Debug printf source code with gdb on centos

By default, the library function does not contain debugging information when debugging printf source code centos with gdb on centos. Therefore, gdb cannot be used to access the printf () function. Www.2cto.com solution: 1. install debugging information for libc. first install a command: sudoyuminstall... by default, the library function does not contain debugging information when debugging printf source code centos with gdb on centos. Therefore, gdb cannot be used to access the printf () function. Www.2cto.com solution: 1. install debugging information for libc. first install a command: sudo yum install/usr/bin/debuginfo-install B. set repos: vi/etc/yum. repos. d/CentOS-Debuginfo.repo, set enabled to 1 www.2cto.com c. install and debug the standard library: sudo debuginfo-install glibc 2. run gdb again and enter the printf () function. the first line of code I see here is _ IO_size_t len = strlen (str );