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MREMAP is unimplemented on GNU/Hurd for now
--- a/bits/mman.h
+++ b/bits/mman.h
@@ -85,10 +85,12 @@
#define MS_INVALIDATE 2 /* Invalidate the caches. */
/* Flags for `mremap'. */
+#if 0
#ifdef __USE_GNU
# define MREMAP_MAYMOVE 1 /* Mapping address may change. */
# define MREMAP_FIXED 2 /* Fifth argument sets new address. */
#endif
+#endif
/* Flags for `mlockall' (can be OR'd together). */
#define MCL_CURRENT 1 /* Lock all currently mapped pages. */
--- a/malloc/memusage.c
+++ b/malloc/memusage.c
@@ -680,6 +680,9 @@ mmap64 (void *start, size_t len, int pro
return result;
}
+#ifndef MREMAP_FIXED
+#define MREMAP_FIXED 0
+#endif
/* `mremap' replacement. We do not have to keep track of the size since
`munmap' will get it as a parameter. */
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