0 NULL
./dbg-support.tests: line 72: caller: -z: invalid option
caller: usage: caller [expr]
debug lineno: 78 main
debug lineno: 81 main
FUNCNAME main
debug lineno: 85 main
debug lineno: 30 fn1
debug lineno: 31 fn1
LINENO 31
debug lineno: 32 fn1
LINENO 32
debug lineno: 33 fn1
BASH_SOURCE[0] ./dbg-support.tests
debug lineno: 34 fn1
FUNCNAME[0] fn1
debug lineno: 35 fn1
debug lineno: 35 fn1 85 ./dbg-support.tests
debug lineno: 36 fn1
debug lineno: 36 fn1 85 main ./dbg-support.tests
debug lineno: 37 fn1
debug lineno: 37 fn1
debug lineno: 38 fn1
./dbg-support.tests: line 38: caller: foo: invalid number
caller: usage: caller [expr]
debug lineno: 38 fn1
debug lineno: 30 fn1
debug lineno: 25 print_return_trap
debug lineno: 26 print_return_trap
return lineno: 30 fn1
debug lineno: 27 print_return_trap
debug lineno: 86 main
debug lineno: 41 fn2
debug lineno: 42 fn2
fn2 here. Calling fn1...
debug lineno: 43 fn2
debug lineno: 30 fn1
debug lineno: 31 fn1
LINENO 31
debug lineno: 32 fn1
LINENO 32
debug lineno: 33 fn1
BASH_SOURCE[0] ./dbg-support.tests
debug lineno: 34 fn1
FUNCNAME[0] fn1
debug lineno: 35 fn1
debug lineno: 35 fn1 43 ./dbg-support.tests
debug lineno: 36 fn1
debug lineno: 36 fn1 43 fn2 ./dbg-support.tests
debug lineno: 37 fn1
debug lineno: 37 fn1 86 main ./dbg-support.tests
debug lineno: 38 fn1
./dbg-support.tests: line 38: caller: foo: invalid number
caller: usage: caller [expr]
debug lineno: 38 fn1
debug lineno: 30 fn1
debug lineno: 25 print_return_trap
debug lineno: 26 print_return_trap
return lineno: 30 fn1
debug lineno: 27 print_return_trap
debug lineno: 41 fn2
debug lineno: 25 print_return_trap
debug lineno: 26 print_return_trap
return lineno: 41 fn2
debug lineno: 27 print_return_trap
debug lineno: 87 main
debug lineno: 46 fn3
debug lineno: 47 fn3
LINENO 47
debug lineno: 48 fn3
BASH_SOURCE[0] ./dbg-support.tests
debug lineno: 51 fn3
debug lineno: 52 fn3
debug lineno: 53 fn3
debug lineno: 53 fn3
debug lineno: 54 fn3
debug lineno: 55 fn3
debug lineno: 56 fn3
fn3 called from file  `./dbg-support.tests' at line 0
debug lineno: 53 fn3
debug lineno: 53 fn3
debug lineno: 54 fn3
debug lineno: 55 fn3
debug lineno: 55 fn3
debug lineno: 56 fn3
main called from file  `./dbg-support.tests' at line 0
debug lineno: 53 fn3
debug lineno: 53 fn3
debug lineno: 59 fn3
debug lineno: 31 source
SOURCED LINENO 31
debug lineno: 32 source
SOURCED BASH_SOURCE[0] ./dbg-support.sub
debug lineno: 33 source
debug lineno: 16 sourced_fn
debug lineno: 17 sourced_fn
debug lineno: 18 sourced_fn
SOURCED FN LINENO 18
debug lineno: 21 sourced_fn
debug lineno: 22 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[0]: sourced_fn called from ./dbg-support.sub at line 33
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[1]: source called from ./dbg-support.tests at line 59
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[2]: fn3 called from ./dbg-support.tests at line 87
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[3]: main called from ./dbg-support.tests at line 0
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 16 sourced_fn
debug lineno: 25 print_return_trap
debug lineno: 26 print_return_trap
return lineno: 16 sourced_fn
debug lineno: 27 print_return_trap
debug lineno: 59 fn3
debug lineno: 25 print_return_trap
debug lineno: 26 print_return_trap
return lineno: 59 fn3
debug lineno: 27 print_return_trap
debug lineno: 46 fn3
debug lineno: 25 print_return_trap
debug lineno: 26 print_return_trap
return lineno: 46 fn3
debug lineno: 27 print_return_trap
debug lineno: 88 main
debug lineno: 31 source
SOURCED LINENO 31
debug lineno: 32 source
SOURCED BASH_SOURCE[0] ./dbg-support.sub
debug lineno: 33 source
debug lineno: 16 sourced_fn
debug lineno: 17 sourced_fn
debug lineno: 18 sourced_fn
SOURCED FN LINENO 18
debug lineno: 21 sourced_fn
debug lineno: 22 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[0]: sourced_fn called from ./dbg-support.sub at line 33
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[1]: source called from ./dbg-support.tests at line 88
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[2]: main called from ./dbg-support.tests at line 0
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 16 sourced_fn
debug lineno: 25 print_return_trap
debug lineno: 26 print_return_trap
return lineno: 16 sourced_fn
debug lineno: 27 print_return_trap
debug lineno: 88 main
debug lineno: 25 print_return_trap
debug lineno: 26 print_return_trap
return lineno: 88 main
debug lineno: 27 print_return_trap
debug lineno: 91 main
debug lineno: 94 main
LINENO 31
LINENO 32
BASH_SOURCE[0] ./dbg-support.tests
FUNCNAME[0] fn1
94 ./dbg-support.tests
94 main ./dbg-support.tests

./dbg-support.tests: line 38: caller: foo: invalid number
caller: usage: caller [expr]

debug lineno: 95 main
fn2 here. Calling fn1...
LINENO 31
LINENO 32
BASH_SOURCE[0] ./dbg-support.tests
FUNCNAME[0] fn1
43 ./dbg-support.tests
43 fn2 ./dbg-support.tests
95 main ./dbg-support.tests
./dbg-support.tests: line 38: caller: foo: invalid number
caller: usage: caller [expr]

debug lineno: 96 main
LINENO 47
BASH_SOURCE[0] ./dbg-support.tests
fn3 called from file  `./dbg-support.tests' at line 0
main called from file  `./dbg-support.tests' at line 0
SOURCED LINENO 31
SOURCED BASH_SOURCE[0] ./dbg-support.sub
SOURCED FN LINENO 18
FUNCNAME[0]: sourced_fn called from ./dbg-support.sub at line 33
FUNCNAME[1]: source called from ./dbg-support.tests at line 59
FUNCNAME[2]: fn3 called from ./dbg-support.tests at line 96
FUNCNAME[3]: main called from ./dbg-support.tests at line 0
debug lineno: 97 main
fn4 here. Calling fn3...
LINENO 47
BASH_SOURCE[0] ./dbg-support.tests
fn3 called from file  `./dbg-support.tests' at line 97
fn4 called from file  `./dbg-support.tests' at line 0
main called from file  `./dbg-support.tests' at line 0
SOURCED LINENO 31
SOURCED BASH_SOURCE[0] ./dbg-support.sub
SOURCED FN LINENO 18
FUNCNAME[0]: sourced_fn called from ./dbg-support.sub at line 33
FUNCNAME[1]: source called from ./dbg-support.tests at line 59
FUNCNAME[2]: fn3 called from ./dbg-support.tests at line 64
FUNCNAME[3]: fn4 called from ./dbg-support.tests at line 97
FUNCNAME[4]: main called from ./dbg-support.tests at line 0
debug lineno: 98 main
SOURCED LINENO 31
SOURCED BASH_SOURCE[0] ./dbg-support.sub
SOURCED FN LINENO 18
FUNCNAME[0]: sourced_fn called from ./dbg-support.sub at line 33
FUNCNAME[1]: source called from ./dbg-support.tests at line 98
FUNCNAME[2]: main called from ./dbg-support.tests at line 0
return lineno: 98 main
debug lineno: 101 main
debug lineno: 104 main
debug lineno: 31 source
SOURCED LINENO 31
debug lineno: 32 source
SOURCED BASH_SOURCE[0] ./dbg-support.sub
debug lineno: 33 source
debug lineno: 16 sourced_fn
debug lineno: 17 sourced_fn
debug lineno: 18 sourced_fn
SOURCED FN LINENO 18
debug lineno: 21 sourced_fn
debug lineno: 22 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[0]: sourced_fn called from ./dbg-support.sub at line 33
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[1]: source called from ./dbg-support.tests at line 104
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[2]: main called from ./dbg-support.tests at line 0
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 16 sourced_fn
debug lineno: 25 print_return_trap
debug lineno: 26 print_return_trap
return lineno: 16 sourced_fn
debug lineno: 27 print_return_trap
debug lineno: 104 main
debug lineno: 25 print_return_trap
debug lineno: 26 print_return_trap
return lineno: 104 main
debug lineno: 27 print_return_trap
debug lineno: 105 main
debug lineno: 108 main
debug lineno: 108 main
debug lineno: 109 main
debug lineno: 112 main
debug lineno: 108 main
debug lineno: 108 main
debug lineno: 109 main
debug lineno: 112 main
debug lineno: 108 main
debug lineno: 108 main
debug lineno: 109 main
debug lineno: 110 main
Hit 2
debug lineno: 112 main
debug lineno: 108 main
debug lineno: 108 main
debug lineno: 118 main
SOURCED FN LINENO 18 FUNCNAME[0]: sourced_fn called from ./dbg-support.tests at line 118 FUNCNAME[1]: main called from ./dbg-support.tests at line 0
debug lineno: 119 main
SOURCED FN LINENO 18 FUNCNAME[0]: sourced_fn called from ./dbg-support.tests at line 119 FUNCNAME[1]: main called from ./dbg-support.tests at line 0
debug lineno: 120 main
debug lineno: 121 main
SOURCED FN LINENO 18
FUNCNAME[0]: sourced_fn called from ./dbg-support.tests at line 121
FUNCNAME[1]: main called from ./dbg-support.tests at line 0
debug lineno: 125 main
debug lineno: 126 main
debug lineno: 16 sourced_fn
debug lineno: 17 sourced_fn
debug lineno: 18 sourced_fn
SOURCED FN LINENO 18
debug lineno: 21 sourced_fn
debug lineno: 22 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[0]: sourced_fn called from ./dbg-support.tests at line 126
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 24 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 25 sourced_fn
debug lineno: 26 sourced_fn
FUNCNAME[1]: main called from ./dbg-support.tests at line 0
debug lineno: 23 sourced_fn
debug lineno: 23 sourced_fn
debug lineno: 16 sourced_fn
debug lineno: 25 print_return_trap
debug lineno: 26 print_return_trap
return lineno: 16 sourced_fn
debug lineno: 27 print_return_trap
debug lineno: 129 main
debug lineno: 134 main
debug lineno: 138 main
got it
debug lineno: 146 main
debug lineno: 147 main
debug lineno: 148 main
debug lineno: 147 main
debug lineno: 148 main
debug lineno: 146 main
debug lineno: 147 main
debug lineno: 148 main
debug lineno: 147 main
debug lineno: 148 main
debug lineno: 152 main
main: calling f1
f1: calling f2
f2: calling f3
f3: calling callstack
deep 6
0 z
1 3
2 y
3 2
4 x
5 1
FUNCNAME stack: f3 f2 f1 main
39 f2 ./dbg-support3.sub
f3: returning
f2: return from f3
f1: return from f2
main: f1 returns