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stage1: make @truncate to an integer type of different sign an error at comptime too

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This commit is contained in:
Matthew Borkowski
2021-05-28 23:32:19 -04:00
committed by Veikka Tuominen
parent ff0a15bb7a
commit 9ac6d28614
3 changed files with 53 additions and 17 deletions
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test/compile_errors.zig
+16 -3
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@@ -6031,14 +6031,27 @@ pub fn addCases(cases: *tests.CompileErrorContext) void {
});
cases.add("truncate sign mismatch",
\\fn f() i8 {
\\export fn entry1() i8 {
\\ var x: u32 = 10;
\\ return @truncate(i8, x);
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
\\export fn entry2() u8 {
\\ var x: i32 = -10;
\\ return @truncate(u8, x);
\\}
\\export fn entry3() i8 {
\\ comptime var x: u32 = 10;
\\ return @truncate(i8, x);
\\}
\\export fn entry4() u8 {
\\ comptime var x: i32 = -10;
\\ return @truncate(u8, x);
\\}
, &[_][]const u8{
"tmp.zig:3:26: error: expected signed integer type, found 'u32'",
"tmp.zig:7:26: error: expected unsigned integer type, found 'i32'",
"tmp.zig:11:26: error: expected signed integer type, found 'u32'",
"tmp.zig:15:26: error: expected unsigned integer type, found 'i32'",
});
cases.add("try in function with non error return type",