Ubuntu
gcc-4.3 package

[4.3 Regression] Wrong code when -O3 or -O2 -fstack-protector used

Bug #316019 reported by Matthias Klose on 2009-01-11

	Status	Importance	Assigned to
gcc	Fix Released	Medium	gcc-bugzilla #38902
gcc-4.3 (Ubuntu)	Fix Released	High	Unassigned
Intrepid	Fix Released	High	Unassigned
Jaunty	Fix Released	High	Unassigned

Bug Description

Binary package hint: gcc-4.3

PR middle-end/38616

Tags:

Related branches

lp://staging/ubuntu/lucid/gcc-4.3

lp://staging/ubuntu/intrepid-updates/gcc-4.3

Bug Watch Updater (bug-watch-updater) on 2009-01-11

Changed in gcc:
status:	Unknown → Confirmed

Matthias Klose (doko) on 2009-01-11

Changed in gcc-4.3:
importance:	Undecided → Medium
status:	New → In Progress
status:	New → In Progress

Revision history for this message

Kees Cook (kees) wrote on 2009-01-11:

On 64bit, the truncation happens at byte 24 (32bit happens at 8). Does not happen on Gutsy or Hardy (or Dapper, which didn't use -fstack-protector).

I have no idea how to even search for stack variables that are assigned an initial string value. That's rather semantically sensitive to search for.

Revision history for this message

Kees Cook (kees) wrote on 2009-01-11:

truncate.c Edit (3.1 KiB, text/plain)

More test cases...

Revision history for this message

Launchpad Janitor (janitor) wrote on 2009-01-11:

This bug was fixed in the package gcc-4.3 - 4.3.2-2ubuntu11

---------------
gcc-4.3 (4.3.2-2ubuntu11) jaunty; urgency=low

  * Fix PR middle-end/38616 (wrong code with -fstack-protector). LP: #316019.
  * Update to SVN 20090111 from the gcc-4_3-branch.
    - Fix PR target/34571, PR debug/7055, PR tree-optimization/37194,
      PR tree-optimization/38529, PR fortran/38763, PR fortran/38765.

-- Matthias Klose <email address hidden> Mon, 12 Jan 2009 00:25:32 +0100

Changed in gcc-4.3:
status:	In Progress → Fix Released

Bug Watch Updater (bug-watch-updater) on 2009-01-15

Changed in gcc:
status:	Confirmed → Fix Released

Revision history for this message

Matthias Klose (doko) wrote on 2009-01-18:

not yet fixed.

Changed in gcc-4.3:
importance:	Undecided → High
status:	In Progress → Triaged
importance:	Medium → High
status:	Fix Released → Triaged

Revision history for this message

Kees Cook (kees) wrote on 2009-01-18:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38616
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38902

Changed in gcc:
status:	Fix Released → Unknown

Bug Watch Updater (bug-watch-updater) on 2009-01-18

Changed in gcc:
status:	Unknown → New

Revision history for this message

Launchpad Janitor (janitor) wrote on 2009-01-19:

This bug was fixed in the package gcc-4.3 - 4.3.2-2ubuntu14

---------------
gcc-4.3 (4.3.2-2ubuntu14) jaunty; urgency=low

  * Update to SVN 20090119 from the gcc-4_3-branch.
    - Fix PR tree-optimization/36765.
  * Remove patch for PR 34571, applied upstream.
  * Apply proposed patch for PR middle-end/38902. LP: #316019.

-- Matthias Klose <email address hidden> Tue, 20 Jan 2009 00:06:35 +0100

Changed in gcc-4.3:
status:	Triaged → Fix Released

Bug Watch Updater (bug-watch-updater) on 2009-01-22

Changed in gcc:
status:	New → Confirmed

Revision history for this message

Martin Pitt (pitti) wrote on 2009-01-23:

Accepted into intrepid-proposed, please test and give feedback here. Please see https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

Changed in gcc-4.3:
status:	Triaged → Fix Committed

Revision history for this message

Kees Cook (kees) wrote on 2009-01-24:

Confirmed to be fixed in Jaunty, confirmed to be fixed in Intrepid -proposed.

Bug Watch Updater (bug-watch-updater) on 2009-01-25

Changed in gcc:
status:	Confirmed → Fix Released

Revision history for this message

Launchpad Janitor (janitor) wrote on 2009-01-29:

This bug was fixed in the package gcc-4.3 - 4.3.2-1ubuntu12

---------------
gcc-4.3 (4.3.2-1ubuntu12) intrepid-proposed; urgency=low

* Fix PR middle-end/38616, PR target/38902 (wrong code with
-fstack-protector). LP: #316019.

  * Fix PR target/38287 (sparc, wrong code). Closes: #506713.
  * Apply selected fixes from the gcc-4_3-branch:
    - Fix PR tree-optimization/37102 (wrong code).
    - Fix PR tree-optimization/37868 (wrong code).
    - Fix PR c++/38030 (wrong code).
    - Fix PR rtl-optimization/37489 (wrong code).
    - Fix PR middle-end/37882 (wrong code).
    - Fix PR tree-optimization/36765 (wrong code).

-- Matthias Klose <email address hidden> Tue, 20 Jan 2009 01:14:32 +0100