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Bug #68905 Incorrect printf
Submitted: 2015-01-24 19:29 UTC Modified: 2015-01-27 13:27 UTC
From: bugreports at internot dot info Assigned:
Status: Not a bug Package: *General Issues
PHP Version: 5.5.21 OS: Linux Ubuntu 14.04
Private report: No CVE-ID: None
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 [2015-01-24 19:29 UTC] bugreports at internot dot info 
Description:
------------
Hi,

In /ext/standard/var.c:

439                tmp_len = spprintf(&tmp_str, 0,"%.*H", PG(serialize_precision), Z_DVAL_PP(struc));


This is wrong on two levels:

the mismatch of arguments(2, instead of 1), and the invalid conversion.


Thanks

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 [2015-01-24 19:31 UTC] bugreports at internot dot info 
Same in /ext/pdo/pdo_stmt.c:
                        int len = spprintf(&p, 0, "%.*H", (int) EG(precision), Z_DVAL_P(param->parameter));

and in /ext/json/json.c:
                                        len = spprintf(&d, 0, "%.*k", (int) EG(precision), dbl);


and
                                        int l = spprintf(&tmp, 0, "%.*k", (int) EG(precision), d);
 [2015-01-27 13:27 UTC] johannes@php.net
-Status: Open +Status: Not a bug
 [2015-01-27 13:27 UTC] johannes@php.net 
The * in the format indicates that a precision is provided. Thus the code is correct.

See spprintf implementation: http://lxr.php.net/xref/PHP_TRUNK/main/spprintf.c#306
 
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