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@@ -0,0 +1,45 @@
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+# HG changeset patch
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+# User Bill Gianopoulos <wgianopoulos@gmail.com>
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+# Date 1622556869 14400
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+# Tue Jun 01 10:14:29 2021 -0400
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+bug 9999999 - Remove getentrpy depndecy in --enable-stdcxx-compat builds.
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+
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+diff --git a/build/unix/stdc++compat/stdc++compat.cpp b/build/unix/stdc++compat/stdc++compat.cpp
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+--- a/build/unix/stdc++compat/stdc++compat.cpp
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++++ b/build/unix/stdc++compat/stdc++compat.cpp
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+@@ -6,16 +6,17 @@
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+ #include <istream>
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+ #include <sstream>
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+ #include <memory>
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+ #include <string>
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+ #include <stdarg.h>
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+ #include <stdio.h>
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+ #include <mozilla/Assertions.h>
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+ #include <cxxabi.h>
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++#include <errno.h>
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+
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+ /*
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+ GLIBCXX_3.4.19 is from gcc 4.8.1 (199309)
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+ GLIBCXX_3.4.20 is from gcc 4.9.0 (199307)
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+ GLIBCXX_3.4.21 is from gcc 5.0 (210290)
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+ GLIBCXX_3.4.22 is from gcc 6.0 (222482)
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+ GLIBCXX_3.4.23 is from gcc 7
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+ GLIBCXX_3.4.24 is from gcc 8
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+@@ -195,8 +196,17 @@ basic_string<wchar_t, char_traits<wchar_
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+ * implementation).
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+ * The __cxa_thread_atexit symbol itself is marked CXXABI_1.3.7, which is
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+ * equivalent to GLIBCXX_3.4.18.
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+ */
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+ extern "C" int __cxa_thread_atexit_impl(void (*dtor)(void*), void* obj,
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+ void* dso_handle) {
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+ return __cxxabiv1::__cxa_thread_atexit(dtor, obj, dso_handle);
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+ }
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++/* The getentropy symbol is only available on GLIBC 2.25, but we
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++ * want things to keep working on 2.17.
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++ */
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++extern "C" int
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++getentropy (void *buffer, size_t length)
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++{
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++ __set_errno (ENOSYS);
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++ return -1;
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++}
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Bill Gianopoulos