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STR #3376
| Application: | FLTK Library |
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| Status: | 1 - Closed w/Resolution |
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| Priority: | 3 - Moderate, e.g. unable to compile the software |
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| Scope: | 2 - Specific to an operating system |
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| Subsystem: | Core Library |
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| Summary: | Fl_Browser::item_draw() long integer overflow in strtol() on 32-bit platforms. |
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| Version: | 1.4.0 |
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| Created By: | TRH |
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| Assigned To: | AlbrechtS |
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| Fix Version: | 1.4.0 (SVN: v12252) |
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| Update Notification: | |
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Trouble Report Files:
Trouble Report Comments:
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| The Fl_Browser widget has an issue with some colors encoded in the format-string. If you want to use violet (Fl_Color)0xFF00FF00 (decimal 4278255360) as background color you end up with cyan instead (see attached screenshots).
This behavior is reproducible on 32-bit Linux and Windows with FLTK-1.3.4 and FLTK-1.4.x-r12219. Everything works fine on 64-bit Linux.
The Fl_Browser widget calls strtol() to parse fore- and background-colors. Since the size of long is 4 bytes on 32-bit Linux and Windows the result is an overflow.
Attachments:
Fl_Browser.patch – A possible solution for this STR.
browser.cxx – A reproducer. Can be compiled with fltk-config --compile
*.jpg – The result of the reproducer on given platforms. | |
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| #2 | AlbrechtS
07:42 Jun 04, 2017 |
| Fixed in Subversion repository.
Thanks for the report and the patch. Patch applied in svn r12252. | |
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| #3 | AlbrechtS
09:59 Jul 18, 2017 |
| Fixed in FLTK 1.3.5 svn as well (svn r 12334). | |
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