GDB, the GNU Project debugger, allows you to see what is going on `inside' another program while it executes -- or what another program was doing at the moment it crashed.
doc/ Makefile.am Makefile.in aclocal.m4 ansidecl.h configure configure.in doc.str makedoc.c iconvdata/ EUC-JP.irreversible Makefile.am Makefile.in SJIS.irreversible aclocal.m4 configure configure.in dummy.c euc-jp.c gconv-modules jis0201.c jis0201.h jis0208.c jis0208.h jis0212.c jis0212.h sjis.c libc/ argz/ Makefile.am Makefile.in argz_add.c argz_add_sep.c argz_append.c argz_count.c argz_create.c argz_create_sep.c argz_delete.c argz_extract.c argz_insert.c argz_next.c argz_replace.c argz_stringify.c buf_findstr.c buf_findstr.h dummy.c envz_add.c envz_entry.c envz_get.c envz_merge.c envz_remove.c envz_strip.c ctype/ Makefile.am Makefile.in _tolower.c _toupper.c ctype.tex ctype_.c isalnum.c isalpha.c isascii.c isblank.c iscntrl.c isdigit.c islower.c isprint.c ispunct.c isspace.c isupper.c iswalnum.c iswalpha.c iswblank.c iswcntrl.c iswctype.c iswdigit.c iswgraph.c iswlower.c iswprint.c iswpunct.c iswspace.c iswupper.c iswxdigit.c isxdigit.c errno/ iconv/ include/ locale/ machine/ misc/ posix/ reent/ search/ signal/ stdio/ stdio64/ stdlib/ string/ sys/ syscalls/ time/ unix/ Makefile.am Makefile.in aclocal.m4 configure configure.in libc.texinfo saber sys.tex libm/ testsuite/ ChangeLog MAINTAINERS Makefile.am Makefile.in Makefile.shared NEWS README acconfig.h acinclude.m4 aclocal.m4 configure configure.host configure.in libtool.m4 newlib.hin stamp-h.in