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Fix UB in js_dtoa1

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This commit is contained in:
Saúl Ibarra Corretgé 2023-12-22 22:50:02 +01:00
parent fd6e039770
commit e53d622359
1 changed files with 3 additions and 1 deletions
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4
quickjs.c
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@ -11492,8 +11492,10 @@ static void js_dtoa1(char *buf, double d, int radix, int n_digits, int flags)
} else if (flags == JS_DTOA_VAR_FORMAT) {
int64_t i64;
char buf1[70], *ptr;
if (d > (double)MAX_SAFE_INTEGER || d < (double)-MAX_SAFE_INTEGER)
goto generic_conv;
i64 = (int64_t)d;
if (d != i64 || i64 > MAX_SAFE_INTEGER || i64 < -MAX_SAFE_INTEGER)
if (d != i64)
goto generic_conv;
/* fast path for integers */
ptr = i64toa(buf1 + sizeof(buf1), i64, radix);