fix block comments

1 files changed, 20 insertions, 1 deletions

diff --git a/src/wasm-s-parser.h b/src/wasm-s-parser.h
index 2f2eeb937..bb3492e9a 100644
--- a/src/wasm-s-parser.h
+++ b/src/wasm-s-parser.h
@@ -164,7 +164,26 @@ private:
       if (input[0] == ';' && input[1] == ';') {
         while (input[0] && input[0] != '\n') input++;
       } else if (input[0] == '(' && input[1] == ';') {
-        input = strstr(input, ";)") + 2;
+        // Skip nested block comments.
+        input += 2;
+        int depth = 1;
+        while (1) {
+          if (input[0] == 0) {
+            return;
+          }
+          if (input[0] == '(' && input[1] == ';') {
+            input += 2;
+            depth++;
+          } else if (input[0] == ';' && input[1] == ')') {
+            input += 2;
+            --depth;
+            if (depth == 0) {
+              break;
+            }
+          } else {
+            input++;
+          }
+        }
       } else {
         return;
       }