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-rw-r--r--src/runtime.js1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/runtime.js b/src/runtime.js
index db334669..9daab820 100644
--- a/src/runtime.js
+++ b/src/runtime.js
@@ -180,6 +180,7 @@ var Runtime = {
// we align i64s and doubles on 64-bit boundaries, unlike x86
#if TARGET_LE32
if (type == 'i64' || type == 'double' || vararg) return 8;
+ if (!type) return Math.min(size, 8); // align structures internally to 64 bits
#endif
return Math.min(size || (type ? Runtime.getNativeFieldSize(type) : 0), Runtime.QUANTUM_SIZE);
},