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.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
\r
TpmBase = 0;\r
\r
+ //\r
+ // Set Parent to suppress incorrect compiler/analyzer warnings.\r
+ //\r
+ Parent = 0;\r
+\r
for (Prev = Depth = 0;; Prev = Node) {\r
Node = fdt_next_node (Base, Prev, &Depth);\r
if (Node < 0) {\r