forked from pool/java-1_8_0-openjdk
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# HG changeset patch
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# User kevinw
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# Date 1422481386 0
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# Node ID 62c4bd276cbe409c0cbc7632df1ed7eb33048fb3
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# Parent 9773891321c4267baf5fa067b6df4e83ff21b3a5
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8035938: Memory leak in JvmtiEnv::GetConstantPool
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Reviewed-by: sspitsyn, dcubed
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diff -r 9773891321c4 -r 62c4bd276cbe src/share/vm/prims/jvmtiClassFileReconstituter.hpp
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--- jdk8/hotspot/src/share/vm/prims/jvmtiClassFileReconstituter.hpp Thu Apr 23 09:10:15 2015 -0700
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+++ jdk8/hotspot/src/share/vm/prims/jvmtiClassFileReconstituter.hpp Wed Jan 28 21:43:06 2015 +0000
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@@ -68,11 +68,11 @@
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~JvmtiConstantPoolReconstituter() {
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if (_symmap != NULL) {
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- os::free(_symmap, mtClass);
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+ delete _symmap;
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_symmap = NULL;
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}
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if (_classmap != NULL) {
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- os::free(_classmap, mtClass);
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+ delete _classmap;
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_classmap = NULL;
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}
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}
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# HG changeset patch
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# User roland
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# Date 1425891593 -3600
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# Node ID 3816de51b5e7d6050584057fae5f2262dae53d7e
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# Parent 23bf458e359fed77978ec165b729527180904cd5
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8071731: Better scaling for C1
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Reviewed-by: kvn, iveresov
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diff -r 23bf458e359f -r 3816de51b5e7 src/share/vm/c1/c1_LIRGenerator.cpp
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--- jdk8/hotspot/src/share/vm/c1/c1_LIRGenerator.cpp Mon Mar 23 11:15:48 2015 -0700
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+++ jdk8/hotspot/src/share/vm/c1/c1_LIRGenerator.cpp Mon Mar 09 09:59:53 2015 +0100
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@@ -2204,7 +2204,15 @@
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if (log2_scale != 0) {
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// temporary fix (platform dependent code without shift on Intel would be better)
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// TODO: ARM also allows embedded shift in the address
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- __ shift_left(index_op, log2_scale, index_op);
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+ LIR_Opr tmp = new_pointer_register();
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+ if (TwoOperandLIRForm) {
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+ __ move(index_op, tmp);
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+ index_op = tmp;
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+ }
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+ __ shift_left(index_op, log2_scale, tmp);
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+ if (!TwoOperandLIRForm) {
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+ index_op = tmp;
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+ }
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}
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LIR_Address* addr = new LIR_Address(base_op, index_op, x->basic_type());
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# HG changeset patch
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# User vlivanov
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# Date 1429027828 -10800
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# Node ID 928e1994ad43272f808ca22b9cc1b08a7ce2824f
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# Parent 62c4bd276cbe409c0cbc7632df1ed7eb33048fb3
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8075838: Method for typing MethodTypes
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Reviewed-by: jrose, ahgross, alanb, bmoloden
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diff -r 62c4bd276cbe -r 928e1994ad43 src/share/vm/classfile/systemDictionary.cpp
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--- jdk8/hotspot/src/share/vm/classfile/systemDictionary.cpp Wed Jan 28 21:43:06 2015 +0000
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+++ jdk8/hotspot/src/share/vm/classfile/systemDictionary.cpp Tue Apr 14 19:10:28 2015 +0300
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@@ -2349,9 +2349,6 @@
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assert(!THREAD->is_Compiler_thread(), "");
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Handle method_type =
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SystemDictionary::find_method_handle_type(signature, accessing_klass, CHECK_(empty));
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- if (false) { // FIXME: Decide if the Java upcall should resolve signatures.
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- method_type = java_lang_String::create_from_symbol(signature, CHECK_(empty));
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- }
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KlassHandle mh_klass = SystemDictionary::MethodHandle_klass();
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int ref_kind = JVM_REF_invokeVirtual;
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@@ -2383,6 +2380,24 @@
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return unpack_method_and_appendix(mname, accessing_klass, appendix_box, appendix_result, THREAD);
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}
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+// Decide if we can globally cache a lookup of this class, to be returned to any client that asks.
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+// We must ensure that all class loaders everywhere will reach this class, for any client.
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+// This is a safe bet for public classes in java.lang, such as Object and String.
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+// We also include public classes in java.lang.invoke, because they appear frequently in system-level method types.
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+// Out of an abundance of caution, we do not include any other classes, not even for packages like java.util.
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+static bool is_always_visible_class(oop mirror) {
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+ Klass* klass = java_lang_Class::as_Klass(mirror);
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+ if (klass->oop_is_objArray()) {
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+ klass = ObjArrayKlass::cast(klass)->bottom_klass(); // check element type
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+ }
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+ if (klass->oop_is_typeArray()) {
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+ return true; // primitive array
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+ }
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+ assert(klass->oop_is_instance(), klass->external_name());
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+ return klass->is_public() &&
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+ (InstanceKlass::cast(klass)->is_same_class_package(SystemDictionary::Object_klass()) || // java.lang
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+ InstanceKlass::cast(klass)->is_same_class_package(SystemDictionary::MethodHandle_klass())); // java.lang.invoke
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+}
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// Ask Java code to find or construct a java.lang.invoke.MethodType for the given
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// signature, as interpreted relative to the given class loader.
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@@ -2405,32 +2420,33 @@
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}
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Handle class_loader, protection_domain;
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- bool is_on_bcp = true; // keep this true as long as we can materialize from the boot classloader
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+ if (accessing_klass.not_null()) {
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+ class_loader = Handle(THREAD, InstanceKlass::cast(accessing_klass())->class_loader());
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+ protection_domain = Handle(THREAD, InstanceKlass::cast(accessing_klass())->protection_domain());
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+ }
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+ bool can_be_cached = true;
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int npts = ArgumentCount(signature).size();
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objArrayHandle pts = oopFactory::new_objArray(SystemDictionary::Class_klass(), npts, CHECK_(empty));
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int arg = 0;
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- Handle rt; // the return type from the signature
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+ Handle rt; // the return type from the signature
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ResourceMark rm(THREAD);
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for (SignatureStream ss(signature); !ss.is_done(); ss.next()) {
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oop mirror = NULL;
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- if (is_on_bcp) {
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- // Note: class_loader & protection_domain are both null at this point.
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- mirror = ss.as_java_mirror(class_loader, protection_domain,
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+ if (can_be_cached) {
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+ // Use neutral class loader to lookup candidate classes to be placed in the cache.
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+ mirror = ss.as_java_mirror(Handle(), Handle(),
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SignatureStream::ReturnNull, CHECK_(empty));
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- if (mirror == NULL) {
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- // fall back from BCP to accessing_klass
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- if (accessing_klass.not_null()) {
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- class_loader = Handle(THREAD, InstanceKlass::cast(accessing_klass())->class_loader());
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- protection_domain = Handle(THREAD, InstanceKlass::cast(accessing_klass())->protection_domain());
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- }
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- is_on_bcp = false;
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+ if (mirror == NULL || (ss.is_object() && !is_always_visible_class(mirror))) {
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+ // Fall back to accessing_klass context.
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+ can_be_cached = false;
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}
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}
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- if (!is_on_bcp) {
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+ if (!can_be_cached) {
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// Resolve, throwing a real error if it doesn't work.
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mirror = ss.as_java_mirror(class_loader, protection_domain,
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SignatureStream::NCDFError, CHECK_(empty));
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}
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+ assert(!oopDesc::is_null(mirror), ss.as_symbol(THREAD)->as_C_string());
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if (ss.at_return_type())
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rt = Handle(THREAD, mirror);
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else
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@@ -2462,7 +2478,7 @@
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&args, CHECK_(empty));
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Handle method_type(THREAD, (oop) result.get_jobject());
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- if (is_on_bcp) {
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+ if (can_be_cached) {
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// We can cache this MethodType inside the JVM.
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MutexLocker ml(SystemDictionary_lock, THREAD);
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spe = invoke_method_table()->find_entry(index, hash, signature, null_iid);
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@ -228,10 +228,6 @@ Patch15: cplusplus-interpreter.patch
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# Fix crash on zero virtual machine built with gcc5
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# Fix crash on zero virtual machine built with gcc5
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Patch16: zero-dummy.patch
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Patch16: zero-dummy.patch
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# July 2015 security fixes backported to aarch64 hotspot
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# July 2015 security fixes backported to aarch64 hotspot
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# 8071731: Better scaling for C1
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Patch20: aarch64-8071731.patch
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# 8075838: Method for typing MethodTypes
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Patch21: aarch64-8075838.patch
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#
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#
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# OpenJDK specific patches
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# OpenJDK specific patches
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#
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#
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@ -535,11 +531,6 @@ rm -rvf jdk/src/share/native/sun/java2d/cmm/lcms/lcms2*
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%patch15 -p1
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%patch15 -p1
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%endif
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%endif
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%ifarch %aarch64
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%patch20 -p1
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%patch21 -p1
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%endif
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%patch99 -p1
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%patch99 -p1
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# s390 build fixes
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# s390 build fixes
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