Gdb get return value of function

int fun() {
	return 42;
}

int main() {
	fun();
    return 0;
}

(gdb) break 2   // set breakpoint at line 2
(gdb) r

Breakpoint 1, fun () at test.c:2
2               return 42;

(gdb) finish   // $1 is the value the function returned.

Run till exit from #0  fun () at test.c:2
main () at test.c:7
7               return 0;
Value returned is $1 = 42   // we get the return value is 42

Source: stackoverflow.com

Similar codes

2 votes176 views1 answer
Dangling Pointer
C++
1 vote187 views1 answer
Operator precedence in cpp
C++
2 votes214 views2 answers
Check if directory exists cpp
C++
-1 vote209 views1 answer
How to declare a function in c++ header file
C++
2 votes177 views1 answer
How to hide ui elements unity
C++
3 votes144 views3 answers
C vs c++ vs c#
C++
25 votes188 views5 answers
Sort vector in descending order c++
C++
4 votes186 views1 answer
Index from iterator c++
C++
0 vote199 views1 answer
The statement vector vector int matrix(100 vector int (50 100) ) declares
C++
0 vote260 views3 answers
C++ program to convert celsius to kelvin
C++