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[PATCH 3/3] reed_solomon: Fix array subscript 0 is outside array bounds
From: |
Michael Chang |
Subject: |
[PATCH 3/3] reed_solomon: Fix array subscript 0 is outside array bounds |
Date: |
Thu, 17 Mar 2022 14:43:42 +0800 |
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>
---
grub-core/lib/reed_solomon.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/grub-core/lib/reed_solomon.c b/grub-core/lib/reed_solomon.c
index 82779a296b..562bd2e3e3 100644
--- a/grub-core/lib/reed_solomon.c
+++ b/grub-core/lib/reed_solomon.c
@@ -102,6 +102,11 @@ static gf_single_t errvals[256];
static gf_single_t eqstat[65536 + 256];
#endif
+#if __GNUC__ == 12
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Warray-bounds"
+#endif
+
static gf_single_t
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)
static void
encode_block (gf_single_t *ptr, grub_size_t s,
--
2.34.1