[Buildroot] [Bug 5018] New: dialog broken: exits with assert in uClibc

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=5018

           Summary: dialog broken: exits with assert in uClibc
           Product: buildroot
           Version: 2012.02
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
        AssignedTo: unassigned at buildroot.uclibc.org
        ReportedBy: zkdigisec at gmail.com
                CC: buildroot at uclibc.org
   Estimated Hours: 0.0


dialog can easily be made do abort with an assert, leaving the terminal in an
undefined state.

For example:
1. Start dialog: "dialog --yesno test 0 0"
2. Hit the right arrow key

Results in:
dialog: libc/misc/ctype/ctype.c: 320: toupper: Assertion '...' failed. Aborted

The reason is that dialog calls the uClibc function toupper() with a character
code > 255, resulting in an assert and fatal exit.

This could be seen as a problem in dialog.

But it could also be fixed in buildroot by changing the default uClibc
configuration in uClibc-0.9.33.config:

-UCLIBC_HAS_CTYPE_ENFORCED=y
+# UCLIBC_HAS_CTYPE_ENFORCED is not set

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