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lib/reed_solomon: Fix array subscript 0 is outside array bounds

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The grub_absolute_pointer() is a compound expression that can only work
within a function. We are out of luck here when the pointer variables
require global definition due to ATTRIBUTE_TEXT that have to use fully
initialized global definition because of the way linkers work.

  static gf_single_t * const gf_powx ATTRIBUTE_TEXT = (void *) 0x100000;

For the reason given above, use GCC diagnostic pragmas to suppress the
array-bounds warning.

Signed-off-by: Michael Chang <mchang@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Michael Chang 2022-03-28 15:00:54 +08:00 committed by Daniel Kiper
parent acffb81485
commit 3ce13d974b
1 changed files with 9 additions and 0 deletions
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9
grub-core/lib/reed_solomon.c
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@ -102,6 +102,11 @@ static gf_single_t errvals[256];
static gf_single_t eqstat[65536 + 256]; static gf_single_t eqstat[65536 + 256];
#endif #endif
#if __GNUC__ == 12
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Warray-bounds"
#endif
static gf_single_t static gf_single_t
gf_mul (gf_single_t a, gf_single_t b) gf_mul (gf_single_t a, gf_single_t b)
{ {
@ -319,6 +324,10 @@ decode_block (gf_single_t *ptr, grub_size_t s,
} }
} }
#if __GNUC__ == 12
#pragma GCC diagnostic pop
#endif
#if !defined (STANDALONE) #if !defined (STANDALONE)
static void static void
encode_block (gf_single_t *ptr, grub_size_t s, encode_block (gf_single_t *ptr, grub_size_t s,