[Geany-Devel] CodeAi Fixes a Null Pointer Dereference

Benjamin Bales benjamin.bales at xxxxx
Wed May 10 22:10:52 UTC 2017

CodeAi (https://github.com/C0deAi), an automated repair tool developed at
QbitLogic (www.qbitlogic.com), suggested the following fix. Could I submit
it as a patch if it looks alright?

plugins/saveactions.c: “doc->file_type” pointer might be dereferenced when
null on line 283.  Initialization may be provided by “doc” passed in as a
function argument, but a null check would be prudent just in case. The fix
checks “doc->file_type” for null before allowing a dereference on the
following line.  A snapshot of the bug report generated by CodeAi is
attached.  A full report is available upon request.

diff --git a/plugins/saveactions.c b/plugins/saveactions.c

@@ -280,8 +280,10 @@ static void instantsave_document_new_cb(GObject *obj,
GeanyDocument *doc, gpoint

  doc->file_name = new_filename;

- if (doc->file_type->id == GEANY_FILETYPES_NONE)

+ if(doc->file_type) {

+    if (doc->file_type->id == GEANY_FILETYPES_NONE)


+ }

  /* force saving the file to enable all the related actions(tab name,
filetype, etc.) */

  document_save_file(doc, TRUE);

/* force saving the file to enable all the related actions(tab name,
filetype, etc.) */

document_save_file(doc, TRUE);



Base-commit: 84253714771f48dbc7fab02f7de43f253734dee2

Please let me know if you are interested in seeing more fixes from our
tool. Thanks!

Benjamin Bales
Chief Technology Officer
[image: QbitLogic]
1050 Crown Pointe Pkwy, Ste. 840
Atlanta, GA 30338


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