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Fix #2122

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This commit is contained in:
Jeroen van Rijn
2022-10-09 21:34:43 +02:00
parent 9870e43ac0
commit 4c78ba2152
2 changed files with 13 additions and 2 deletions
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9
core/strconv/strconv.odin
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@@ -575,9 +575,11 @@ parse_f64 :: proc(str: string, n: ^int = nil) -> (value: f64, ok: bool) {
i := 0
sign: f64 = 1
seen_sign := true
switch s[i] {
case '-': i += 1; sign = -1
case '+': i += 1
case: seen_sign = false
}
for ; i < len(s); i += 1 {
@@ -677,8 +679,13 @@ parse_f64 :: proc(str: string, n: ^int = nil) -> (value: f64, ok: bool) {
for exp > 0 { scale *= 10; exp -= 1 }
}
}
s = s[i:]
// If we only consumed a sign, return false
if i == 1 && seen_sign {
return 0, false
}
s = s[i:]
if frac {
value = sign * (value/scale)
} else {

6
tests/issues/test_issue_2087.odin
View File

@@ -10,9 +10,13 @@ test_parse_float :: proc(t: ^testing.T) {
{
f, ok := strconv.parse_f64("1.2")
testing.expect(t, ok && f == 1.2, "expected f64(1.2), fully consumed")
f, ok = strconv.parse_f64("1.2a")
testing.expect(t, !ok && f == 1.2, "expected f64(1.2), partially consumed")
f, ok = strconv.parse_f64("+")
testing.expect(t, !ok && f == 0.0, "expected f64(0.0), with ok=false")
f, ok = strconv.parse_f64("-")
testing.expect(t, !ok && f == 0.0, "expected f64(0.0), with ok=false")
f, ok = strconv.parse_f64("inf")
testing.expect(t, ok && math.classify(f) == math.Float_Class.Inf, "expected f64(+inf), fully consumed")