Older GCC (<= 4.9) fail to infer that Parent is never used unless it
has been assigned before, and may throw an error like
/work/git/edk2/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c:
In function ‘PlatformPeim’:
/work/git/edk2/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c:132:24:
error: ‘Parent’ may be used uninitialized in this function
[-Werror=maybe-uninitialized]
RangesProp = fdt_getprop (Base, Parent, "ranges", &RangesLen);
Set Parent to 0 at the start of the sequence to work around this.
Link: https://bugzilla.tianocore.org/show_bug.cgi?id=2601
Fixes: 82662a3b5f56e974 ("ArmVirtPkg/PlatformPeiLib: discover the TPM base ...")
Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org>
---
ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c
b/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c
index 8b5b3dd5dc1c..6c4028e17995 100644
--- a/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c
+++ b/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c
@@ -77,6 +77,11 @@ PlatformPeim (
TpmBase = 0;
+ //
+ // Set Parent to suppress incorrect compiler/analyzer warnings.
+ //
+ Parent = 0;
+
for (Prev = Depth = 0;; Prev = Node) {
Node = fdt_next_node (Base, Prev, &Depth);
if (Node < 0) {
--
2.17.1
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