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* Re: other/10757: Adding -fpic/-fPIC causes crash with PCH created without -fpic/-fPIC
@ 2003-05-16  7:36 Geoffrey Keating
  0 siblings, 0 replies; 2+ messages in thread
From: Geoffrey Keating @ 2003-05-16  7:36 UTC (permalink / raw)
  To: nobody; +Cc: gcc-prs

The following reply was made to PR other/10757; it has been noted by GNATS.

From: Geoffrey Keating <geoffk@apple.com>
To: gcc-prs@gcc.gnu.org, ghazi@caip.rutgers.edu, gcc-bugs@gcc.gnu.org,
   ljrittle@acm.org, gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: other/10757: Adding -fpic/-fPIC causes crash with PCH created without -fpic/-fPIC
Date: Thu, 15 May 2003 21:22:06 -0700

 I have a report of a similar bug on Darwin.  It's a PCH validation bug; 
 it can't work if you build the PCH without -fpic but try to use it with 
 -fpic, but the validation code doesn't check for this (which is tricky, 
 because the reason it doesn't work is target-dependent, so we need to 
 add some way for the target to save and validate some flags).
 


^ permalink raw reply	[flat|nested] 2+ messages in thread

* other/10757: Adding -fpic/-fPIC causes crash with PCH created without -fpic/-fPIC
@ 2003-05-12 19:15 ljrittle
  0 siblings, 0 replies; 2+ messages in thread
From: ljrittle @ 2003-05-12 19:15 UTC (permalink / raw)
  To: gcc-gnats


>Number:         10757
>Category:       other
>Synopsis:       Adding -fpic/-fPIC causes crash with PCH created without -fpic/-fPIC
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon May 12 19:06:03 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     ljrittle@acm.org
>Release:        mainline  5/12
>Organization:
>Environment:
sol2.9 & ppclinux & i386-unknown-freebsd4.8
>Description:
People on the libstdc++ mailing list found a problem with PCH and the -fpic flag that I traced to this root (multi-file) test case.
>How-To-Repeat:
; echo >t.h
; echo >main.c 'int main() {}'
; g++ -o t.h.gch t.h
; g++ -include t.h -Winvalid-pch main.c
; g++ -include t.h -Winvalid-pch -fpic main.c
main.c: In function `int main()':
main.c:1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
; g++ -fpic main.c

(Humm, at this point, I'd have thought that maybe something wasn't
marked for PCH/GC properly in a region keyed by -fpic, but then I
noticed:)

; g++ -fpic -o t.h.gch t.h
; g++ -include t.h -Winvalid-pch main.c
cc1plus: warning: ./t.h.gch: not used because `__pic__' not defined
; g++ -include t.h -Winvalid-pch -fpic main.c

I'm sorry, I have no time to debug this today.
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:


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2003-05-16  7:36 other/10757: Adding -fpic/-fPIC causes crash with PCH created without -fpic/-fPIC Geoffrey Keating
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2003-05-12 19:15 ljrittle

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