codegen: fix byte-aligned field offsets in unaligned nested packed structs

1 files changed, 2 insertions, 1 deletions

diff --git a/src/codegen/llvm.zig b/src/codegen/llvm.zig
index 753e02a857..236584f44f 100644
--- a/src/codegen/llvm.zig
+++ b/src/codegen/llvm.zig
@@ -10140,6 +10140,7 @@ pub const FuncGen = struct {
                     const result_ty = self.typeOfIndex(inst);
                     const result_ty_info = result_ty.ptrInfo(mod);
                     const struct_ptr_ty_info = struct_ptr_ty.ptrInfo(mod);
+                    const struct_type = mod.typeToStruct(struct_ty).?;
 
                     if (result_ty_info.packed_offset.host_size != 0) {
                         // From LLVM's perspective, a pointer to a packed struct and a pointer
@@ -10151,7 +10152,7 @@ pub const FuncGen = struct {
 
                     // We have a pointer to a packed struct field that happens to be byte-aligned.
                     // Offset our operand pointer by the correct number of bytes.
-                    const byte_offset = struct_ty.packedStructFieldByteOffset(field_index, mod) + @divExact(struct_ptr_ty_info.packed_offset.bit_offset, 8);
+                    const byte_offset = @divExact(mod.structPackedFieldBitOffset(struct_type, field_index) + struct_ptr_ty_info.packed_offset.bit_offset, 8);
                     if (byte_offset == 0) return struct_ptr;
                     const usize_ty = try o.lowerType(Type.usize);
                     const llvm_index = try o.builder.intValue(usize_ty, byte_offset);