If the function gets invalid value for the `ResizableBarOp` parameter
and asserts are disabled, `Bit` can be used uninitialized.
Cc: Jian J Wang <jian.j.w...@intel.com>
Cc: Hao A Wu <hao.a...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Signed-off-by: Sergei Dmitrouk <ser...@posteo.net>
---
MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c
b/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c
index 6bba28367165..de601713a53b 100644
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c
@@ -1781,6 +1781,11 @@ PciProgramResizableBar (
} else if (ResizableBarOp == PciResizableBarMin) {
Bit = LowBitSet64(Capabilities);
} else {
+ //
+ // Set Bit to avoid uninitialized use when built without assertions.
+ //
+ Bit = 0;
+
ASSERT ((ResizableBarOp == PciResizableBarMax) || (ResizableBarOp ==
PciResizableBarMin));
}
--
2.17.6
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