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ref: 921666f7046ed38ff42fe233d8cd0a5f83578418
parent: c4b93eb7944dd5e97a716c557c9d18c587b8f743
author: Fabian Greffrath <[email protected]>
date: Sun Jan 20 15:48:30 EST 2019

glob: let I_NextGlob() return NULL if (glob == NULL)

If a non-existent directory is passed over to I_StartGlob(), e.g. when
moving config files between computers, it will return NULL. If this
return value is then fed into I_NextGlob(), it will trigger a
segmentation fault. Add a check to the latter if (glob == NULL) and
let it return NULL itself in this case.

--- a/src/i_glob.c

+++ b/src/i_glob.c

@@ -319,6 +319,11 @@

 {

     const char *result;

+    if (glob == NULL)

+    {

+        return NULL;

+    }

+

     // In unsorted mode we just return the filenames as we read

     // them back from the system API.

     if ((glob->flags & GLOB_FLAG_SORTED) == 0)