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This article is a part of working with bug reports.
Here is how you can extract call stack information from various formats of call stacks.
Delphi
TMainForm.Button1Click
:7796d0e9 kernel32.BaseThreadInitThunk+ 0x12
| • | Code address. It's a first part of the line in form ':7796d0e9' (starting with ':'). This value is usually missed - unless line represents code without debug information (like system DLLs, for example). |
| • | Stack address. Not specified. |
| • | Executable module name. If code address is specified, then this is value right after code address - for example ':7796d0e9 kernel32'. If code address is not specified, then this value is omitted. |
| • | Code offset. Not specified. |
| • | Unit name. First word in line, if code address is not present. For example, 'Forms'. If code address is present, then this value is skipped. |
| • | Class name. Follows unit name after '.'. For example, 'Forms.TCustomForm'. |
| • | Method or routine name. If code address is present - follows executable module name. For example, ':7796d0e9 kernel32.BaseThreadInitThunk'. Otherwise it follows class name (if present) or unit name (if class name is not present). For example, 'Forms.TCustomForm.Create'. |
| • | Line number. Not specified. |
| • | Line number offset. Not specified. |
| • | Code offset from procedure's start. If code address is specified, then this is last value in form: '+ 0x12'. For example, ':7796d0e9 kernel32.BaseThreadInitThunk+ 0x12'. If code address is not specified, then this value is not present. |
EurekaLog (raw text)
|7FFFFFFE|04|00000000|00615CD8|Project44.exe|00215CD8|Unit1.pas|Unit1|TMainForm|Button1Click|31[20]|
| • | Code address. It's a value in 'Address' column. |
| • | Stack address. It's a value in 'Stack' column. |
| • | Executable module name. It's a value in 'Module' column. |
| • | Code offset. It's a value in 'Offset' column. It's offset from module start (i.e. including $1000 offset for code's section). |
| • | Unit name. It's a value in 'Unit' column. |
| • | Class name. It's a value in 'Class' column. |
| • | Method or routine name. It's a value in 'Procedure/method' column. |
| • | Line number. It's first number in 'Line' column. For example, '33[3]'. |
| • | Line number offset. It's number inside [] in 'Line' column. For example, '33[3]'. |
| • | Code offset from procedure's start. Not specified. |
EurekaLog (Viewer)
| • | Code address. It's a value in 'Address' column. |
| • | Stack address. It's a value in 'Stack' column. |
| • | Executable module name. It's a value in 'Module' column. |
| • | Code offset. It's a value in 'Offset' column. It's offset from module start (i.e. including $1000 offset for code's section). |
| • | Unit name. It's a value in 'Unit' column. |
| • | Class name. It's a value in 'Class' column. |
| • | Method or routine name. It's a value in 'Procedure/method' column. |
| • | Line number. It's a value in 'Line' column. |
| • | Line number offset. It's a value in 'Rel.line' column. |
| • | Code offset from procedure's start. Not specified. |
FastMM
4CC5DC [Unit1.pas][Unit1][Unit1.TMainForm.Button1Click][31]
| • | Code address. It's a first number in line. For example, '4C0913'. |
| • | Stack address. Not specified. |
| • | Executable module name. Not specified. |
| • | Code offset. Not specified. |
| • | Unit name. Unit file name is a first word inside [], follows code address. May be skipped if not available. For example, '4C0913 [Forms]'. Unit name is also a first word inside next [] pair. For example, '4C0913 [Forms][Forms.TCustomForm.AfterConstruction]'. |
| • | Class name. Follows unit name after '.'. For example, '4C0913 [Forms][Forms.TCustomForm.AfterConstruction]'. |
| • | Method or routine name. Follows class name (if present) or unit name (if class name is not present, but unit name is present). '.'-separated. For example, '4C0913 [Forms][Forms.TCustomForm.AfterConstruction]'. May also follow code address, if unit name is not present. For example, '75B94911 [BaseThreadInitThunk]'. |
| • | Line number. Number inside last's []. For example, '4CC5DC [Unit15.pas][Unit15][Unit15.TForm15.FormCreate][43]'. |
| • | Line number offset. Not specified. |
| • | Code offset from procedure's start. Not specified. |
JCL
(00087ABC){Project1.exe} [00488ABC] Unit1.TMainForm.Button1Click (Line 31, "Unit1.pas" + 0) + $0
| • | Code address. It's a first number in []. Usually follows executable module name. For example, '(00087ABC){Project1.exe} [00488ABC]'. |
| • | Stack address. Not specified. |
| • | Executable module name. It's a first word in {}. Follows code offset, if it's present. Otherwise it's a first value in the line. For example, '(00087ABC){Project1.exe}'. |
| • | Code offset. First value in line, if present. It's inside (). For example, '(00087ABC)'. This is offset from start of code section (i.e. it doesn't include $1000 offset). |
| • | Unit name. First word in line without any kind brackets. For example, '(00087ABC){Project1.exe} [00488ABC] Unit1'. |
| • | Class name. Follows unit name after '.'. For example, '(00055523){Project1.exe} [00456523] Controls.TWinControl'. |
| • | Method or routine name. Follows class name (if present) or unit name (if class name is not present, but unit name is present). '.'-separated. For example, '(00087ABC){Project1.exe} [00488ABC] Unit1.A'. |
| • | Line number. It's number after "Line" word. For example, '(00087ABC){Project1.exe} [00488ABC] Unit1.A (Line 44)' |
| • | Line number offset. Follows line number and unit file name. Has a form of '+ 1'. For example, '(00087ABC){Project1.exe} [00488ABC] Unit1.A (Line 44, "Unit1.pas" + 0)'. |
| • | Code offset from procedure's start. Follows ()-part with line number information. Has a form of '+ $6C'. For example, '(00087ABC){Project1.exe} [00488ABC] Unit1.A (Line 44, "Unit1.pas" + 0) + $0'. |
madExcept
0086ad33 +001f Project1.exe Unit1 31 +1 TMainForm.Button1Click
| • | Code address. It's a first part of the line. For example, '0086ad33'. |
| • | Stack address. Not specified. |
| • | Executable module name. It a first word in line. It follows code offset. Space-delimited from other parts. For example, '0086ad33 +001f Project1.exe'. |
| • | Code offset. Not specified. |
| • | Unit name. Second word in line, follows executable module name. For example, '0086ad33 +001f Project1.exe OleCtrls'. May be skipped if not available. |
| • | Class name. Follows line number information. Class and method names are last information in the line. For example, '0086ad33 +001f Project1.exe OleCtrls 640 +11 TOleControl.Destroy'. |
| • | Method or routine name. Follows class name (if present) or line numbers section (if class name is not present, but unit name is present). For example, '0086ad33 +001f Project1.exe OleCtrls 640 +11 TOleControl.Destroy'. |
| • | Line number. Number which follows unit name. For example, '0086ad33 +001f Project1.exe OleCtrls 640 +11'. |
| • | Line number offset. It follows line number. Has a form '+16'. For example, '0086ad33 +001f Project1.exe OleCtrls 640 +11'. |
| • | Code offset from procedure's start. It follows code address. Has a form '+0009'. For example, '0086ad33 +001f'. |
Now, when you have all information, it's time to put it in use and try to find bug's location.
See also:
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Build date: 2023-09-11
Last edited: 2023-03-07
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