diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 67ad6ed4..1e429c5d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -171,7 +171,7 @@ jobs:
           jobs="gcc/debug gcc/release clang/debug clang/release"
           test "${{ matrix.use_extra }}" = "true" && jobs="$jobs gcc-m32/debug gcc-m32/release"
           echo "===== parallel jobs: $jobs"
-          parallel -kv --lb 'cd build/extra/{} && bash ../../../../misc/testsuite/mimic_ctest.sh' ::: $jobs
+          parallel -kv --lb 'cd build/extra/{} && bash ../../../../misc/testsuite/mimic_ctest_sigsegv.sh' ::: $jobs
       - name: Mimic ctest tests with Valgrind
         if: true # note: valgrind is SLOW
         run: |
diff --git a/misc/testsuite/mimic_ctest_sigsegv.sh b/misc/testsuite/mimic_ctest_sigsegv.sh
new file mode 100755
index 00000000..70e9e745
--- /dev/null
+++ b/misc/testsuite/mimic_ctest_sigsegv.sh
@@ -0,0 +1,44 @@
+#! /usr/bin/env bash
+## vim:set ts=4 sw=4 et:
+set -e; set -o pipefail
+argv0=$0; argv0abs=$(readlink -fn "$argv0"); argv0dir=$(dirname "$argv0abs")
+
+#
+# Copyright (C) Markus Franz Xaver Johannes Oberhumer
+#
+# mimic running "ctest", i.e. the "test" section of CMakeLists.txt
+#   - does not redirect stdout
+#   - allows freely setting $upx_exe_runner, while CMake is restricted to configure-time settings
+#
+# requires:
+#   $upx_exe                (required, but with convenience fallback "./upx")
+# optional settings:
+#   $upx_exe_runner         (e.g. "qemu-x86_64 -cpu Nehalem" or "valgrind")
+#
+
+cat >catch-sigsegv.gdb <<'EOF'
+catch signal SIGSEGV
+commands
+    x/i $pc
+    info reg
+    x/16i $pc-0x20
+end
+EOF
+catcher=$(readlink -fn catch-sigsegv.gdb)
+
+function emu_gdb() {
+    gdb -q -x "$catcher" <<end_go --args "$@"
+    run
+end_go
+}
+
+if [[ -n $upx_exe_runner ]]; then
+    true
+elif [[ -n $CMAKE_CROSSCOMPILING_EMULATOR ]]; then
+    true
+else
+    upx_exe_runner=emu_gdb
+    true
+fi
+
+source "$argv0dir/mimic_ctest.sh"