[Bug c++/13216] New: compiler comsuming too much memory and time when there are too many inline functions

[Bug c++/13216] New: compiler comsuming too much memory and time when there are too many inline functions

[xecutor at sendmail dot ru]

Try to compile code generated by this perl script:
#!/usr/bin/perl
print '#include <stdio.h>'."\n";
print '#include <string>'."\n";
print 'using namespace std;'."\n";
print "template <class T> inline T func$_(const T& a,const T& b){return a+b;}
\n"for(1..100);
print "string foo(const string& x,const string& y){return\n";
print "func$_(x,func$_(x,y))+\n"for(1..100);
print "x+y;}\n";
print 'int main(int argc,char* argv[]){printf("%s\n",foo(argv[1],argv[2]).c_str
());return 0;}'."\n";


with this options:
g++ -O3 -finline-limit=16384

after 30 minutes of compilation on P4-2000 with 1Gb of memory and 2Gb of swap,
it takes 1Gb of memory and still running.
On real big project with a lot of inline template functions after 40 minutes of 
compilation it consumed all the avialable memory and finally crashed.

-- 
           Summary: compiler comsuming too much memory and time when there
                    are too many inline functions
           Product: gcc
           Version: 3.2.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: xecutor at sendmail dot ru
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: SunOS smsc 5.9 Generic_112234-06 i86pc i386 i86pc


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13216

[Bug c++/13216] compiler comsuming too much memory and time when there are too many inline functions

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2003-11-28 17:20 -------
I can confirm this on 3.3 but on the mainline, it only uses 50M (this is on powerpc-apple-darwin).
This is fixed by unit-at-a-time.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
           Keywords|                            |memory-hog
         Resolution|                            |FIXED
   Target Milestone|---                         |3.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13216