Something like Valgrind might spot some initial problem that doesn't immediately crash but eventually spirals out of control. It seems to support ARM linux now:
"20 October 2016: valgrind-3.12.0 is available. This release supports:
X86/Linux, AMD64/Linux, ARM32/Linux,
ARM64/Linux, PPC32/Linux, PPC64BE/Linux, PPC64LE/Linux, S390X/Linux,
MIPS32/Linux, MIPS64/Linux, ARM/Android, ARM64/Android,
MIPS32/Android, X86/Android, X86/Solaris, AMD64/Solaris, X86/MacOSX
10.10 and AMD64/MacOSX 10.10. There is also preliminary support for
X86/MacOSX 10.11/12, AMD64/MacOSX 10.11/12 and TILEGX/Linux.
For more details see the release notes
I don't know what the gcc version is on your Pi but if you have a recent enough one you might manage to use the address sanitiser option to get a similar result.