StdLib: Fix GCC warnings/errors caused by variables being set but not used.

Removed variables that had no effect on code behavior.

Fifo.c::FIFO_Dequeue: Replaced instances of "Self->ElementSize" with preexisting variable "SizeOfElement".

IIOutilities.c::IIO_GetInChar: Fixed variable of wrong, but compatible, type and made updating of housekeeping variables dependent upon successful completion of reading from the buffer.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed by: Daryl McDaniel <daryl.mcdaniel@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16276 6f19259b-4bc3-4df7-8a09-765794883524

3 files changed, 7 insertions, 9 deletions

diff --git a/StdLib/LibC/Uefi/InteractiveIO/IIOutilities.c b/StdLib/LibC/Uefi/InteractiveIO/IIOutilities.c
index 0e80ff0eaf..2e61cd1e80 100644
--- a/StdLib/LibC/Uefi/InteractiveIO/IIOutilities.c
+++ b/StdLib/LibC/Uefi/InteractiveIO/IIOutilities.c
@@ -75,7 +75,7 @@ IIO_GetInChar (
 {

   cIIO             *This;

   cFIFO            *InBuf;

-  EFI_STATUS        Status;

+  size_t            Status;

   ssize_t           NumRead;

   wint_t            RetVal;

   wchar_t           InChar;

@@ -92,8 +92,10 @@ IIO_GetInChar (
   }

   if(BufCnt > 0) {

     Status = InBuf->Read(InBuf, &InChar, 1);

-    --BufCnt;

-    NumRead = 1;

+    if (Status > 0) {

+      --BufCnt;

+      NumRead = 1;

+    }

   }

   else {

     NumRead = filp->f_ops->fo_read(filp, &filp->f_offset, sizeof(wchar_t), &InChar);

diff --git a/StdLib/LibC/Uefi/InteractiveIO/IIOwrite.c b/StdLib/LibC/Uefi/InteractiveIO/IIOwrite.c
index 927f4f4ff3..ef52cc890e 100644
--- a/StdLib/LibC/Uefi/InteractiveIO/IIOwrite.c
+++ b/StdLib/LibC/Uefi/InteractiveIO/IIOwrite.c
@@ -8,7 +8,7 @@
   It is the responsibility of the caller, or higher level function, to perform

   any necessary translation between wide and narrow characters.

 

-  Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>

+  Copyright (c) 2012 - 2014, Intel Corporation. All rights reserved.<BR>

   This program and the accompanying materials are licensed and made available

   under the terms and conditions of the BSD License which accompanies this

   distribution.  The full text of the license may be found at

@@ -63,7 +63,6 @@ IIO_WriteOne(struct __filedes *filp, cFIFO *OBuf, wchar_t InCh)
   UINT32              CurRow;       // Current cursor row on the screen

   UINT32              PrevColumn;   // Previous column.  Used to detect wrapping.

   UINT32              AdjColumn;    // Current cursor column on the screen

-  UINT32              AdjRow;       // Current cursor row on the screen

 

   RetVal    = -1;

   wcb       = wc;

@@ -79,7 +78,6 @@ IIO_WriteOne(struct __filedes *filp, cFIFO *OBuf, wchar_t InCh)
     CurRow    = This->CurrentXY.Row;

 

     numW      = 1;          // The majority of characters buffer one character

-    AdjRow    = 0;          // Most characters just cause horizontal movement

     AdjColumn = 0;

     if(OFlag & OPOST) {

       /* Perform output processing */

@@ -127,7 +125,6 @@ IIO_WriteOne(struct __filedes *filp, cFIFO *OBuf, wchar_t InCh)
             numW  = 2;

             CurColumn = 0;

           }

-          AdjRow = 1;

           break;                      //}}

 

         case CHAR_BACKSPACE:          //{{

diff --git a/StdLib/LibC/Uefi/InteractiveIO/NonCanonRead.c b/StdLib/LibC/Uefi/InteractiveIO/NonCanonRead.c
index bcae9c8239..aab81cdaa8 100644
--- a/StdLib/LibC/Uefi/InteractiveIO/NonCanonRead.c
+++ b/StdLib/LibC/Uefi/InteractiveIO/NonCanonRead.c
@@ -37,7 +37,6 @@ IIO_NonCanonRead (
   cIIO           *This;

   cFIFO          *InBuf;

   struct termios *Termio;

-  EFI_STATUS      Status;

   ssize_t         NumRead;

   cc_t            tioMin;

   cc_t            tioTime;

@@ -74,7 +73,7 @@ IIO_NonCanonRead (
       if(InBuf->IsEmpty(InBuf)) {

         NumRead = filp->f_ops->fo_read(filp, &filp->f_offset, sizeof(wchar_t), &InChar);

         if(NumRead > 0) {

-          Status = InBuf->Write(InBuf, &InChar, 1);  // Buffer the character

+          (void) InBuf->Write(InBuf, &InChar, 1);  // Buffer the character

         }

       }

   //    break;