[Bug gdb/30934] Stopping at a breakpoint takes minutes if a source file has long lines

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=30934

--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Hi-Angel from comment #0)
> No idea why it's taking so long, given I do not execute any commands that
> would trigger showing these long lines,

This is because source_cache::ensure annotates a file at at time rather than a
line at at time.

> but debugging such a file with gdb
> is nigh impossible. 

With "set style sources off" I get:
...
$ time gdb -q a.out -ex "b 56" -ex "set style sources off" -ex run -ex "set
confirm off" -ex quit
Reading symbols from a.out...
Breakpoint 1 at 0x400ff5: file test.cpp, line 56.
Starting program: /data/vries/gdb/a.out 

Breakpoint 1, Solution::numOfSubarrays (this=0x7ffffff9c15f, arr=...) at
test.cpp:56
56              return (int) t;

real    0m0.135s
user    0m0.254s
sys     0m0.028s
...

So you can use as workaround:
- "set style sources off", or
- build with --disable-source-highlight and still use source styling with 
  the Python Pygments package, for me that takes about 1 sec.

-- 
You are receiving this mail because:
You are on the CC list for the bug.