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Description of problem:
gcc segfaults while compiling the following C code, which is a much
cut-down version.

Note: in the real code (which is the output of the d2c Dylan compiler) there is
more after the call to bar, but it shares the property of not doing a "return"
(in fact the real function later calls an error function that never returns)

--------------------------------
typedef struct a *a_t;

extern a_t bar(double value);

float foo(float r, float g)
{
    bar(r);
}
--------------------------------
gcc -O2 bug.c

bug.c: In function `foo':
bug.c:8: internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://bugzilla.redhat.com/bugzilla/> for instructions.


Version-Release number of selected component (if applicable):
gcc 3.2-7

How reproducible:
Always

Steps to Reproduce:
gcc -O2 bug.c


Actual Results:  bug.c: In function `foo':
bug.c:8: internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://bugzilla.redhat.com/bugzilla/> for instructions.


Expected Results:  object file and/or errors or warnings


Additional info: