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b01d6b156c
This instruction is like `intcast`, but includes two safety checks: * Checks that the int is in range of the destination type * If the destination type is an exhaustive enum, checks that the int is a named enum value This instruction is locked behind the `safety_checked_instructions` backend feature; if unsupported, Sema will emit a fallback, as with other safety-checked instructions. This instruction is used to add a missing safety check for `@enumFromInt` truncating bits. This check also has a fallback for backends which do not yet support `safety_checked_instructions`. Resolves: #21946
24 lines
466 B
Zig
24 lines
466 B
Zig
const std = @import("std");
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pub fn panic(message: []const u8, _: ?*std.builtin.StackTrace, _: ?usize) noreturn {
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if (std.mem.eql(u8, message, "invalid enum value")) {
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std.process.exit(0);
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}
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std.process.exit(1);
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}
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pub fn main() u8 {
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var num: i5 = undefined;
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num = 14;
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const E = enum(u3) { a, b, c, d, e, f, g, h };
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const invalid: E = @enumFromInt(num);
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_ = invalid;
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return 1;
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}
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// run
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// backend=llvm
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// target=native
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