Replace --disable-munmap with opt.munmap.
Control use of munmap(2) via a run-time option rather than a compile-time option (with the same per platform default). The old behavior of --disable-munmap can be achieved with --with-malloc-conf=munmap:false. This partially resolves #580.
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@@ -251,8 +251,8 @@ TEST_BEGIN(test_arena_destroy_hooks_default) {
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TEST_END
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/*
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* Actually unmap extents, regardless of config_munmap, so that attempts to
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* access a destroyed arena's memory will segfault.
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* Actually unmap extents, regardless of opt_munmap, so that attempts to access
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* a destroyed arena's memory will segfault.
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*/
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static bool
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extent_dalloc_unmap(extent_hooks_t *extent_hooks, void *addr, size_t size,
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@@ -131,7 +131,6 @@ TEST_BEGIN(test_mallctl_config) {
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TEST_MALLCTL_CONFIG(fill, bool);
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TEST_MALLCTL_CONFIG(lazy_lock, bool);
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TEST_MALLCTL_CONFIG(malloc_conf, const char *);
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TEST_MALLCTL_CONFIG(munmap, bool);
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TEST_MALLCTL_CONFIG(prof, bool);
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TEST_MALLCTL_CONFIG(prof_libgcc, bool);
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TEST_MALLCTL_CONFIG(prof_libunwind, bool);
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@@ -158,6 +157,7 @@ TEST_BEGIN(test_mallctl_opt) {
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} while (0)
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TEST_MALLCTL_OPT(bool, abort, always);
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TEST_MALLCTL_OPT(bool, munmap, always);
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TEST_MALLCTL_OPT(const char *, dss, always);
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TEST_MALLCTL_OPT(unsigned, narenas, always);
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TEST_MALLCTL_OPT(const char *, percpu_arena, always);
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