1 files changed, 36 insertions, 0 deletions
diff --git a/gnu/packages/patches/icedtea-7-hotspot-pointer-comparison.patch b/gnu/packages/patches/icedtea-7-hotspot-pointer-comparison.patch
new file mode 100644
index 0000000000..deb305bd96
--- /dev/null
+++ b/gnu/packages/patches/icedtea-7-hotspot-pointer-comparison.patch
@@ -0,0 +1,36 @@
+Avoid ordered comparison of pointer with integer to prevent compile error
+with GCC 11.
+
+diff --git a/src/share/vm/opto/lcm.cpp b/src/share/vm/opto/lcm.cpp
+--- a/src/share/vm/opto/lcm.cpp
++++ b/src/share/vm/opto/lcm.cpp
+@@ -60,7 +60,7 @@
+ // Check whether val is not-null-decoded compressed oop,
+ // i.e. will grab into the base of the heap if it represents NULL.
+ static bool accesses_heap_base_zone(Node *val) {
+-  if (Universe::narrow_oop_base() > 0) { // Implies UseCompressedOops.
++  if (Universe::narrow_oop_base() != NULL) { // Implies UseCompressedOops.
+     if (val && val->is_Mach()) {
+       if (val->as_Mach()->ideal_Opcode() == Op_DecodeN) {
+         // This assumes all Decodes with TypePtr::NotNull are matched to nodes that
+diff --git a/src/share/vm/runtime/virtualspace.cpp b/src/share/vm/runtime/virtualspace.cpp
+--- a/src/share/vm/runtime/virtualspace.cpp
++++ b/src/share/vm/runtime/virtualspace.cpp
+@@ -527,7 +527,7 @@ ReservedHeapSpace::ReservedHeapSpace(size_t size, size_t alignment,
+                 (UseCompressedOops && (Universe::narrow_oop_base() != NULL) &&
+                  Universe::narrow_oop_use_implicit_null_checks()) ?
+                   lcm(os::vm_page_size(), alignment) : 0) {
+-  if (base() > 0) {
++  if (base() != NULL) {
+     MemTracker::record_virtual_memory_type((address)base(), mtJavaHeap);
+   }
+ 
+@@ -546,7 +546,7 @@ ReservedHeapSpace::ReservedHeapSpace(const size_t prefix_size,
+                 (UseCompressedOops && (Universe::narrow_oop_base() != NULL) &&
+                  Universe::narrow_oop_use_implicit_null_checks()) ?
+                   lcm(os::vm_page_size(), prefix_align) : 0) {
+-  if (base() > 0) {
++  if (base() != NULL) {
+     MemTracker::record_virtual_memory_type((address)base(), mtJavaHeap);
+   }
+