read unknown users sections as binary data stored on the Module (#918)

1 files changed, 10 insertions, 0 deletions

diff --git a/src/wasm.h b/src/wasm.h
index 9807ee63c..4ad0870cc 100644
--- a/src/wasm.h
+++ b/src/wasm.h
@@ -1528,6 +1528,14 @@ public:
   bool mutable_;
 };
 
+// "Opaque" data, not part of the core wasm spec, that is held in binaries.
+// May be parsed/handled by utility code elsewhere, but not in wasm.h
+class UserSection {
+public:
+  std::string name;
+  std::vector<char> data;
+};
+
 class Module {
 public:
   // wasm contents (generally you shouldn't access these from outside, except maybe for iterating; use add*() and the get() functions)
@@ -1541,6 +1549,8 @@ public:
   Memory memory;
   Name start;
 
+  std::vector<UserSection> userSections;
+
   MixedArena allocator;
 
 private: