After referring to stackoverflow, I use GArray as an example to demonstrate how to use glib with CMake. The code can be downloaded here.
Category: Technology
Install debug package on Void Linux
To debug package, you should install package-dbg on Void Linux:
# xbps-install void-repo-debug
# xbps-install -S jemalloc-dbg
Definitely, the package-dbg doesn’t include source files, so the source files should be downloaded separately.
References:
Repositories;
Debug sources not found by gdb.
Mount ftrace control directory on Void Linux
On Void Linux, the /sys/kernel/tracing is empty, which means the ftrace control directory is not mounted automatically, so you need mount it manually:
# mount -t tracefs nodev /sys/kernel/tracing
# cd /sys/kernel/tracing
# ls
README free_buffer set_event trace_clock
available_events function_profile_enabled set_event_notrace_pid trace_marker
available_filter_functions hwlat_detector set_event_pid trace_marker_raw
......Fix “glibconfig.h: No such file or directory” error
I installed glib-devel on Void Linux, and wrote a simple program for test. But the compilation reported following error:
# gcc -I/usr/include/glib-2.0 main.c -lglib-2.0
......
/usr/include/glib-2.0/glib/gtypes.h:32:10: fatal error: glibconfig.h: No such file or directory
32 | #include <glibconfig.h>
| ^~~~~~~~~~~~~~
compilation terminated.
glibconfig.h is in /usr/lib/glib-2.0/include directory, so it should be added into header file search path:
# gcc -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include main.c -lglib-2.0
#Fix “Address 0xxxxxxxxx out of bounds” issue
Yesterday, I came across a crash issue when program accessed “out of bound” memory:
......
func = 0x7ffff7eb1dc8 <Address 0x7ffff7eb1dc8 out of bounds>
......
After some debugging, I found the reason is program uses dlopen to load some dynamic library, records the memory address of the library, but still read the memory after dlclose it.