Info crashes while MALLOC_CHECK_ env. var. is set

[Erkki Arus]

          Hi!

I'm using RedHat Linux 7.3 and info version 4.2 installed from RPM 
package 'info-4.2-4'. The problem is, info is crashing and core is 
dumped immediately after running if the MALLOC_CHECK_ environment 
variable is set to 2. If the environment variable is set either to 1 or 
to 0, or is declared not at all then the program is running well. The 
problem was presented also in info version 4.1, but wasn't presented in 
previous  release (7.2) of RedHat Linux (what was the version of info 
there, I don't remember, sorry). I've installed packages 
'glibc-2.2.5-37' and 'ncurses-5.2-26'.

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Best Regards, Erkki Arus