I did a bit of debugging with latest vim-7.1 (patches 1-166).
I found that vim loops forever in a while(...)
loop in syntax.c in function syntax_start():
syntax.c:
562 while (current_lnum < lnum)
563 {
...
...
596 load_current_state(prev);
...
...
609 line_breakcheck();
610 if (got_int)
611 {
612 current_lnum = lnum;
613 break;
614 }
615 }
This while loop never ends with attached "vim_testcase" file.
Adding some printf(), I can see that:
- Before entering above while loop:
- current_lnum == 65
- lnum == 80
- Then when iterating in the while loop:
- lnum remains unchanged (80)
- current_lnum becomes:
65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78,
65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78,
65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78,
etc.
current_lnum never reaches lnum (80) so loop never ends.
current_lnum goes from 78 to 65 when calling load_current_state(prev)
at line 596.
I do not understand the idea behind load_current_state() and
store_current_state() to go beyond and come up with fix for this.
I posted this to the vim_dev mailing list:
http://groups.google.com/group/vim_dev/browse_thread/thread/157f265102c48127/5550df9950274543?lnk=st&q=#5550df9950274543
--
Vim locks up while editing a specific file (file attached)
https://bugs.launchpad.net/bugs/68960
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