--- nobug.s	2020-10-06 09:24:32.189076613 +0200
+++ bug.s	2020-10-06 09:24:41.453077163 +0200
@@ -7,7 +7,9 @@
 	pushq	%rax
 	callq	_ZN97_$LT$core..ops..range..RangeFull$u20$as$u20$core..slice..index..SliceIndex$LT$$u5b$T$u5d$$GT$$GT$3get17h74c2e2bb7245d0f5E
 	popq	%rcx
-	retq
+	popq	%rcx
+	lfence
+	jmpq	*%rcx
 .Lfunc_end0:
 	.size	_ZN4core5slice29_$LT$impl$u20$$u5b$T$u5d$$GT$3get17hf6b80a671874953fE, .Lfunc_end0-_ZN4core5slice29_$LT$impl$u20$$u5b$T$u5d$$GT$3get17hf6b80a671874953fE
                                         # -- End function
@@ -22,13 +24,13 @@
 	movq	%rsi, 48(%rsp)
 	movb	$1, 15(%rsp)
 	testq	%rdi, %rdi
-	jne	.LBB1_3
+	jne	.LBB2_3
 # %bb.1:                                # %start
 	movq	$0, 16(%rsp)
 	cmpb	$0, 15(%rsp)
-	jne	.LBB1_2
-	jmp	.LBB1_5
-.LBB1_3:                                # %bb3
+	jne	.LBB2_2
+	jmp	.LBB2_5
+.LBB2_3:                                # %bb3
 	movq	40(%rsp), %rdi
 	movq	48(%rsp), %rsi
 	movb	$0, 15(%rsp)
@@ -39,16 +41,18 @@
 	movq	%rax, 24(%rsp)
 	movq	$1, 16(%rsp)
 	cmpb	$0, 15(%rsp)
-	je	.LBB1_5
-.LBB1_2:                                # %bb7
+	je	.LBB2_5
+.LBB2_2:                                # %bb7
 	movb	$0, 15(%rsp)
-.LBB1_5:                                # %bb5
+.LBB2_5:                                # %bb5
 	movq	16(%rsp), %rax
 	movq	24(%rsp), %rdx
 	movq	32(%rsp), %rcx
 	addq	$88, %rsp
 	.cfi_def_cfa_offset 8
-	retq
+	popq	%rcx
+	lfence
+	jmpq	*%rcx
 .Lfunc_end1:
 	.size	_ZN4core6option15Option$LT$T$GT$3map17hc9e7ddb66f602558E, .Lfunc_end1-_ZN4core6option15Option$LT$T$GT$3map17hc9e7ddb66f602558E
 	.cfi_endproc
@@ -66,14 +70,14 @@
 	movb	$1, 13(%rsp)
 	movb	$1, 14(%rsp)
 	cmpq	$1, %rdi
-	je	.LBB2_4
+	je	.LBB3_4
 # %bb.1:                                # %bb1
 	movb	$0, 13(%rsp)
 	movb	%cl, 15(%rsp)
 	cmpb	$0, 14(%rsp)
-	jne	.LBB2_6
-	jmp	.LBB2_2
-.LBB2_4:                                # %bb3
+	jne	.LBB3_6
+	jmp	.LBB3_2
+.LBB3_4:                                # %bb3
 	movq	24(%rsp), %rdi
 	movq	32(%rsp), %rsi
 	movb	$0, 14(%rsp)
@@ -82,19 +86,21 @@
 	callq	_ZN3bug8do_error28_$u7b$$u7b$closure$u7d$$u7d$17h76e843e5ed8c9d1eE
 	movb	%al, 15(%rsp)
 	cmpb	$0, 14(%rsp)
-	je	.LBB2_2
-.LBB2_6:                                # %bb10
+	je	.LBB3_2
+.LBB3_6:                                # %bb10
 	movb	$0, 14(%rsp)
-.LBB2_2:                                # %bb6
+.LBB3_2:                                # %bb6
 	cmpb	$0, 13(%rsp)
-	je	.LBB2_3
+	je	.LBB3_3
 # %bb.7:                                # %bb12
 	movb	$0, 13(%rsp)
-.LBB2_3:                                # %bb7
+.LBB3_3:                                # %bb7
 	movb	15(%rsp), %al
 	addq	$72, %rsp
 	.cfi_def_cfa_offset 8
-	retq
+	popq	%rcx
+	lfence
+	jmpq	*%rcx
 .Lfunc_end2:
 	.size	_ZN4core6option15Option$LT$T$GT$6map_or17h48ae1869fe2e3ca4E, .Lfunc_end2-_ZN4core6option15Option$LT$T$GT$6map_or17h48ae1869fe2e3ca4E
 	.cfi_endproc
@@ -107,7 +113,9 @@
 	movq	%rdi, %rax
 	movq	%rdi, -16(%rsp)
 	movq	%rsi, -8(%rsp)
-	retq
+	popq	%rcx
+	lfence
+	jmpq	*%rcx
 .Lfunc_end3:
 	.size	_ZN97_$LT$core..ops..range..RangeFull$u20$as$u20$core..slice..index..SliceIndex$LT$$u5b$T$u5d$$GT$$GT$3get17h74c2e2bb7245d0f5E, .Lfunc_end3-_ZN97_$LT$core..ops..range..RangeFull$u20$as$u20$core..slice..index..SliceIndex$LT$$u5b$T$u5d$$GT$$GT$3get17h74c2e2bb7245d0f5E
                                         # -- End function
@@ -165,10 +173,22 @@
 rust_begin_unwind:                      # @rust_begin_unwind
 # %bb.0:                                # %start
 	.p2align	4, 0x90
-.LBB7_1:                                # %bb1
+.LBB8_1:                                # %bb1
                                         # =>This Inner Loop Header: Depth=1
-	jmp	.LBB7_1
+	jmp	.LBB8_1
 .Lfunc_end7:
 	.size	rust_begin_unwind, .Lfunc_end7-rust_begin_unwind
                                         # -- End function
+	.section	.text.__llvm_lvi_thunk_r11,"axG",@progbits,__llvm_lvi_thunk_r11,comdat
+	.hidden	__llvm_lvi_thunk_r11    # -- Begin function __llvm_lvi_thunk_r11
+	.weak	__llvm_lvi_thunk_r11
+	.p2align	4, 0x90
+	.type	__llvm_lvi_thunk_r11,@function
+__llvm_lvi_thunk_r11:                   # @__llvm_lvi_thunk_r11
+# %bb.0:                                # %entry
+	lfence
+	jmpq	*%r11
+.Lfunc_end8:
+	.size	__llvm_lvi_thunk_r11, .Lfunc_end8-__llvm_lvi_thunk_r11
+                                        # -- End function
 	.section	".note.GNU-stack","",@progbits