git/list[1] front-page[2] threads[3] people[4] search[5] about
 

Re: general protection faults with "git grep" version 1.7.7.1

From
Thomas Rast <trast@student.ethz.ch>
Date
Oct 25, 2011, 16:07 UTC
Message-ID
<201110251807.53893.trast@student.ethz.ch>
In-Reply-To
<201110251800.28054.trast@student.ethz.ch>
Thomas Rast wrote:
Show 12 quoted lines
> Jim Meyering wrote:
> > Thomas Rast wrote:
> > > [GCC moves access to a file-static variable across pthread_mutex_lock()]
> > 
> > Thanks for the investigation.
> > Actually, isn't gcc -O2's code-motion justified?
> > While we *know* that those globals may be modified asynchronously,
> > builtin/grep.c forgot to tell gcc about that.
> 
> I'm somewhat unwilling to believe that:
> 
> * "volatile" enforces three unrelated things, see e.g. [1].
Argh, forgot my reference:
[1] http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2016.html
    section "Existing portable uses"
-- 
Thomas Rast
trast@{inf,student}.ethz.ch
Previous: Thomas RastNext: Jim Meyering
Message 11 of 15 in “general protection faults with "git grep" version 1.7.7.1”
  1. Markus TrippelsdorfOct 24, 2011
  2. Richard W.M. JonesOct 24, 2011
  3. Markus TrippelsdorfOct 24, 2011
  4. Bernt HansenOct 25, 2011
  5. Jeff KingOct 25, 2011
  6. Bernt HansenOct 25, 2011
  7. Thomas RastOct 25, 2011
  8. Jim MeyeringOct 25, 2011
  9. Markus TrippelsdorfOct 25, 2011
  10. Thomas RastOct 25, 2011
  11. Thomas RastOct 25, 2011
  12. Jim MeyeringOct 25, 2011
  13. Thomas RastOct 25, 2011
  14. Jim MeyeringOct 25, 2011
  15. Jeff KingOct 25, 2011

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.