stdenv, swift: Use local fd in is* bash functions for hygiene

2017-07-07 11:40:07 -04:00
parent a14cf06182
commit e57a220f81
2 changed files with 4 additions and 1 deletions
@@ -194,6 +194,7 @@ _addRpathPrefix() {
 # Return success if the specified file is an ELF object.
 isELF() {
    local fn="$1"
+    local fd
    local magic
    exec {fd}< "$fn"
    read -n 4 -u $fd magic
@@ -205,6 +206,7 @@ isELF() {
 # "#!").
 isScript() {
    local fn="$1"
+    local fd
    local magic
    if ! [ -x /bin/sh ]; then return 0; fi
    exec {fd}< "$fn"