The MCAL Ethernet library application code goes into the ASIL-D MCU R5F core. Customer is using GHS Safety Certified Compiler which generates a number of errors and warnings, which do not show up with TI ARM Clang Compiler. 

Error line marked ith ==>

1. mcal/Eth/include/Eth_Packet.h", line 119 (col. 19): error #94: the size of an array must be greater than zero

/**
 *  \brief Ethernet frame
 *
 *  Ethernet frame without VLAN tag
 */
typedef struct
{
    Eth_FrameHeader hdr;
    /**< Ethernet frame header */
==>    uint8 payload[0U];
    /**< Pointer to the frame's payload */
} __attribute__((packed)) Eth_Frame;

Analysis
GHS doesn't like any structure or variable that has zero size. Given that this is data generated by TI, Customer insists TI fix the issues.