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fix printf negative infinity #15965

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fix printf negative infinity #15965

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092b17b
fix printf negative infinity
divinity76 Sep 20, 2024
13ae1f8
comment cleanup
divinity76 Sep 20, 2024
0d4dc4d
Update ext/standard/formatted_print.c
divinity76 Sep 20, 2024
2fa8151
strlen
divinity76 Sep 21, 2024
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7 changes: 4 additions & 3 deletions ext/standard/formatted_print.c
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Original file line number Diff line number Diff line change
Expand Up @@ -246,9 +246,10 @@ php_sprintf_appenddouble(zend_string **buffer, size_t *pos,
}

if (zend_isinf(number)) {
is_negative = (number<0);
php_sprintf_appendstring(buffer, pos, "INF", 3, 0, padding,
alignment, 3, is_negative, 0, always_sign);
is_negative = (number<0);
char *str = is_negative ? "-INF" : "INF";
php_sprintf_appendstring(buffer, pos, str, strlen(str), 0, padding,
alignment, strlen(str), is_negative, 0, always_sign);
return;
}

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4 changes: 4 additions & 0 deletions tests/strings/002.phpt
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,8 @@ try {
} catch(\ValueError $e) {
print('Error found: '.$e->getMessage()."\n");
}
printf("printf test 31:%.17g\n", INF);
printf("printf test 32:%.17g\n", -INF);
vprintf("vprintf test 1:%2\$-2d %1\$2d\n", array(1, 2));


Expand Down Expand Up @@ -83,4 +85,6 @@ printf test 27:3 1 2
printf test 28:02 1
printf test 29:2 1
printf test 30:Error found: Argument number specifier must be greater than zero and less than 2147483647
printf test 31:INF
printf test 32:-INF
vprintf test 1:2 1
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