From b02d4b6e386b0e6c02ede532f06ccf615e8b72c5 Mon Sep 17 00:00:00 2001
From: Benjamin Barenblat <bbaren@mit.edu>
Date: Sat, 30 May 2020 15:38:23 -0400
Subject: Use -D_FORTIFY_SOURCE=1 instead of 2

Prevent major performance regressions by forcing -D_FORTIFY_SOURCE=1
instead of -D_FORTIFY_SOURCE=2. See https://bugs.debian.org/934722 for
details.
---
 debian/rules | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'debian/rules')

diff --git a/debian/rules b/debian/rules
index a7ae92ed..43395a92 100755
--- a/debian/rules
+++ b/debian/rules
@@ -11,6 +11,10 @@ export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed
 # arm64 and mips64el. See https://bugs.debian.org/871572 for details.
 export DEB_CFLAGS_MAINT_APPEND := -fno-code-hoisting
 
+# Use -D_FORTIFY_SOURCE=1 instead of -D_FORTIFY_SOURCE=2 to prevent performance
+# problems with %n specifiers. See https://bugs.debian.org/934722 for details.
+export DEB_CPPFLAGS_MAINT_APPEND := -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1
+
 # Harden SML executables.
 export DEB_BUILD_MAINT_OPTIONS := hardening=+all
 export MLTONARGS := \
-- 
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