c/3573: Internal compiler error in fixup_var_refs_1, at function.c:1922

c/3573: Internal compiler error in fixup_var_refs_1, at function.c:1922

[stevenj]

>Number:         3573
>Category:       c
>Synopsis:       Internal compiler error in fixup_var_refs_1, at function.c:1922
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jul 05 11:26:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Steven G. Johnson
>Release:        gcc 3.0
>Organization:
>Environment:
Debian GNU/Linux 2.2r3 on 1GHz Dual Pentium III, gcc compiled from source with 'make bootstrap'
>Description:
When compiling the file bug.c containing simply:

void kill_gcc3(void)
{
     double x = 0.0, y;
     y = *(&x);
     if (!(&y != &x)) {
     }
}

with:
	 gcc -c -O bug.c

I get:

bug.c: In function `kill_gcc3':
bug.c:7: Internal compiler error in fixup_var_refs_1, at function.c:1922
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL: http://www.gnu.org/software/gcc/bugs.html > for instructions.

Note that it is important to use -O in order to trigger the bug.

Thanks for your attention!

Cordially,
Steven G. Johnson
>How-To-Repeat:
See description, above (compile the provided function with gcc -c -O).
>Fix:

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