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Author: dschuff

system/lib/libc/emscripten_memcpy_bulkmem.S

@@ -11,6 +11,7 @@ _emscripten_memcpy_bulkmem:
 #ifdef __wasm64__
   i32.wrap_i64
 #endif
+  // memory.copy traps on OOB zero-length copies, but memcpy must not.
   if
     local.get 0
     local.get 1

system/lib/libc/emscripten_memset_bulkmem.S

@@ -11,6 +11,7 @@ _emscripten_memset_bulkmem:
 #ifdef __wasm64__
   i32.wrap_i64
 #endif
+  // memory.fill traps on OOB zero-length sets, but memset must not.
   if
    local.get 0
    local.get 1