Difference between
modified post 881c3 by Anonymous on Wed 1st Sep 2021 14:15
original post e01c0dc3 by Anonymous on Wed 1st Sep 2021 13:56
Download diff
Show old version | new version | both versions

/*

1	1		/*
2		-	* gdb_catch_c++_throw1.cpp demo
	2	+	* gdb_catch_c++_throw2.cpp demo
3	3		*
4	4		* Use like this:
5	5		* $ g++ -std=c++11 -g gdb_catch_c++_throw1.cpp
6		-	* $ printf 'catch throw\nrun\nwhere\n' \| gdb --args ./a.out 2>&1 \| awk '/exception thrown/,EOF { print $0 }'
	6	+	*
7		-	* Catchpoint 1 (exception thrown), 0x00007ffff7e80c2e in __cxa_throw ()
	7	+	* Inferior 1 [process 21238] will be killed.
8		-	* from /lib/x86_64-linux-gnu/libstdc++.so.6
	8	+	*/
9		-	* (gdb) #0 0x00007ffff7e80c2e in __cxa_throw ()
	9	+	#include <stdexcept>
10		-	* from /lib/x86_64-linux-gnu/libstdc++.so.6
	10	+	#include <iostream>
11		-	* #1 0x00005555555552c9 in myclass::print_and_throw (this=0x7fffffffdefc)
	11	+	#include <stdlib.h>
12		-	* at test1.cpp:19
	12	+	#include <stdio.h>
13		-	* #2 0x0000555555555262 in myclass::countdown_to_death (this=0x7fffffffdefc)
	13	+	#include <unistd.h>
14		-	* at test1.cpp:14
	14	+	#include <execinfo.h>
15		-	* #3 0x0000555555555256 in myclass::countdown_to_death (this=0x7fffffffdefc)
	15	+
16		-	* at test1.cpp:13
	16	+	class myclass
17		-	* #4 0x0000555555555256 in myclass::countdown_to_death (this=0x7fffffffdefc)
	17	+	{
18		-	* at test1.cpp:13
	18	+	public:
19		-	* #5 0x0000555555555256 in myclass::countdown_to_death (this=0x7fffffffdefc)
	19	+	int death_is_coming = 10;
20		-	* at test1.cpp:13
	20	+
21		-	* #6 0x0000555555555256 in myclass::countdown_to_death (this=0x7fffffffdefc)
	21	+	/* recursive call to make stack trace bigger */
22		-	* at test1.cpp:13
	22	+	void countdown_to_death()
23		-	* #7 0x0000555555555256 in myclass::countdown_to_death (this=0x7fffffffdefc)
	23	+	{
24		-	* at test1.cpp:13
	24	+	if (this->death_is_coming-- > 0)
25		-	* #8 0x0000555555555256 in myclass::countdown_to_death (this=0x7fffffffdefc)
	25	+	this->countdown_to_death();
26		-	* at test1.cpp:13
	26	+	this->print_and_throw();
27		-	* #9 0x0000555555555256 in myclass::countdown_to_death (this=0x7fffffffdefc)
	27	+	}
28		-	* at test1.cpp:13
	28	+	void print_and_throw()
29		-	* #10 0x0000555555555256 in myclass::countdown_to_death (this=0x7fffffffdefc)
	29	+	{
30		-	* at test1.cpp:13
	30	+	std::cout << "#mark 1" << std::endl;
31		-	* #11 0x0000555555555256 in myclass::countdown_to_death (this=0x7fffffffdefc)
	31	+	throw std::exception(); /* gdb should catch this */
32		-	* at test1.cpp:13
	32	+	}
33		-	* #12 0x0000555555555256 in myclass::countdown_to_death (this=0x7fffffffdefc)
	33	+	};
34		-	* at test1.cpp:13
	34	+
35		-	* #13 0x00005555555551a7 in main (ac=1, av=0x7fffffffdff8) at test1.cpp:26
	35	+	/*
36		-	* (gdb) quit
	36	+	* std::exception will call std::terminate() to terminate the process.
37		-	* A debugging session is active.
	37	+	* NO C++ CODE is allowed at this point, use plain ISO C and ISO C
38		-	*
	38	+	* I/O only!!
40	39		*/
41		-	#include <stdexcept>
	40	+	void std::terminate()
47	41		{
48		-	public:
	42	+	#define MAX_SIZE (1024)
49		-	int death_is_coming = 10;
	43	+	size_t size;
	44	+	void *array[MAX_SIZE];
50	49
51		-	/* recursive call to make stack trace bigger */
	50	+	int main(int ac, char **av)
53	51		{
54		-	if (this->death_is_coming-- > 0)
	52	+	myclass x;
55		-	this->countdown_to_death();
	53	+	x.countdown_to_death();
56		-	this->print_and_throw();
	54	+
	55	+	return EXIT_SUCCESS;
57	56		}
58		-	void print_and_throw()
	57	+
59		-	{
	58	+
60		-	std::cout << "#mark 1" << std::endl;
	59	+
61		-	throw std::exception(); /* gdb should catch this */
	60	+
62		-	}
	61	+
63		-	};
	62	+
64	63
65		-	int main(int ac, char **av)
	64	+
66		-	{
	65	+
67		-	myclass x;
	66	+
68		-	x.countdown_to_death();
	67	+
69	68
70		-	return EXIT_SUCCESS;
	69	+
71		-	}
	70	+
72	71