From ed006411e390ff4ef3c625b191cc6e707dafdce4 Mon Sep 17 00:00:00 2001
From: Konstantin Akimov <github@knstqq.com>
Date: Sun, 18 Oct 2026 12:54:12 +0700
Subject: [PATCH] build: revert passing sanitizer flags to libsecp256k1

It is part of bitcoin#28875, backported in #7503.
Since that merge every sanitizer job compiles libsecp256k1 with -fsanitize, so the TSan job instruments all of secp256k1's ECDSA code.
It reverts _only_ libsecp256k1 sanitizer, other C code in the repo is still profiled.

The UBSan suppression lines that came with the backport are kept: they are harmless without the instrumentation.
---
 configure.ac | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index d36c49ebfdf6..97cef0cc972a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2062,9 +2062,6 @@ CPPFLAGS_TEMP="$CPPFLAGS"
 unset CPPFLAGS
 CPPFLAGS="$CPPFLAGS_TEMP"
 
-if test -n "$use_sanitizers"; then
-  export SECP_CFLAGS="$SECP_CFLAGS $SANITIZER_CFLAGS"
-fi
 dnl The ECDH module is required by the wallet's Platform key provider
 dnl (DashPay contact request encryption, wallet/platformkeys.cpp).
 ac_configure_args="${ac_configure_args} --disable-shared --with-pic --enable-benchmark=no --enable-module-recovery --enable-module-ecdh --disable-openssl-tests"