IVGCVSW-4776 Warn when MIN_STATIC_GUID is returned from GenerateStaticId multiple times.

* Modify StaticGuidGeneratorCollisionTest to identify cases where
  MIN_STATIC_GUID has been returned from GenerateStaticId more than once.
  Output a warning rather than an error as this can happen on 32bit
  systems.

Signed-off-by: Colm Donelan <Colm.Donelan@arm.com>
Change-Id: I47e9a1d9ff09c25da24abb4b0efe63d3000aa1c5

1 files changed, 11 insertions, 1 deletions

diff --git a/src/profiling/test/ProfilingGuidTest.cpp b/src/profiling/test/ProfilingGuidTest.cpp
index b8f6b88479..392833a364 100644
--- a/src/profiling/test/ProfilingGuidTest.cpp
+++ b/src/profiling/test/ProfilingGuidTest.cpp
@@ -90,7 +90,17 @@ BOOST_AUTO_TEST_CASE(StaticGuidGeneratorCollisionTest)
         ProfilingStaticGuid guid = generator.GenerateStaticId(str.c_str());
         if (guids.find(guid) != guids.end())
         {
-            BOOST_ERROR(boost::str(boost::format("GUID collision occurred: %1% -> %2%") % str % guid));
+            // If we're running on a 32bit system it is more likely to get a GUID clash over 1 million executions.
+            // We can generally detect this when the GUID turns out to be MIN_STATIC_GUID. Output a warning
+            // message rather than error in this case.
+            if (guid == ProfilingGuid(armnn::profiling::MIN_STATIC_GUID))
+            {
+                BOOST_WARN("MIN_STATIC_GUID returned more than once from GenerateStaticId.");
+            } 
+            else
+            {
+                BOOST_ERROR(boost::str(boost::format("GUID collision occurred: %1% -> %2%") % str % guid));
+            }
             break;
         }
         guids.insert(guid);