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Operating Systems Linux Red Hat Free() corrupted unsorted chunks Post 302843437 by jim mcnamara on Tuesday 13th of August 2013 08:19:41 AM
Old 08-13-2013
Solaris has a high performance malloc library for threading. It's behavior may be different enough from Linux, such that the the problem did not occur on Solaris, but does show up in Linux.

But that is grabbing at straws.

I would suspect that while porting someone altered code. Is this a verbatim copy of the Solaris code? i.e., do checksums match? If you want to fix this mess, don't simply say 'yes', do a checksum.

If checksums match for the code, then grep the make files for the word malloc to see if the library (specifically Solaris (lib)mtmalloc) I mentioned are being used. If there is a Linux version of it with the same name it probably has nothing in common with Solaris libmtmalloc. Do not use it. RHEL links threaded Pro*C just fine normally.
 

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curs_memleaks(3X)														 curs_memleaks(3X)

NAME
_nc_freeall _nc_free_and_exit - curses memory-leak checking SYNOPSIS
#include <curses.h> void _nc_freeall(void); void _nc_free_and_exit(int); DESCRIPTION
These functions are used to simplify analysis of memory leaks in the ncurses library. They are normally not available; they must be con- figured into the library at build time using the --disable-leaks option. That compiles-in code that frees memory that normally would not be freed. Any implementation of curses must not free the memory associated with a screen, since (even after calling endwin), it must be available for use in the next call to refresh. There are also chunks of memory held for performance reasons. That makes it hard to analyze curses ap- plications for memory leaks. To work around this, one can build a debugging version of the ncurses library which frees those chunks which it can, and provides these functions to free all of the memory allocated by the ncurses library. The _nc_free_and_exit function is the preferred one since some of the memory which is freed may be required for the application to continue running. Its parameter is the code to pass to the exit routine. RETURN VALUE
These functions do not return a value. PORTABILITY
These functions are not part of the XSI interface. SEE ALSO
curses(3X). curs_memleaks(3X)
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