Check for bad decimal locations

1 files changed, 9 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 4fb011e..3e3c8d6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -248,6 +248,15 @@ fn parse_float(location: &Location, string: &str) -> Result<f64> {
 	}) {
 		return Err(bad_float());
 	}
+	for (i, c) in string.bytes().enumerate() {
+		if c == b'.' {
+			// decimal point must be preceded and followed by a digit
+			let ok = |j| string.as_bytes().get(j).is_some_and(u8::is_ascii_digit);
+			if !(ok(i.wrapping_sub(1)) && ok(i + 1)) {
+				return Err(bad_float());
+			}
+		}
+	}
 	string.parse().map_err(|_| bad_float())
 }