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std.fmt: fix overflow when formatting comptime_float

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Luca Ivaldi 2023-11-24 17:31:12 +01:00 committed by GitHub
parent 54f4abae2f
commit 3acb0e30a0
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1 changed files with 4 additions and 2 deletions
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6
lib/std/fmt.zig
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@ -1302,7 +1302,7 @@ pub fn formatFloatDecimal(
// We may have to zero pad, for instance 1e4 requires zero padding.
try writer.writeAll(float_decimal.digits[0..num_digits_whole_no_pad]);
var i = num_digits_whole_no_pad;
var i: usize = num_digits_whole_no_pad;
while (i < num_digits_whole) : (i += 1) {
try writer.writeAll("0");
}
@ -1360,7 +1360,7 @@ pub fn formatFloatDecimal(
// We may have to zero pad, for instance 1e4 requires zero padding.
try writer.writeAll(float_decimal.digits[0..num_digits_whole_no_pad]);
var i = num_digits_whole_no_pad;
var i: usize = num_digits_whole_no_pad;
while (i < num_digits_whole) : (i += 1) {
try writer.writeAll("0");
}
@ -2059,6 +2059,8 @@ test "comptimePrint" {
@setEvalBranchQuota(2000);
try std.testing.expectEqual(*const [3:0]u8, @TypeOf(comptimePrint("{}", .{100})));
try std.testing.expectEqualSlices(u8, "100", comptimePrint("{}", .{100}));
try std.testing.expectEqualStrings("30", comptimePrint("{d}", .{30.0}));
try std.testing.expectEqualStrings("30.0", comptimePrint("{d:3.1}", .{30.0}));
}
test "parse u64 digit too big" {