[Bug target/105523] Wrong warning array subscript [0] is outside array bounds

["rudi at heitbaum dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105523

rudi at heitbaum dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rudi at heitbaum dot com

--- Comment #5 from rudi at heitbaum dot com ---
Compiling atf with gcc-12.1.0 for the NXP iMX8 target results in the same
error.

CFLAGS=+“ --param=min-pagesize=0” allows the build to complete.

———-

PROJECT=NXP ARCH=arm DEVICE=iMX8 s/build atf
CLEAN      atf
    *      Removing
/var/media/DATA/home-rudi/LibreELEC.kernel11/build.LibreELEC-iMX8.arm-11.0-devel/build/atf-2.4
...
    *      Removing
/var/media/DATA/home-rudi/LibreELEC.kernel11/build.LibreELEC-iMX8.arm-11.0-devel/install_pkg/atf-2.4
...
UNPACK      atf
BUILD      atf (target)
    TOOLCHAIN      manual
  CC      bl31/bl31_context_mgmt.c
  CC      bl31/bl31_main.c
  CC      bl31/interrupt_mgmt.c
  CC      common/runtime_svc.c
  CC      drivers/arm/gic/v3/arm_gicv3_common.c
  CC      drivers/arm/gic/v3/gic-x00.c
  CC      drivers/arm/gic/v3/gicdv3_helpers.c
  CC      drivers/arm/gic/v3/gicrv3_helpers.c
  CC      drivers/arm/gic/v3/gicv3_helpers.c
  CC      drivers/arm/gic/v3/gicv3_main.c
  CC      drivers/arm/tzc/tzc380.c
  CC      drivers/delay_timer/delay_timer.c
  CC      drivers/delay_timer/generic_delay_timer.c
  CC      lib/cpus/errata_report.c
  CC      lib/el3_runtime/aarch64/context_mgmt.c
  CC      lib/el3_runtime/cpu_data_array.c
  CC      lib/extensions/spe/spe.c
  CC      lib/extensions/sve/sve.c
  CC      lib/locks/bakery/bakery_lock_coherent.c
  CC      lib/psci/psci_common.c
  CC      lib/psci/psci_main.c
  CC      lib/psci/psci_mem_protect.c
  CC      lib/psci/psci_off.c
  CC      lib/psci/psci_on.c
  CC      lib/psci/psci_setup.c
  CC      lib/psci/psci_suspend.c
  CC      lib/psci/psci_system_off.c
  CC      lib/xlat_tables/aarch64/xlat_tables.c
  CC      lib/xlat_tables/xlat_tables_common.c
  CC      plat/common/plat_gicv3.c
  CC      plat/common/plat_psci_common.c
  CC      plat/imx/common/imx8_topology.c
  CC      plat/imx/common/imx_sip_handler.c
  CC      plat/imx/common/imx_sip_svc.c
  CC      plat/imx/common/plat_imx8_gic.c
  CC      plat/imx/imx8m/gpc_common.c
  CC      plat/imx/imx8m/imx8m_caam.c
  CC      plat/imx/imx8m/imx8m_psci_common.c
  CC      plat/imx/imx8m/imx8mq/gpc.c
  CC      plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c
  CC      plat/imx/imx8m/imx8mq/imx8mq_psci.c
  CC      plat/imx/imx8m/imx_aipstz.c
  CC      services/arm_arch_svc/arm_arch_svc_setup.c
  CC      services/std_svc/std_svc_setup.c
  CC      common/bl_common.c
  CC      common/tf_log.c
  CC      drivers/console/multi_console.c
  CC      plat/common/plat_bl_common.c
  CC      plat/common/plat_log_common.c
  CC      plat/common/aarch64/plat_common.c
  CC      lib/compiler-rt/builtins/popcountdi2.c
  CC      lib/compiler-rt/builtins/popcountsi2.c
  AS      bl31/aarch64/bl31_entrypoint.S
  AS      bl31/aarch64/crash_reporting.S
  AS      bl31/aarch64/ea_delegate.S
  AS      bl31/aarch64/runtime_exceptions.S
  AS      lib/cpus/aarch64/cortex_a53.S
  AS      lib/cpus/aarch64/cpu_helpers.S
  AS      lib/cpus/aarch64/dsu_helpers.S
  AS      lib/cpus/aarch64/wa_cve_2017_5715_bpiall.S
  AS      lib/cpus/aarch64/wa_cve_2017_5715_mmu.S
  AS      lib/el3_runtime/aarch64/context.S
  AS      lib/el3_runtime/aarch64/cpu_data.S
  AS      lib/locks/exclusive/aarch64/spinlock.S
  AS      lib/psci/aarch64/psci_helpers.S
  AS      plat/common/aarch64/platform_mp_stack.S
  AS      plat/imx/common/imx8_helpers.S
  AS      plat/imx/common/imx_uart_console.S
  AS      common/aarch64/debug.S
  AS      lib/aarch64/cache_helpers.S
  AS      lib/aarch64/misc_helpers.S
  AS      plat/common/aarch64/platform_helpers.S
  PP      bl31/bl31.ld.S
  CC      lib/libc/abort.c
  CC      lib/libc/assert.c
  CC      lib/libc/exit.c
  CC      lib/libc/memchr.c
  CC      lib/libc/memcmp.c
  CC      lib/libc/memcpy.c
  CC      lib/libc/memmove.c
  CC      lib/libc/memrchr.c
  CC      lib/libc/memset.c
  CC      lib/libc/printf.c
  CC      lib/libc/putchar.c
  CC      lib/libc/puts.c
  CC      lib/libc/snprintf.c
  CC      lib/libc/strchr.c
In file included from plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c:20:
In function 'mmio_read_8',
    inlined from 'imx8mq_soc_info_init' at
plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c:68:16,
    inlined from 'bl31_platform_setup' at
plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c:193:2:
include/lib/mmio.h:19:16: error: array subscript 0 is outside array bounds of
'volatile uint8_t[0]' {aka 'volatile unsigned char[]'} [-Werror=array-bounds]
   19 |         return *(volatile uint8_t*)addr;
      |                ^~~~~~~~~~~~~~~~~~~~~~~~
In function 'mmio_read_8',
    inlined from 'imx8mq_soc_info_init' at
plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c:72:16,
    inlined from 'bl31_platform_setup' at
plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c:193:2:
include/lib/mmio.h:19:16: error: array subscript 0 is outside array bounds of
'volatile uint8_t[0]' {aka 'volatile unsigned char[]'} [-Werror=array-bounds]
   19 |         return *(volatile uint8_t*)addr;
      |                ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

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