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authorFlorian Weimer <fweimer@redhat.com>2016-10-26 13:28:28 +0200
committerFlorian Weimer <fweimer@redhat.com>2016-10-26 13:28:28 +0200
commite863cce57bff6cb795e6aad745ddf6235bca21ce (patch)
treef78710ceea98240dd4676f6891d68d05241de1db /NEWS
parent261e6758e7229aa4c17546b52b002ca9f1b0a67d (diff)
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malloc: Remove malloc_get_state, malloc_set_state [BZ #19473]
After the removal of __malloc_initialize_hook, newly compiled Emacs binaries are no longer able to use these interfaces. malloc_get_state is only used during the Emacs build process, so we provide a stub implementation only. Existing Emacs binaries will not call this stub function, but still reference the symbol. The rewritten tst-mallocstate test constructs a dumped heap which should approximates what existing Emacs binaries pass to glibc malloc.
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diff --git a/NEWS b/NEWS
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@@ -67,6 +67,14 @@ Version 2.25
for the Linux quota interface which predates kernel version 2.4.22 has
been removed.
+* The malloc_get_state and malloc_set_state functions have been removed.
+ Already-existing binaries that dynamically link to these functions will
+ get a hidden implementation in which malloc_get_state is a stub. As far
+ as we know, these functions are used only by GNU Emacs and this change
+ will not adversely affect already-built Emacs executables. Any undumped
+ Emacs executables, which normally exist only during an Emacs build, should
+ be rebuilt by re-running “./configure; make” in the Emacs build tree.
+
* The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
“no-ip6-dotint” had already been the default, and support for the