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-rw-r--r--app-shells/bash/bash-9999.ebuild4
1 files changed, 3 insertions, 1 deletions
diff --git a/app-shells/bash/bash-9999.ebuild b/app-shells/bash/bash-9999.ebuild
index f23c2d7e977c..9c4d87cd6f0a 100644
--- a/app-shells/bash/bash-9999.ebuild
+++ b/app-shells/bash/bash-9999.ebuild
@@ -167,8 +167,10 @@ src_configure() {
# Upstream only test with Bison and require GNUisms like YYEOF and
# YYERRCODE. The former at least may be in POSIX soon:
# https://www.austingroupbugs.net/view.php?id=1269.
+ #
# configure warns on use of non-Bison but doesn't abort. The result
- # may misbehave at runtime.
+ # may misbehave at runtime. Chet also advises against use of byacc:
+ # https://lists.gnu.org/archive/html/bug-bash/2025-08/msg00115.html
unset -v YACC
if tc-is-cross-compiler; then