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Trace State Variables (Debugging with GDB) - sourceware.org
https://sourceware.org/gdb/onlinedocs/gdb/Trace-State-Variables.html
c - Trace and log values of a variable with GDB - Stack …
https://stackoverflow.com/questions/18674616/trace-and-log-values-of-a-variable-with-gdb
Trace and log values of a variable with GDB. Bookmark this question. Show activity on this post. I am not an experienced programmer but I recently have to check C code translated from Matlab, in order to ensure that with the same data set, C and Matlab are giving the identical results. Watches are what I am able to use until now but that ...
Variables (Debugging with GDB) - sourceware.org
https://sourceware.org/gdb/current/onlinedocs/gdb/Variables.html
If you wish, you can specify a static variable in a particular function or file by using the colon-colon ( ::) notation: file :: variable function :: variable. Here file or function is the name of the context for the static variable. In the case of file names, you can use quotes to make sure GDB parses the file name as a single word—for ...
Dynamic Tracing with GDB - Heinrich Hartmann
https://www.heinrichhartmann.com/blog/dynamic-tracing-with-gdb.html
In order to use gdb commands for dynamic tracing you can use the following syntax break location [if condition] commands [silent] ... command list ... continue end The silent statment tells gdb to ommit the usual status print-outs when a breakpoint is hit (“Breakpoint 1 …”).
Tracepoints (Debugging with GDB) - sourceware.org
https://sourceware.org/gdb/onlinedocs/gdb/Tracepoints.html
Using GDB ’s trace and collect commands, you can specify locations in the program, called tracepoints, and arbitrary expressions to evaluate when those tracepoints are reached. Later, using the tfind command, you can examine the values those expressions had when the program hit the tracepoints.
Debugging with GDB - Examining Data
https://web.mit.edu/gnu/doc/html/gdb_10.html
print and many other GDB commands accept an expression and compute its value. Any kind of constant, variable or operator defined by the programming language you are using is valid in an expression in GDB. This includes conditional expressions, function calls, …
Debugging with GDB – BetterExplained
https://betterexplained.com/articles/debugging-with-gdb/
Typically, you will view/set variables when the program is paused. print x Print current value of variable x. Being able to use the original variable names is why the (-g) flag is needed; programs compiled regularly have this information removed. set x = 3 set x = y Set x to a set value (3) or to another variable (y) call myfunction ()
Starting and Stopping Trace Experiments (Debugging with GDB)
https://sourceware.org/gdb/onlinedocs/gdb/Starting-and-Stopping-Trace-Experiments.html
This command displays the status of the current trace data collection. Here is an example of the commands we described so far: (gdb) trace gdb_c_test (gdb) actions Enter actions for tracepoint #1, one per line. > collect $regs,$locals,$args > while-stepping 11 > collect $regs > end > end (gdb) tstart [time passes …] (gdb) tstop
Debugging with GDB - Examining the Stack
https://web.mit.edu/gnu/doc/html/gdb_8.html
Print the local variables of the selected frame, each on a separate line. These are all variables (declared either static or automatic) accessible at the point of execution of the selected frame. info catch Print a list of all the exception handlers that are active in the current stack frame at the current point of execution.
Backtrace (Debugging with GDB) - sourceware.org
https://sourceware.org/gdb/onlinedocs/gdb/Backtrace.html
You can stop the backtrace at any time by typing the system interrupt character, normally Ctrl-c . backtrace [option]… [qualifier]… [count] bt [option]… [qualifier]… [count] Print the backtrace of the entire stack. The optional count can be one of the following: n n Print only the innermost n frames, where n is a positive number. -n -n
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