From 06864f435459aa71194a0eee8249f5ad6adc9432 Mon Sep 17 00:00:00 2001
From: wangmengc <wangmengc@uniontech.com>
Date: Fri, 31 May 2024 10:26:59 +0800
Subject: [PATCH] add expr_unwind function

---
 utshell-0.5/r_expr/src/lib.rs | 38 +++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/utshell-0.5/r_expr/src/lib.rs b/utshell-0.5/r_expr/src/lib.rs
index 19ff50c1..8ebfebac 100644
--- a/utshell-0.5/r_expr/src/lib.rs
+++ b/utshell-0.5/r_expr/src/lib.rs
@@ -1601,4 +1601,42 @@ unsafe extern "C" fn subexpr(mut expr: *mut libc::c_char) -> intmax_t {
     }
     popexp();
     return val;
+}
+
+
+#[no_mangle]
+unsafe extern "C" fn expr_unwind() {
+    loop {
+        expr_depth -= 1;
+        if !(expr_depth > 0 as libc::c_int) {
+            break;
+        }
+        if !((**expr_stack.offset(expr_depth as isize)).tokstr).is_null() {
+            sh_xfree(
+                (**expr_stack.offset(expr_depth as isize)).tokstr as *mut libc::c_void,
+                b"../expr.c\0" as *const u8 as *const libc::c_char,
+                308 as libc::c_int,
+            );
+        }
+        if !((**expr_stack.offset(expr_depth as isize)).expression).is_null() {
+            sh_xfree(
+                (**expr_stack.offset(expr_depth as isize)).expression as *mut libc::c_void,
+                b"../expr.c\0" as *const u8 as *const libc::c_char,
+                311 as libc::c_int,
+            );
+        }
+        sh_xfree(
+            *expr_stack.offset(expr_depth as isize) as *mut libc::c_void,
+            b"../expr.c\0" as *const u8 as *const libc::c_char,
+            313 as libc::c_int,
+        );
+    }
+    if expr_depth == 0 as libc::c_int {
+        sh_xfree(
+            *expr_stack.offset(expr_depth as isize) as *mut libc::c_void,
+            b"../expr.c\0" as *const u8 as *const libc::c_char,
+            316 as libc::c_int,
+        );
+    }
+    noeval = 0 as libc::c_int;
 }
\ No newline at end of file
-- 
Gitee