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49 lines
1.0 KiB
Plaintext
49 lines
1.0 KiB
Plaintext
// #target: macos-x64
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module test;
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import std::io;
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faultdef OH_NO;
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const int C = 1;
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fn void main()
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{
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(void)do_thing();
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}
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fn void? do_thing()
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{
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int* a_value;
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// Change 'C' below to any integer value and the assert goes away.
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*a_value = may_fault(C)!;
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io::printfn("Value: %d", *a_value);
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}
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macro may_fault($incoming)
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{
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$switch $incoming:
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$case 1: return OH_NO?;
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$default: return 0;
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$endswitch
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}
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/* #expect: test.ll
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%"char[]" = type { ptr, i64 }
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@test.C = local_unnamed_addr constant i32 1, align 4
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@test.OH_NO = linkonce constant %"char[]" { ptr @test.OH_NO.nameof, i64 11 }, align 8
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@test.OH_NO.nameof = internal constant [12 x i8] c"test::OH_NO\00", align 1
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define i64 @test.do_thing() #0 {
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entry:
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%a_value = alloca ptr, align 8
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%error_var = alloca i64, align 8
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store ptr null, ptr %a_value, align 8
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store i64 ptrtoint (ptr @test.OH_NO to i64), ptr %error_var, align 8
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br label %guard_block
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guard_block: ; preds = %entry
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%0 = load i64, ptr %error_var, align 8
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ret i64 %0
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}
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