Math/gsl compilation hangs

[Brook Milligan <brook%nmsu.edu@localhost>]

I’m trying to build math/gsl on my Mac, but clang (Apple clang version 12.0.0 (clang-1200.0.32.29) hangs when libtool compiles randist/discrete.c.  It comes down to, I think, accessing this data structure:

typedef struct {
    size_t N;                      /* max number of elts on stack */
    size_t *v;                     /* array of values on the stack */
    size_t i;                      /* index of top of stack */
} gsl_stack_t;

in this function:

static int
push_stack(gsl_stack_t *s, size_t v)
{
    if ((s->i) >= (s->N)) {
      return -1; /* stack overflow (shouldn't happen) */
    }
    (s->v)[s->i] = v;
    s->i += 1;
    return 0;
}

I am not seeing anything wrong with this code, but perhaps something subtle is off.  In any case, the compilation hangs here:

/Users/brook/Pkgsrc/pkg-2023Q2/bin/mksh ../libtool  --tag=CC    --mode=compile clang -DHAVE_CONFIG_H  -I. -I..  -I..    -O2 -march=native -MT discrete.lo -MD -MP -MF .deps/discrete.Tpo -c -o discrete.lo discrete.c
libtool: compile:  clang -DHAVE_CONFIG_H -I. -I.. -O2 -march=native -MT discrete.lo -MD -MP -MF .deps/discrete.Tpo -c discrete.c  -fno-common -DPIC -o .libs/discrete.o

Various modifications of the push_stack() function body (and nothing else) allow compilation to complete, but anything that accesses the elements of s seems to hang the process.

Any ideas?

Cheers,
Brook