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Fix #14901: parseFloat parsing 0x successfully

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This commit is contained in:
Evin Yulo 2023-03-15 12:53:53 -04:00 committed by Veikka Tuominen
parent da0509750a
commit b3af5d076c
2 changed files with 3 additions and 0 deletions
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1
lib/std/fmt/parse_float.zig
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@ -119,6 +119,7 @@ test "fmt.parseFloat hex.f16" {
}
test "fmt.parseFloat hex.f32" {
try testing.expectError(error.InvalidCharacter, parseFloat(f32, "0x"));
try testing.expectEqual(try parseFloat(f32, "0x1p0"), 1.0);
try testing.expectEqual(try parseFloat(f32, "-0x1p-1"), -0.5);
try testing.expectEqual(try parseFloat(f32, "0x10p+10"), 16384.0);

2
lib/std/fmt/parse_float/parse.zig
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@ -107,6 +107,8 @@ fn parsePartialNumberBase(comptime T: type, stream: *FloatStream, negative: bool
tryParseDigits(MantissaT, stream, &mantissa, info.base);
var int_end = stream.offsetTrue();
var n_digits = @intCast(isize, stream.offsetTrue());
// the base being 16 implies a 0x prefix, which shouldn't be included in the digit count
if (info.base == 16) n_digits -= 2;
// handle dot with the following digits
var exponent: i64 = 0;