PROT_WRITE, MAP_ANON|MAP_FIXED|MAP_EXCL|MAP_PRIVATE, -1, 0); |
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if(p == (void*)ENOMEM) |
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runtime·throw("runtime: out of memory"); |
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if(p != v) { |