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Re: PR optimization/9630: [3.2/3.3/3.4 regression] crash with-freg-struct-return in C++ code
- From: Andreas Schwab <schwab at suse dot de>
- To: Steven Bosscher <s dot bosscher at student dot tudelft dot nl>
- Cc: gcc-gnats at gcc dot gnu dot org, gcc-bugs at gcc dot gnu dot org, nobody at gcc dot gnu dot org,stefan at space dot twc dot de, mark at codesourcery dot com
- Date: Wed, 12 Mar 2003 19:05:23 +0100
- Subject: Re: PR optimization/9630: [3.2/3.3/3.4 regression] crash with-freg-struct-return in C++ code
- References: <3E6F72F7.4080907@student.tudelft.nl>
Steven Bosscher <s dot bosscher at student dot tudelft dot nl> writes:
|> http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9630
|>
|> This PR is about wrong code when *not* optimizing.
|>
|> The expected output of the test case is 2. With
|> GCC 3.3 (todays CVS), you get:
|>
|> # gcc -lstdc++ -freg-struct-return 9630.cc
|> # a.out
|> Segmentation fault
|> # gcc -lstdc++ -freg-struct-return 9630.cc -O
|> # a.out
|> 2
|> #
|>
|> Could it be that this bug happens because libstdc++ was *not*
|> compiled with --freg-struct-return?
-freg-struct-return will change the ABI, so you definitely have an ABI
mismatch here.
Andreas.
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Andreas Schwab, SuSE Labs, schwab at suse dot de
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