[Bug middle-end/55219] [4.7 regression] attempting to compile a pre-processed unit eats up memory until OOM kills the cc1 process

2012-11-06 Thread markus at trippelsdorf dot de 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55219



Markus Trippelsdorf markus at trippelsdorf dot de changed:



   What|Removed |Added



 CC||markus at trippelsdorf dot

   ||de



--- Comment #2 from Markus Trippelsdorf markus at trippelsdorf dot de 
2012-11-06 15:31:43 UTC ---

Here is a reduced testcase that still uses over 2GB of RAM in all

supported gcc versions:



markus@x4 tmp % cat test.i

typedef enum

{ b }

zn_type;

int x, a1_1_2, a1_1_8, a1_1_4, a1_1_3, a1_0, a1_0_0, a1_1_5;

double a2_0_1;

const int a2_1_4;

const zn_type a2_0;

void

fn1 ()

{

a1_0_0 =

(a1_0 ? a1_1_2 : a1_0 ? a1_1_3 : a1_0 ? a1_1_4 : a1_0 ? a1_1_5 :

 a1_0 ? a1_1_3 : a1_0 ? a1_1_4 : a1_0 ? a1_1_8 : x) +

(a2_0 ? : a2_0 ? : a2_0 ? : a2_0 ? : a2_0 ? : a2_0 ? : a2_0 ? : a2_0 ?

:

 a2_0 ? : a2_0 ? : a2_0 ? a2_0_1 : a2_0 ? : 0 ? : a2_0 ? : a2_0 ? :

 a2_0 ?  : a2_0 ? : a2_0 ? : a2_0 ? a2_1_4 : a2_0 ? : x);

}



markus@x4 tmp % ulimit -v 200

markus@x4 tmp % gcc -c test.i

virtual memory exhausted: Cannot allocate memory

[Bug middle-end/55219] [4.7 regression] attempting to compile a pre-processed unit eats up memory until OOM kills the cc1 process

2012-11-06 Thread steven at gcc dot gnu.org 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55219



Steven Bosscher steven at gcc dot gnu.org changed:



   What|Removed |Added



 Status|UNCONFIRMED |NEW

   Last reconfirmed||2012-11-06

 Ever Confirmed|0   |1



--- Comment #3 from Steven Bosscher steven at gcc dot gnu.org 2012-11-06 
21:25:30 UTC ---

Problem is in fold-const.c.

[Bug middle-end/55219] [4.7 regression] attempting to compile a pre-processed unit eats up memory until OOM kills the cc1 process

2012-11-05 Thread matt at use dot net 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55219



--- Comment #1 from Matt Hargett matt at use dot net 2012-11-06 01:31:22 UTC 
---

Perhaps worth noting that gcc/trunk and google/4_7 also still exhibit the

problem.

[Bug middle-end/55219] [4.7 regression] attempting to compile a pre-processed unit eats up memory until OOM kills the cc1 process

2012-11-05 Thread pinskia at gcc dot gnu.org 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55219



Andrew Pinski pinskia at gcc dot gnu.org changed:



   What|Removed |Added



   Target Milestone|--- |4.7.4

   Severity|critical|normal