blob: d83b9c89d388a1e661f97bddff17ea9248994711 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
# Copyright (C) 2024 Free Software Foundation, Inc.
# Contributed by David Malcolm <dmalcolm@redhat.com>.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
# Get the 1-based line for LINENUM from FILENAME as a string
proc get_line { filename linenum } {
set f [open $filename]
set lines [split [read $f] \n]
close $f
return [lindex $lines [expr $linenum - 1] ]
}
# Print a backtrace of the Tcl interpreter's stack, showing
# frames, levels, source file and line where available.
#
# This isn't used anywhere, but is occasionally very helpful
# to use when debugging.
proc print_stack_backtrace {} {
set current_frame_level [info frame]
puts "VVV START OF BACKTRACE VVV"
for {set i [expr $current_frame_level - 1]} {$i > 0} {incr i -1} {
set frame [info frame $i]
if { [dict exists $frame "level"] } {
set level_num [dict get $frame "level"]
set relative_level_offset [expr 1 - $level_num]
set level [info level $relative_level_offset]
set procname [lindex $level 0]
# TODO: args = rest of $level, but this can be very long
} else {
set procname ""
}
set suffix ""
if { $procname != "" } {
set suffix " in proc $procname"
}
if { [dict get $frame "type"] == "source" } {
set fname [dict get $frame "file"]
set line [dict get $frame "line"]
puts " $fname:$line: frame $i$suffix"
puts " $line | [get_line $fname $line]"
} else {
set type [dict get $frame "type"]
puts " <$type>: frame $i$suffix"
}
}
puts "^^^ END OF BACKTRACE ^^^"
}
|
