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Bug #764

closed

sscanf() does not support integer variables of a specific size

Added by Jörg Riesmeier about 8 years ago. Updated over 5 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Jörg Riesmeier
Category:
Library
Target version:
-
Start date:
2017-06-23
Due date:
% Done:

100%

Estimated time:
Module:
Operating System:
Compiler:

Description

At various places in the DCMTK, sscanf() is used to convert character string into an integer value. The current approach...

    Uint32 value = 0;
#if SIZEOF_LONG == 8
    if (sscanf(ptr, "%u", &value) == 1)
#else
    if (sscanf(ptr, "%lu", &value) == 1)
#endif

... is not 100% portable when the integer variable has a specific size (number of bits), e.g. Uint32 or Sint32. This first showed up on a 32-bit Linux (Debian) system. Not sure whether this only happens when C++11 support is enabled.

Maybe, there should be something like OFStandard::sscanUint32() and OFStandard::sscanSint32(), i.e. global functions that provide this functionality.

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