Re: Fix inappropriate uses of atol()

From: Peter Eisentraut <peter(at)eisentraut(dot)org>
To: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Fix inappropriate uses of atol()
Date: 2024-08-10 06:43:59
Message-ID: 56e97e55-a932-428e-aad0-9922c1befa14@eisentraut.org
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On 03.08.24 16:07, Heikki Linnakangas wrote:
> On 03/08/2024 14:04, Peter Eisentraut wrote:
>> I noticed (during [0]) to some uses of the function atol() seem
>> inappropriate.  Either they assume that sizeof(long)==8 and so might
>> truncate data if not, or they are gratuitous because the surrounding
>> code does not use the long type.  This patch fixes these, by using
>> atoll() or atoi() instead.  (There are still some atol() calls left
>> after this, which seemed ok to me.)
>>
>> In the past, Windows didn't have atoll(), but the online documentation
>> appears to indicate that this now works in VS 2015 and later, which is
>> what we support at the moment.  The Cirrus CI passes.
> +1 except for this one:
>
>> diff --git a/src/interfaces/ecpg/preproc/ecpg.trailer
>> b/src/interfaces/ecpg/preproc/ecpg.trailer
>> index b2aa44f36dd..8ac1c5c9eda 100644
>> --- a/src/interfaces/ecpg/preproc/ecpg.trailer
>> +++ b/src/interfaces/ecpg/preproc/ecpg.trailer
>> @@ -217,7 +217,7 @@ char_variable: cvariable
>>              enum ECPGttype type = p->type->type;
>>
>>              /* If we have just one character this is not a string */
>> -            if (atol(p->type->size) == 1)
>> +            if (atoi(p->type->size) == 1)
>>                      mmerror(PARSE_ERROR, ET_ERROR, "invalid data type");
>>              else
>>              {

I committed it without this hunk.

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