[BUG] GCCでビルドしたときにOTA_PAL.c に不正動作がある

[HirokiIshiguro]

Describe the bug

• GCCでビルドしたときにOTA_PAL.c に不正動作がある
• https://github.com/aws/amazon-freertos/blob/fb17855b36b15a4c834b4a5378e46f83581cd975/vendors/renesas/boards/rx65n-rsk/ports/ota_pal_for_aws/ota_pal.c#L1112

System information

• Hardware board: [ any ]
• IDE used: [ e2 studio ]
• Operating System: [ Windows ]
• Code version: (202107.00 or older)
• Project/Demo: [ ota_demo ]
• If your project is a custom application, please add the relevant code snippet(s) in the section titled "Code to reproduce bug".
  • none

Expected behavior

• 正常動作

Screenshots or console output

• none

Steps to reproduce bug

• OTA動作込みのIDTを動作させる

Code to reproduce bug

• IDTでシステム動作させる

Additional context

• none

[HirokiIshiguro]

暫定対策

• -fno-delete-null-pointer-checks を有効にする

恒久対策

• この内容をAWS本家のリポジトリにプルリクエストを出す -> https://github.com/aws/amazon-freertos
• 変更前

            while( 1 )
            {
                if( ( new->content.offset < current->content.offset ) || ( current == NULL ) )
                {
                    break;
                }

• 変更後

            while( 1 )
            {
                if( current == NULL )
                {
                    if( new->content.offset < current->content.offset )
                    {
                        break;
                    }
                }