Protected all concurrent accesses to sources and destinations of instructions.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/analysis/blocks/flow.c b/src/analysis/blocks/flow.c
index 9eb9de8..bc14648 100644
--- a/src/analysis/blocks/flow.c
+++ b/src/analysis/blocks/flow.c
@@ -574,6 +574,7 @@ bool g_flow_block_is_looping_to(GFlowBlock *block, const GInstrBlock *list, GFlo
 
     result = (block == target);
 
+    g_arch_instruction_rlock_dest(block->last);
     dcount = g_arch_instruction_get_destinations(block->last, &dests, &types, NULL);
 
     for (i = 0; i < dcount && !result; i++)
@@ -598,6 +599,8 @@ bool g_flow_block_is_looping_to(GFlowBlock *block, const GInstrBlock *list, GFlo
 
         }
 
+    g_arch_instruction_runlock_dest(block->last);
+
     return result;
 
 }
@@ -634,6 +637,7 @@ bool g_flow_block_follow(GFlowBlock *block, const GInstrBlock *list, BlockFollow
     if (mask & BFP_ENTER)
         result = callback(block, BFP_ENTER, data);
 
+    g_arch_instruction_rlock_dest(block->last);
     dcount = g_arch_instruction_get_destinations(block->last, &dests, &types, NULL);
 
     for (i = 0; i < dcount && result; i++)
@@ -661,6 +665,8 @@ bool g_flow_block_follow(GFlowBlock *block, const GInstrBlock *list, BlockFollow
 
         }
 
+    g_arch_instruction_runlock_dest(block->last);
+
     if (mask & BFP_EXIT)
         result &= callback(block, BFP_EXIT, data);