[src/trunk]: src/doc PR port-sh3/56311

[rin <rin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/3e9ddbe569c6
branches:  trunk
changeset: 1022409:3e9ddbe569c6
user:      rin <rin%NetBSD.org@localhost>
date:      Fri Jul 16 10:02:50 2021 +0000

description:
PR port-sh3/56311

Correct misinterpretation for the cause of the problem, and link to
the bug report for upstream.

diffstat:

 doc/HACKS |  11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diffs (25 lines):

diff -r 4658d6d3751b -r 3e9ddbe569c6 doc/HACKS
--- a/doc/HACKS Fri Jul 16 02:33:32 2021 +0000
+++ b/doc/HACKS Fri Jul 16 10:02:50 2021 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: HACKS,v 1.223 2021/07/15 08:02:47 rin Exp $
+# $NetBSD: HACKS,v 1.224 2021/07/16 10:02:50 rin Exp $
 #
 # This file is intended to document workarounds for currently unsolved
 # (mostly) compiler bugs.
@@ -1001,9 +1001,12 @@
 port   sh3
 hack   compile lint1/initdecl() with -O0 for sh3 (port-sh3/56311)
 cdate  Thu Jul 15 07:58:05 UTC 2021
+mdate  Fri Jul 16 10:00:00 UTC 2021
 who    rin
 file   src/usr.bin/xlint/lint1/decl.c: 1.200
-descr  GCC 9 and 10 miscompile initdecl() due to improper use of scratch
-       register, as described in the PR. Compiling this function with -O0
-       works around the problem.
+descr  GCC 9 and 10 miscompile initdecl() due to mischoice of register,
+       as described in the PR. Compiling this function with -O0 works
+       around the problem.
+       The problem has been reported to upstream as GCC Bug 101469:
+       https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101469
 kcah