Module Name: src
Committed By: mrg
Date: Mon Sep 4 21:01:15 UTC 2023
Modified Files:
src/doc: HACKS
Log Message:
document x86 curlwp/curcpu hack for GCC 12.
To generate a diff of this commit:
cvs rdiff -u -r1.239 -r1.240 src/doc/HACKS
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/doc/HACKS
diff -u src/doc/HACKS:1.239 src/doc/HACKS:1.240
--- src/doc/HACKS:1.239 Tue Jul 18 03:01:35 2023
+++ src/doc/HACKS Mon Sep 4 21:01:15 2023
@@ -1,4 +1,4 @@
-# $NetBSD: HACKS,v 1.239 2023/07/18 03:01:35 rin Exp $
+# $NetBSD: HACKS,v 1.240 2023/09/04 21:01:15 mrg Exp $
#
# This file is intended to document workarounds for currently unsolved
# (mostly) compiler bugs.
@@ -1100,3 +1100,16 @@ descr
This feature (for LP64) does not support big-endian machines.
Note that sparc64 does not use this (port-sparc64/57472).
kcah
+
+hack GCC: Disable "-Warray-bounds" for x86 curcpu() and curlwp()
+cdate Mon Sep 4 13:59:32 PDT 2023
+who mrg
+port i386 amd64
+file src/sys/arch/amd64/include/cpu.h : 1.71
+file src/sys/arch/i386/include/cpu.h : 1.184
+descr
+ These functions trigger eg:
+ ./machine/cpu.h:57:9: error: array subscript 0 is outside array bounds of 'struct cpu_info * const[0]' [-Werror=array-bounds]
+ 56 | __asm("movq %%gs:%1, %0" :
+ and can't easily be worked around.
+kcah
