Error - Segmentation fault in malloc_common.extend_brk, on AIX - Off-Topic

An exe of Pure C Code with Embedded SQLs resulting in core dump.on AIX 5.3L

Created a DEBUG Exe for the same which gave the Error(details below)

"Segmentation fault in malloc_common.extend_brk [/usr/lib/libc_r.a]"

Any pointers will help.

Thanks in advance folks

ERROR DETAILS

$ dbx core

warning: Unable to access address 0xf0a1fc4c from core

warning: Unable to access address 0xf0a1fc50 from core

warning: Unable to access address 0xf0a1fc50 from core

warning: Unable to access address 0xf0a1fc54 from core

warning: Unable to access address 0xf03878a8 from core

pthdb_session.c, 540: 1 PTHDB_CALLBACK (callback failed)

pthreaded.c, 1941: PTHDB_CALLBACK (callback failed)

Segmentation fault in malloc_common.extend_brk [/usr/lib/libc_r.a] at 0xd025c774

0xd025c774 (extend_brk+0xc8) 90040004 stw r0,0x4(r4)

(dbx) where

warning: Unable to access address 0xf03878a8 from core

pthdb_session.c, 540: 1 PTHDB_CALLBACK (callback failed)

pthreaded.c, 1941: PTHDB_CALLBACK (callback failed)

malloc_common.extend_brk(internal error: assertion failed at line 3595 in file frame.c

??, internal error: assertion failed at line 3595 in file frame.c

??, internal error: assertion failed at line 3595 in file frame.c

??) at 0xd025c77

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