c/2891: extern inline - undefined references

c/2891: extern inline - undefined references

[rohloff]

>Number:         2891
>Category:       c
>Synopsis:       extern inline - undefined references
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon May 21 11:56:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Ingo Rohloff
>Release:        unknown-1.0
>Organization:
>Environment:
gcc-2.95.2
>Description:
Define a function "extern inline" compiling without
"-O1", "-O2" or with "-fno-inline" will result in
undefined references.
(This bug is triggered, if you compile a C file
 which uses <string.h> and strcpy and use
 "-O -fno-inline" as compiler flags)
>How-To-Repeat:
Compile with 
"gcc -o t t.c" or 
"gcc -O -fno-inline -o t t.c"
-------------t.c-------------------------------------
extern inline void t(int a)
{
  int b=a;
}
int main()
{
  t(3);
}
------------------------------------------------------
>Fix:
Compile with "gcc -O -o t t.c".
>Release-Note:
>Audit-Trail:
>Unformatted:

Re: c/2891: extern inline - undefined references

[Andreas Jaeger]

The following reply was made to PR c/2891; it has been noted by GNATS.

From: Andreas Jaeger <aj@suse.de>
To: rohloff@in.tum.de
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c/2891: extern inline - undefined references
Date: 21 May 2001 21:17:53 +0200

 rohloff@in.tum.de writes:
 
 [...]
 > Define a function "extern inline" compiling without
 > "-O1", "-O2" or with "-fno-inline" will result in
 > undefined references.
 
 Yes, that's to be expected.  Please read the manual, it explains why.
 
 This is not a bug, it's a desired feature.
 
 Andreas
 -- 
  Andreas Jaeger
   SuSE Labs aj@suse.de
    private aj@arthur.inka.de
     http://www.suse.de/~aj