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| author | wenyi xie <xiewenyi2=huawei.com@groups.io> | 2020-11-26 09:50:33 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2020-12-04 05:56:09 +0000 |
| commit | c02bdb276baf8c37a42c87dff68fb0d3f264b124 (patch) | |
| tree | 7014be0515305671d87dc292a6162c3937cd2573 /MdeModulePkg | |
| parent | 31e8a47b62a4f3dc45d8f9bbf3529a188e867a87 (diff) | |
| download | edk2-c02bdb276baf8c37a42c87dff68fb0d3f264b124.tar.gz edk2-c02bdb276baf8c37a42c87dff68fb0d3f264b124.tar.bz2 edk2-c02bdb276baf8c37a42c87dff68fb0d3f264b124.zip | |
MdeModulePkg/FileExplorerLib: remove redundant null pointer check
If "Info" is a valid pointer to an EFI_FILE_SYSTEM_VOLUME_LABEL
structure, then "Info->VolumeLabel" denotes a valid array object.
When the "Info->VolumeLabel" expression is evaluated, as seen in
the LibFindFileSystem(), it is implicitly converted to
(&Info->VolumeLabel[0]). Because the object described by the
expression (Info->VolumeLabel[0]) is a valid CHAR16 object, its
address can never compare equal to NULL. Therefore, the condition
(Info->VolumeLabel == NULL) will always evaluate to FALSE.
Substitute the constant FALSE into the "if" statement, and
simplify the resultant code (eliminate the dead branch).
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Signed-off-by: Wenyi Xie <xiewenyi2@huawei.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'MdeModulePkg')
| -rw-r--r-- | MdeModulePkg/Library/FileExplorerLib/FileExplorer.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c b/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c index 58e4910259..13a214b06a 100644 --- a/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c +++ b/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c @@ -821,13 +821,9 @@ LibFindFileSystem ( if (Info == NULL) {
VolumeLabel = L"NO FILE SYSTEM INFO";
} else {
- if (Info->VolumeLabel == NULL) {
- VolumeLabel = L"NULL VOLUME LABEL";
- } else {
- VolumeLabel = Info->VolumeLabel;
- if (*VolumeLabel == 0x0000) {
- VolumeLabel = L"NO VOLUME LABEL";
- }
+ VolumeLabel = Info->VolumeLabel;
+ if (*VolumeLabel == 0x0000) {
+ VolumeLabel = L"NO VOLUME LABEL";
}
}
MenuEntry->DisplayString = AllocateZeroPool (MAX_CHAR);
|