From f3079565844c34b5b50070a764526b6bb9805411 Mon Sep 17 00:00:00 2001
From: Justin Viiret <justin.viiret@intel.com>
Date: Tue, 24 Jan 2017 10:01:59 +1100
Subject: [PATCH] rose: do not combine fragments which squash groups

---
 src/rose/rose_build_bytecode.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/rose/rose_build_bytecode.cpp b/src/rose/rose_build_bytecode.cpp
index 6f996979..c87946f2 100644
--- a/src/rose/rose_build_bytecode.cpp
+++ b/src/rose/rose_build_bytecode.cpp
@@ -4667,6 +4667,12 @@ map<u32, u32> groupByFragment(const RoseBuildImpl &build) {
             continue;
         }
 
+        // Combining fragments that squash their groups is unsafe.
+        if (info.squash_group) {
+            final_to_frag.emplace(final_id, frag_id++);
+            continue;
+        }
+
         DEBUG_PRINTF("fragment candidate: final_id=%u %s\n", final_id,
                      dumpString(lit.s).c_str());
         auto frag = getFragment(lit);