> For the complete documentation index, see [llms.txt](https://docs.hex-rays.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hex-rays.com/8.4/developer-guide/idc/idc-api-reference/alphabetical-list-of-idc-functions/644.md).

# add\_sourcefile

```
Mark a range of address as belonging to a source file
   An address range may belong only to one source file.
   A source file may be represented by several address ranges.
        ea1     - linear address of start of the address range
        ea2     - linear address of end of the address range
        filename- name of source file.
   returns: 1-ok, 0-failed.

success add_sourcefile(long ea1, ulong ea2, string filename);
```


---

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