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printf: trim leading whitespace when parsing numeric values

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Trim leading whitespace from numeric input to printf.
This commit is contained in:
Dan Robertson 2025-03-20 17:49:24 +00:00
parent af7411a933
commit 1a0bc30f17
2 changed files with 66 additions and 3 deletions
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26
tests/by-util/test_printf.rs
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@ -1053,3 +1053,29 @@ fn float_switch_switch_decimal_scientific() {
.succeeds()
.stdout_only("1e-05");
}
#[test]
fn float_arg_with_whitespace() {
new_ucmd!()
.args(&["%f", " \u{0020}\u{000d}\t\n0.000001"])
.succeeds()
.stdout_only("0.000001");
new_ucmd!()
.args(&["%f", "0.1 "])
.fails()
.stderr_contains("value not completely converted");
// Unicode whitespace should not be allowed in a number
new_ucmd!()
.args(&["%f", "\u{2029}0.1"])
.fails()
.stderr_contains("expected a numeric value");
// A input string with a whitespace special character that has
// not already been expanded should fail.
new_ucmd!()
.args(&["%f", "\\t0.1"])
.fails()
.stderr_contains("expected a numeric value");
}