diff --git a/lib/std/zig/AstGen.zig b/lib/std/zig/AstGen.zig
index 61ff3413a19ce98883d973ba1b3eb351f2cd4c69..af9bde4917e76b38d7f51b5c0cae1134e804e16d 100644
--- a/lib/std/zig/AstGen.zig
+++ b/lib/std/zig/AstGen.zig
@@ -13550,7 +13550,7 @@ fn countBodyLenAfterFixups(astgen: *AstGen, body: []const Zir.Inst.Index) u32 {
 
 fn emitDbgStmt(gz: *GenZir, lc: LineColumn) !void {
     if (gz.is_comptime) return;
-    if (gz.instructions.items.len > 0) {
+    if (gz.instructions.items.len > gz.instructions_top) {
         const astgen = gz.astgen;
         const last = gz.instructions.items[gz.instructions.items.len - 1];
         if (astgen.instructions.items(.tag)[@intFromEnum(last)] == .dbg_stmt) {
@@ -13576,7 +13576,7 @@ fn emitDbgStmt(gz: *GenZir, lc: LineColumn) !void {
 /// instructions; fix up Sema so we don't need it!
 fn emitDbgStmtForceCurrentIndex(gz: *GenZir, lc: LineColumn) !void {
     const astgen = gz.astgen;
-    if (gz.instructions.items.len > 0 and
+    if (gz.instructions.items.len > gz.instructions_top and
         @intFromEnum(gz.instructions.items[gz.instructions.items.len - 1]) == astgen.instructions.len - 1)
     {
         const last = astgen.instructions.len - 1;