[PATCH] bpf: define INT8_TYPE as signed char

[David Faust <david.faust@oracle.com>]

Change the BPF backend to define INT8_TYPE with an explicit sign, rather
than a plain char.  This is in line with other targets and removes the
risk of int8_t being affected by the signedness of the plain char type
of the host system.

Tested on x86_64-linux-gnu host for bpf-unknown-none.
Sanity checked compiling Linux kernel BPF selftests.

gcc/

	* config/bpf/bpf.h (INT8_TYPE): Change to signed char.
---
 gcc/config/bpf/bpf.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/config/bpf/bpf.h b/gcc/config/bpf/bpf.h
index f107a5a4c34..3cc5daa1b58 100644
--- a/gcc/config/bpf/bpf.h
+++ b/gcc/config/bpf/bpf.h
@@ -99,7 +99,7 @@
 
 #define SIG_ATOMIC_TYPE "char"
 
-#define INT8_TYPE "char"
+#define INT8_TYPE "signed char"
 #define INT16_TYPE "short int"
 #define INT32_TYPE "int"
 #define INT64_TYPE "long int"
-- 
2.43.0