On Sun, Jul 14, 2019 at 7:44 PM Heinrich Schuchardt xypron.glpk@gmx.de wrote:
When building with GCC 9.1 an error occurs:
disk/part_efi.c: In function ‘gpt_verify_partitions’: disk/part_efi.c:737:49: error: taking address of packed member of ‘struct _gpt_entry’ may result in an unaligned pointer value [-Werror=address-of-packed-member] 737 | gpt_convert_efi_name_to_char(efi_str, gpt_e[i].partition_name, | ~~~~~~~~^~~~~~~~~~~~~~~ cc1: all warnings being treated as errors make[1]: *** [scripts/Makefile.build:279: disk/part_efi.o] Error 1 make: *** [Makefile:1594: disk] Error 2
Adjust gpt_convert_efi_name_to_char() to accept unaligned strings.
Reported-by: Ramon Fried rfried.dev@gmail.com Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de
Makefile | 2 +- disk/part_efi.c | 13 +++++++++++-- 2 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/Makefile b/Makefile index 73fdf70cdd..a0e521363e 100644 --- a/Makefile +++ b/Makefile @@ -665,7 +665,7 @@ endif endif
# Prohibit date/time macros, which would make the build non-deterministic -KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) +KBUILD_CFLAGS += $(call cc-option,-Werror)
Is this part of the patch or commited by mistake ?
include scripts/Makefile.extrawarn
diff --git a/disk/part_efi.c b/disk/part_efi.c index 3e026697db..359b55a818 100644 --- a/disk/part_efi.c +++ b/disk/part_efi.c @@ -670,9 +670,18 @@ err: return ret; }
-static void gpt_convert_efi_name_to_char(char *s, efi_char16_t *es, int n) +/**
- gpt_convert_efi_name_to_char() - convert u16 string to char string
- TODO: this conversion only supports ANSI characters
- @s: target buffer
- @es: u16 string to be converted
- @n: size of target buffer
- */
+static void gpt_convert_efi_name_to_char(char *s, void *es, int n) {
char *ess = (char *)es;
char *ess = es; int i, j; memset(s, '\0', n);-- 2.22.0