[Bug c/34732] New: Optimization flag trigger unexpected crash

[Bug c/34732] New: Optimization flag trigger unexpected crash

[ijeukens at yahoo dot com dot br]

This is the core of the problem (at comp_0.c):

...
for(j = 0;j < 3;j++) {
   comp_0_fptr[j][1]();
}
...

     comp_0_fptr holds pointers to void functions. When compiling with -g,
everything works ok. Compiling with -O2, or any other, the effect that I get
is:

   comp_0_fptr[0][1]();
   comp_0_fptr[1][1]();
   comp_0_fptr[1][1]();  

   and not comp_0_fptr[2][1](); at the last statement.


-- 
           Summary: Optimization flag trigger unexpected crash
           Product: gcc
           Version: 4.1.3
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ijeukens at yahoo dot com dot br
 GCC build triplet: x86_64-linux-gnu
  GCC host triplet: x86_64-linux-gnu
GCC target triplet: x86_64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34732

[Bug c/34732] Optimization flag trigger unexpected crash

[ijeukens at yahoo dot com dot br]

------- Comment #1 from ijeukens at yahoo dot com dot br  2008-01-10 19:24 -------
Created an attachment (id=14910)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14910&action=view)
execution output


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34732

[Bug middle-end/34732] Optimization flag trigger unexpected crash

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|blocker                     |normal
          Component|c                           |middle-end


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34732

[Bug middle-end/34732] Optimization flag trigger unexpected crash

[ijeukens at yahoo dot com dot br]

------- Comment #2 from ijeukens at yahoo dot com dot br  2008-01-10 19:26 -------
Created an attachment (id=14911)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14911&action=view)
source 1


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34732

[Bug middle-end/34732] Optimization flag trigger unexpected crash

[ijeukens at yahoo dot com dot br]

------- Comment #3 from ijeukens at yahoo dot com dot br  2008-01-10 19:27 -------
Created an attachment (id=14912)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14912&action=view)
source 2


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34732

[Bug middle-end/34732] Optimization flag trigger unexpected crash

[ijeukens at yahoo dot com dot br]

------- Comment #4 from ijeukens at yahoo dot com dot br  2008-01-10 19:27 -------
Created an attachment (id=14913)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14913&action=view)
source 3


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34732

[Bug middle-end/34732] Optimization flag trigger unexpected crash

[ijeukens at yahoo dot com dot br]

------- Comment #5 from ijeukens at yahoo dot com dot br  2008-01-10 19:28 -------
Created an attachment (id=14914)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14914&action=view)
source 4 .. and last one


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34732

[Bug middle-end/34732] Optimization flag trigger unexpected crash

[ijeukens at yahoo dot com dot br]

------- Comment #6 from ijeukens at yahoo dot com dot br  2008-01-11 11:43 -------
Not a bug (wrong variable type (int instead of size_t) triggered strange
behavior.


-- 

ijeukens at yahoo dot com dot br changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34732