Bug 50855

Summary: Bogus warning on weak symbol from g++
Product: [Retired] Red Hat Linux Reporter: hjl
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED RAWHIDE QA Contact: David Lawrence <dkl>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.3   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2001-08-17 16:49:26 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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A patch none

Description hjl 2001-08-03 22:38:51 UTC 
# cat x.c
extern void foo (void) __attribute__ ((weak));

int
main ()
{
  if (&foo)
    foo ();

  return 0;
}
# g++ -S -O -Wall x.c
x.c: In function `int main ()':
x.c:6: warning: the address of `foo ()', will always be `true'

gcc is ok. gcc 3.0 has the same bug.
Comment 1 hjl 2001-08-03 23:22:51 UTC 
Created attachment 26172 [details]
A patch
Comment 2 Jakub Jelinek 2001-08-07 09:41:09 UTC 
This will be included in gcc3-3.0-6 and gcc-2.96-96.
Thanks.
Comment 3 Jay Turner 2002-04-02 17:13:31 UTC 
Fix confirmed with gcc-2.96-107.