guix-devel/gnu/packages/patches/icedtea-7-hotspot-gcc-segfault-workaround.patch

From 2f0ef2c69e99e1096a2a72c7a29025a736b044b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?G=C3=A1bor=20Boskovits?= <boskovits@gmail.com>
Date: Mon, 2 Jul 2018 23:37:25 +0200
Subject: [PATCH] Fix gcc segfault.

---
 src/share/vm/opto/output.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/share/vm/opto/output.cpp b/src/share/vm/opto/output.cpp
index d46cb87..0eb9eda 100644
--- a/src/share/vm/opto/output.cpp
+++ b/src/share/vm/opto/output.cpp
@@ -1787,6 +1787,8 @@ uint Scheduling::_total_instructions_per_bundle[Pipeline::_max_instrs_per_cycle+
 
 // Initializer for class Scheduling
 
+volatile const void *eePointer = Pipeline_Use::elaborated_elements;
+
 Scheduling::Scheduling(Arena *arena, Compile &compile)
   : _arena(arena),
     _cfg(compile.cfg()),
@@ -1829,7 +1831,7 @@ Scheduling::Scheduling(Arena *arena, Compile &compile)
   memset(_current_latency,    0, node_max * sizeof(unsigned short));
 
   // Clear the bundling information
-  memcpy(_bundle_use_elements, Pipeline_Use::elaborated_elements, sizeof(Pipeline_Use::elaborated_elements));
+  memcpy(_bundle_use_elements, (void *)eePointer, 11*sizeof(Pipeline_Use_Element));
 
   // Get the last node
   Block* block = _cfg->get_block(_cfg->number_of_blocks() - 1);
@@ -1880,8 +1882,8 @@ void Scheduling::step_and_clear() {
   _bundle_use.reset();
 
   memcpy(_bundle_use_elements,
-    Pipeline_Use::elaborated_elements,
-    sizeof(Pipeline_Use::elaborated_elements));
+	 (void *)eePointer,
+    11*sizeof(Pipeline_Use_Element));
 }
 
 // Perform instruction scheduling and bundling over the sequence of
-- 
2.18.0