diff --git a/meson.build b/meson.build
index 43a5a98..6ed9fb8 100644
--- a/meson.build
+++ b/meson.build
@@ -276,6 +276,7 @@ test_env = environment()
 test_env.set('XKB_LOG_LEVEL', 'debug')
 test_env.set('XKB_LOG_VERBOSITY', '10')
 test_env.set('top_srcdir', meson.source_root())
+test_env.set('top_builddir', meson.build_root())
 test_env.set('MALLOC_PERTURB_', '15')
 test_env.set('MallocPreScribble', '1')
 test_env.set('MallocScribble', '1')
diff --git a/test/symbols-leak-test.bash b/test/symbols-leak-test.bash
index 0a74c5f..f739eed 100755
--- a/test/symbols-leak-test.bash
+++ b/test/symbols-leak-test.bash
@@ -1,16 +1,19 @@
 #!/usr/bin/env bash
-set -e
+set -o pipefail -o errexit -o nounset
+
+tempdir=$(mktemp -d "$top_builddir"/symbols-leak-test.XXXXXXXXXX)
+trap 'rm -rf "$tempdir"' EXIT
 
 # Check that all exported symbols are specified in the symbol version
 # scripts.  If this fails, please update the appropriate .map file
 # (adding new version nodes as needed).
 
 # xkbcommon symbols
-diff -a -u \
-    <(grep -h '^\s\+xkb_' "$top_srcdir"/xkbcommon.map | sed -e 's/^\s\+\(.*\);/\1/' | sort) \
-    <(grep -h 'XKB_EXPORT' -A1 "$top_srcdir"/src/{,xkbcomp,compose}/*.c | grep '^xkb_' | sed -e 's/(.*//' | sort)
+grep -h '^\s\+xkb_' "$top_srcdir"/xkbcommon.map | sed -e 's/^\s\+\(.*\);/\1/' | sort > "$tempdir"/symbols
+grep -h 'XKB_EXPORT' -A1 "$top_srcdir"/src/{,xkbcomp,compose}/*.c | grep '^xkb_' | sed -e 's/(.*//' | sort > "$tempdir"/exported
+diff -a -u "$tempdir"/symbols "$tempdir"/exported
 
 # xkbcommon-x11 symbols
-diff -a -u \
-    <(grep -h '^\s\+xkb_.*' "$top_srcdir"/xkbcommon-x11.map | sed -e 's/^\s\+\(.*\);/\1/' | sort) \
-    <(grep -h 'XKB_EXPORT' -A1 "$top_srcdir"/src/x11/*.c | grep '^xkb_' | sed -e 's/(.*//' | sort)
+grep -h '^\s\+xkb_.*' "$top_srcdir"/xkbcommon-x11.map | sed -e 's/^\s\+\(.*\);/\1/' | sort > "$tempdir"/symbols
+grep -h 'XKB_EXPORT' -A1 "$top_srcdir"/src/x11/*.c | grep '^xkb_' | sed -e 's/(.*//' | sort > "$tempdir"/exported
+diff -a -u "$tempdir"/symbols "$tempdir"/exported