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Diffstat (limited to 'MdeModulePkg/Universal/StatusCodeHandler/Pei/SerialStatusCodeWorker.c')
-rw-r--r--MdeModulePkg/Universal/StatusCodeHandler/Pei/SerialStatusCodeWorker.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/MdeModulePkg/Universal/StatusCodeHandler/Pei/SerialStatusCodeWorker.c b/MdeModulePkg/Universal/StatusCodeHandler/Pei/SerialStatusCodeWorker.c
index cbc848170e..e7bbcf4871 100644
--- a/MdeModulePkg/Universal/StatusCodeHandler/Pei/SerialStatusCodeWorker.c
+++ b/MdeModulePkg/Universal/StatusCodeHandler/Pei/SerialStatusCodeWorker.c
@@ -94,7 +94,9 @@ SerialStatusCodeReportWorker (
Value,
Instance
);
-
+
+ ASSERT(CharCount > 0);
+
if (CallerId != NULL) {
CharCount += AsciiSPrint (
&Buffer[CharCount - 1],