Bug 80738 - Internal compiler error in expand_assignment, at expr.c:3450
Internal compiler error in expand_assignment, at expr.c:3450
Status: CLOSED UPSTREAM
Product: Red Hat Linux
Classification: Retired
Component: gcc (Show other bugs)
7.2
i386 Linux
medium Severity medium
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Assigned To: Jakub Jelinek
Brian Brock
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Depends On:
Blocks:
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Reported: 2002-12-30 12:47 EST by Alexander Viro
Modified: 2007-04-18 12:49 EDT (History)
1 user (show)

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Doc Type: Bug Fix
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Last Closed: 2004-10-05 19:42:19 EDT
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RHEL 7.3 requirements from Atomic Host:


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Description Alexander Viro 2002-12-30 12:47:20 EST
Description of problem: on the testcase below gcc gives the above

#!/bin/sh
cat >a.c <<'EOF'
struct foo {char x, y, z[2];};
struct foo f();
void bar(int baz)
{
        f().z[baz] = 1;
}
EOF
gcc -S -ansi -freg-struct-return -Wall a.c

run the above and watch
a.c: In function `bar':
a.c:5: Internal compiler error in expand_assignment, at expr.c:3450
Please submit a full bug report.
See <URL:http://bugzilla.redhat.com/bugzilla/> for instructions.
gcc -v output: gcc version 2.96 20000731 (Red Hat Linux 7.2 2.96-112.7.2)
Comment 1 Richard Henderson 2004-10-03 07:21:14 EDT
Indeed, the problem persists through to current mainline.
It appears that -freg-struct-return Just Doesn't Work.
Comment 2 Vladimir Makarov 2004-10-04 17:53:11 EDT
gcc 2.96 is too old now.  Its release cycle was finished long ago. 
Therefore I am closing the case.  If it is still important, we could
reopen it.

Comment 3 Richard Henderson 2004-10-04 18:25:45 EDT
Um, Vlad, my comment from just yesterday indicates that the problem
is still present in gcc 4.0.

Whether or not the proper resolution of this bug is to remove the
code for -freg-struct-return, since I suspect that it hasn't worked
in a very long time, is another issue.
Comment 4 Richard Henderson 2004-10-05 19:42:19 EDT
Pushed upstream to
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17855

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