Sun Studio 12: Debugging a Program With dbx

at [filename:]line_number

The designated line is about to be executed. If you specify filename, then the designated line in the specified file is about to be executed. The file name can be the name of a source file or an object file. Although quotation marks are not required, they may be necessary if the file name contains special characters. If the designated line is in template code, a breakpoint is placed on all instances of that template.