c/7068: ICE with incomplete types

[Rainer Orth <ro at TechFak dot Uni-Bielefeld dot DE>]

>Number:         7068
>Category:       c
>Synopsis:       ICE with incomplete types
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-illegal-code
>Submitter-Id:   net
>Arrival-Date:   Tue Jun 18 08:56:11 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Rainer Orth
>Release:        3.2 20020617 (experimental)
>Organization:
Faculty of Technology, Bielefeld University
>Environment:
System: OSF1 bartok V5.1 732 alpha
Machine: alpha
	
host: alpha-dec-osf5.1
build: alpha-dec-osf5.1
target: alpha-dec-osf5.1
configured with: /vol/gnu/src/gcc/gcc/configure --prefix=/vol/gcc --with-local-prefix=/vol/gcc --disable-nls alpha-dec-osf5.1
>Description:
During a bootstrap, cc1 crashed on the equivalent of the following code:

struct itimerspec {
        struct timespec it_interval;
        struct timespec it_value;
};

% ./xgcc -B./ -g -v crash.i 
Reading specs from ./specs
Configured with: /vol/gnu/src/gcc/gcc/configure --prefix=/vol/gcc --with-local-prefix=/vol/gcc --disable-nls alpha-dec-osf5.1
Thread model: single
gcc version 3.2 20020617 (experimental)
 ./cc1 -fpreprocessed crash.i -quiet -dumpbase crash.i -g -version -o /tmp//ccOO1w7z.s
GNU C version 3.2 20020617 (experimental) (alpha-dec-osf5.1)
        compiled by GNU C version 3.1.
crash.i:2: error: field `it_interval' has incomplete type
crash.i:3: error: field `it_value' has incomplete type
crash.i:4: internal compiler error: internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.

The problem only happens with -g.  gcc 3.1 is ok as well, so this is a
regression.
	
>How-To-Repeat:
Compile the code above.
	
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted: