US 9,852,045 B2Granted

Debugging program code

AssigneeInternational Business Machines Corporation

InventorsPeng Chang, Chun Ling Li, ZhiGang Lin, Nan Shi, Xiao Feng Zhang

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Abstract

Embodiments for debugging program code are provided. In response to a debug comparison request, (i) a first set of debugging operations are initiated on a first portion of program code selected from an original version of a program, and (ii) a second set of debugging operations are initiated on a second portion of program code selected from a revised version of the program. The second portion of program code corresponds to the first portion of program code. Execution of the first and second portions of program code is synchronized. The first and second set of debugging operations are stopped in response to determine that at least one of a first and a second stop condition exists based, at least in part, on a comparison of the results from executing one or more lines of corresponding code from the first and second portions of program code.

Claims18

Dependent claims

A method for debugging program code, the method comprising:

in response to a debug comparison request, initiating, by one or more computer processors, (i) a first set of debugging operations on a first portion of program code that is selected from an original version of a program and (ii) a second set of debugging operations on a second portion of program code that is selected from a revised version of the program, wherein the second portion of program code corresponds to the first portion of program code;
synchronously executing, by one or more computer processors, a first line of code from the first portion of program code and a corresponding first line of code from the second portion of program code;
synchronously comparing, by one or more computer processes, a result of executing the first line of code from the first portion of program code to a result of executing the corresponding first line of code from the second portion of program code;
in response to determining, by one or more computer processors, that neither a first stop condition nor a second stop condition exist based on the comparison of the result of executing the first line of code from the first portion of program code and the result of executing the corresponding first line of code from the second portion of program code, synchronously executing, by one or more computer processors, a successive second line of code from the first portion of program code and a successive corresponding second line of code from the second portion of program code;
synchronously comparing, by one or more computer processes, a result of executing the second line of code from the first portion of program code to a result of executing a corresponding second line of code from the second portion of program code;
and
stopping, by one or more computer processors, the first set of debugging operations and the second set of debugging operations in response to determining, by one or more computer processors, that at least one of a first stop condition and a second stop condition exists based, at least in part, on the comparison of the result of executing the second line of code from the first portion of code to the result of executing the corresponding second line of code from the second portion of program code.

4 more elements

A computer program product for debugging program code, the computer program product comprising:

a computer readable storage medium and program instructions stored on the computer readable storage medium, the program instructions comprising:
program instructions to, in response to a debug comparison request, initiate (i) a first set of debugging operations on a first portion of program code that is selected from an original version of a program and (ii) a second set of debugging operations on a second portion of program code that is selected from a revised version of the program, wherein the second portion of program code corresponds to the first portion of program code;
program instructions to synchronously execute a first line of code from the first portion of program code and a corresponding first line of code from the second portion of program code;
program instructions to synchronously compare a result of executing the first line of code from the first portion of program code to a result of executing the corresponding first line of code from the second portion of program code;
program instructions to synchronously execute a successive second line of code from the first portion of program code and a successive corresponding second line of code from the second portion of program code in response to determining that neither a first stop condition nor a second stop condition exist based on the comparison of the result of executing the first line of code from the first portion of program code and the result of executing the corresponding first line of code from the second portion of program code;
program instructions to synchronously compare a result of executing the second line of code from the first portion of program code to a result of executing a corresponding second line of code from the second portion of program code;
and
program instructions to stop the first set of debugging operations and the second set of debugging operations in response to a determination that at least one of a first stop condition and a second stop condition exists based, at least in part, on the comparison of the result of executing the second line of code from the first portion of code to the result of executing the corresponding second line of code from the second portion of program code.

5 more elements

A computer system for debugging program code, the computer system comprising:

one or more computer processors;
one or more computer readable storage media;
program instructions stored on the one or more computer readable storage media for execution by at least one of the one or more processors, the program instructions comprising:
program instructions to, in response to a debug comparison request, initiate (i) a first set of debugging operations on a first portion of program code that is selected from an original version of a program and (ii) a second set of debugging operations on a second portion of program code that is selected from a revised version of the program, wherein the second portion of program code corresponds to the first portion of program code;
program instructions to synchronously execute a first line of code from the first portion of program code and a corresponding first line of code from the second portion of program code;
program instructions to synchronously compare a result of executing the first line of code from the first portion of program code to a result of executing the corresponding first line of code from the second portion of program code;
program instructions to synchronously execute a successive second line of code from the first portion of program code and a successive corresponding second line of code from the second portion of program code in response to determining that neither a first stop condition nor a second stop condition exist based on the comparison of the result of executing the first line of code from the first portion of program code and the result of executing the corresponding first line of code from the second portion of program code;
program instructions to synchronously compare a result of executing the second line of code from the first portion of program code to a result of executing a corresponding second line of code from the second portion of program code;
and
program instructions to stop the first set of debugging operations and the second set of debugging operations in response to a determination that at least one of a first stop condition and a second stop condition exists based, at least in part, on the comparison of the result of executing the second line of code from the first portion of code to the result of executing the corresponding second line of code from the second portion of program code.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/881,461Filed 13 Oct 2015
Published: US 2017/0103010 A113 Apr 2017
Granted: 26 Dec 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G06F 11/362
Prevention of errors by analysis, debugging or testing of software: debugging of software
G06F 11/1494
Using run-time replication performed by the application software, e.g. N-modular type: n-modular type
G06F 11/3698
Prevention of errors by analysis, debugging or testing of software: environments for analysis, debugging or testing of software
G06F
Computing and data processing