Detect binary prefix in intval() with base = 0#2182
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I don't really feel very happy about the code for sending the negative value to |
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Made the prefix check a little less terrible, I think. |
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Uff, looks like |
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When you do, be sure to check whitespace in the same manner it does. I think it uses the same rules as |
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@lt bump ... |
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@krakjoe I've added the whitespace checks, and a check for a unary '+' symbol. |
ext/standard/type.c
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| zval *num; | ||
| zend_long base = 10; | ||
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| zend_long strlen; |
ext/standard/type.c
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| if (tmpval[0] == '0' && tmpval[1] == 'b') { | ||
| /* This effectively causes the string to have two leading zeros */ | ||
| tmpval[1] = '0'; |
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Unfortunately doing this is not possible, as it may cause SHM corruption.
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Well that sucks, I was trying to avoid copying the string.
ext/standard/type.c
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| tmpval++; | ||
| } | ||
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| if (tmpval[0] == '0' && tmpval[1] == 'b') { |
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Do we accept 0X next to 0x in intval? If so, 0B should be supported here as well.
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A quick test shows 0X is accepted.
//TODO
Nikita informs me that the previous code could cause potential SHM corruption.
ext/standard/type.c
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| offset = 1; | ||
| } | ||
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| if (strval[offset] == '0' && (strval[offset + 1] == 'b' || strval[offset + 1] == 'B')) { |
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I think we're missing a base==0 check somewhere around here.
| --EXPECTF-- | ||
| --- Good Inputs --- | ||
| string(34) "0b11111111111111111111111111111111" | ||
| int(4294967295) |
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This is presumably going to have different output on 32 bit and 64 bit. We either need to fork the test or, more easily, drop one bit :)
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@krakjoe This fine for 7.1? |
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👍 |
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Merged via 4f7b498, thanks! |
5 participants
https://bugs.php.net/bug.php?id=73374
strtolldoesn't detect0bas a prefix so we have to fake it.