A computer-readable recording medium having stored therein a warning matching program for causing a computer to execute a process including: determining whether or not a pre-modification location where a pre-modification warning is output by a static analysis tool in a pre-modification source code and a post-modification location where a post-modification warning is output by the static analysis tool in a post-modification source code are used in same processing; and associating the pre-modification warning with the post-modification warning based on a result of determining whether or not the pre-modification location and the post-modification location are used in the same processing.