The MCUSW libraries generated about ~30000 warnings of the type gnu-variable-sized-type-not-at-end due to the flexible array usage in some header structures that are used in IPC messaging (99.99% from tisci_header structure) headers

/**
 * \brief Header that prefixes all TISCI messages.
 *
 * \param type Type of message identified by a TISCI_MSG_* ID
 * \param host Host of the message.
 * \param seq Message identifier indicating a transfer sequence.
 * \param flags TISCI_MSG_FLAG_* for the message.
 * \param payload Placeholder pointer that can be used to access the raw message body.
 */
struct tisci_header {
        u16     type;
        u8      host;
        u8      seq;
        u32     flags;
        u8      payload[];
};

This particular warning is an error on Safety Certified GHS Compiler, and cannot be used in ASIL-D software.

This is fixed on the TIFS for 09.01.08 release as part of MISRA-C rules fixes within the TIFS source code, and is also absorbed in PDK in commit
https://git.ti.com/gitweb?p=processor-sdk/pdk.git;a=blobdiff;f=packages/ti/drv/sciclient/soc/sysfw/include/tisci/tisci_protocol.h;h=fcfdbc0d8579716bc16801431ef4cbed88c36c15;hp=b04d4decc77914b5a3ead29cee87e7d2977087a4;hb=f3383ffcb7219101f268bdec46eeb0fe2d541e31;hpb=ee1e26a8a41bc775855f7dd00f9603941fc3f584

Do not suppress this warning anymore