Commit 4b64c777ee465abb1f4a6bf2d31ba39805d5fa54 | zig

author	Andrew Kelley <andrew@ziglang.org> 2018-01-18 17:47:21-05:00
committer	Andrew Kelley <andrew@ziglang.org> 2018-01-18 17:47:21-05:00
log	4b64c777ee465abb1f4a6bf2d31ba39805d5fa54
tree	2295fd5b511f1fe46b69905fa383c9389044572a
parent	0fc645ab7084c1812d367583b37218359b21c02c

closes #698

2 files changed, 14 insertions(+), 1 deletions(-)

src/ir.cpp+7

...	...	@@ -8816,6 +8816,13 @@ static TypeTableEntry ir_analyze_bit_shift(IrAnalyze ira, IrInstructionBinOp *
8816	8816	if (op_id == IrBinOpBitShiftLeftLossy) {
8817	8817	op_id = IrBinOpBitShiftLeftExact;
8818	8818	}
	8819
	8820	if (casted_op2->value.data.x_bigint.is_negative) {
	8821	Buf *val_buf = buf_alloc();
	8822	bigint_append_buf(val_buf, &casted_op2->value.data.x_bigint, 10);
	8823	ir_add_error(ira, casted_op2, buf_sprintf("shift by negative value %s", buf_ptr(val_buf)));
	8824	return ira->codegen->builtin_types.entry_invalid;
	8825	}
8819	8826	} else {
8820	8827	TypeTableEntry *shift_amt_type = get_smallest_unsigned_int_type(ira->codegen,
8821	8828	op1->value.type->data.integral.bit_count - 1);

test/compile_errors.zig+7-1

...	...	@@ -1,13 +1,19 @@
1	1	const tests = @import("tests.zig");
2	2
3	3	pub fn addCases(cases: &tests.CompileErrorContext) {
	4	cases.add("shift by negative comptime integer",
	5	\\comptime {
	6	\\ var a = 1 >> -1;
	7	\\}
	8	, ".tmp_source.zig:2:18: error: shift by negative value -1");
	9
4	10	cases.add("@panic called at compile time",
5	11	\\export fn entry() {
6	12	\\ comptime {
7	13	\\ @panic("aoeu");
8	14	\\ }
9	15	\\}
10		, "error: encountered @panic at compile-time");
	16	, ".tmp_source.zig:3:9: error: encountered @panic at compile-time");
11	17
12	18	cases.add("wrong return type for main",
13	19	\\pub fn main() -> f32 { }