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Posted to bugs@apr.apache.org by bu...@apache.org on 2014/12/02 13:21:44 UTC
[Bug 57295] New: apr_atoi64 truncating MSb on large apr_uint64_t
number
https://issues.apache.org/bugzilla/show_bug.cgi?id=57295
Bug ID: 57295
Summary: apr_atoi64 truncating MSb on large apr_uint64_t number
Product: APR
Version: 1.5.0
Hardware: PC
Status: NEW
Severity: blocker
Priority: P2
Component: APR
Assignee: bugs@apr.apache.org
Reporter: carlosbar@gmail.com
Created attachment 32250
--> https://issues.apache.org/bugzilla/attachment.cgi?id=32250&action=edit
Patch for apr_private.h (.\include\arch\win32)
apr_atoi64, under Windows 7 64 bits (not sure about other versions), MSVC 2008
64 bits binaries, is truncating the Most significant bit for a large unsigned
64 bits number.
e.g:
...
apr_uint64_t ui64;
char b[512];
ui64 = 0xffffffffffffffff;
apr_snprintf(b,sizeof(b),"%"APR_UINT64_T_FMT,ui64);
ui64 = (apr_uint64_t) apr_atoi64(b);
// at this point, ui64 is 0x7fffffffffffffff, which is wrong
issue seems to be with function: _strtoi64
snippet from apr_private.h:
/* MSVC 7.0 introduced _strtoi64 */
#if _MSC_VER >= 1300 && _INTEGRAL_MAX_BITS >= 64 && !defined(_WIN32_WCE)
#define APR_INT64_STRFN _strtoi64
#endif
FIX: use _strtoui64 instead.
Patch attached for analysis.
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[Bug 57295] apr_atoi64 truncating MSb on large apr_uint64_t number
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=57295
Carlos Barcellos <ca...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
OS| |Windows 7
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