1 files changed, 43 insertions, 0 deletions
diff --git a/.ci/verify_symbols.sh b/.ci/verify_symbols.sh
new file mode 100755
index 0000000..2fe2d5d
--- /dev/null
+++ b/.ci/verify_symbols.sh
@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+
+set -o errexit -o nounset -o pipefail
+
+script_name="$( basename -- "${BASH_SOURCE[0]}" )"
+readonly script_name
+
+main() {
+    if [ "$#" -lt 1 ]; then
+        echo "usage: $script_name BIN_PATH [SYMBOL...]" >&2
+        return 1
+    fi
+
+    local path="$1"
+    shift
+
+    local nm
+    nm="$( nm --demangle -- "$path" 2>&1 )"
+
+    if [ "$#" -eq 0 ]; then
+        if [ "$nm" == "nm: $path: no symbols" ]; then
+            echo "$script_name: file '$path' has no symbols, as expected"
+            return 0
+        else
+            echo "$script_name: file '$path' should not have symbols, but it does" >&2
+            return 1
+        fi
+    fi
+
+    local symbol
+    for symbol; do
+        if echo "$nm" | grep -F --quiet -e " $symbol"; then
+            echo "$script_name: file '$path' has symbol '$symbol'"
+        else
+            echo "$script_name: symbol '$symbol' wasn't found in file '$path'"
+            echo "$script_name: here's the complete symbol list:"
+            echo "$nm"
+            return 1
+        fi
+    done
+}
+
+main "$@"