Hi While compiling 5.x I am getting stuck at uboot
>>>>>>>>>>
part_efi.c: In function 'gpt_fill_pte':
part_efi.c:433:38: error: iteration 32u invokes undefined behavior
[-Werror=aggressive-loop-optimizations]
(efi_char16_t)(partitions[i].name[k]);
^
part_efi.c:431:3: note: containing loop
for (k = 0; k < name_len; k++)
^
cc1: all warnings being treated as errors
>>>>>>>>>>>
the gcc is from the actual toolchain
i486-unknown-linux-uclibc-gcc (GCC) 4.8.2
the code looks like
>>>>>>>>>>>
/* partition attributes */
memset(&gpt_e[i].attributes, 0,
sizeof(gpt_entry_attributes));
/* partition name */
name_len = sizeof(gpt_e[i].partition_name)
/ sizeof(efi_char16_t);
for (k = 0; k < name_len; k++)
gpt_e[i].partition_name[k] =
(efi_char16_t)(partitions[i].name[k]);
>>>>>>>>>>>>
I suspect the name_len to be the culprit, because
>>>>>
name_len = sizeof(gpt_e[i].partition_name)
/ sizeof(efi_char16_t);
98 typedef struct _gpt_entry {
99 efi_guid_t partition_type_guid;
100 efi_guid_t unique_partition_guid;
101 __le64 starting_lba;
102 __le64 ending_lba;
103 gpt_entry_attributes attributes;
104 efi_char16_t partition_name[72 / sizeof (efi_char16_t)];
105 } __attribute__ ((packed)) gpt_entry;
>>>>>
partition name is of type efi_char16_t, so name_len will always be 1
Is it possible that the compiler gets confused when trying to optimize
this loop?
Any ideas how to tackle this?
Thanks
Erich
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