------- Comment #12 from jakub at gcc dot gnu dot org 2010-03-17 10:58 -------
Reduced testcase at -g -O2 on x86_64 grows during var-tracking get_max_uid ()
from ~ 22000 to over a 1000000. Adding ten X4's instead of 1 of course eats
even more memory.
extern void *f1 (void *, void *, void *);
extern void *f2 (const char *, int, int, int, void *(*) ());
extern void *f3 (const char *);
extern void *f4 (void *s);
extern void *f5 (void *);
void test (void)
{
#define X1 f1 (f2 ("a", 1, 0, 0, f5), \
f4 (({ const char *a = "b"; f3 (a); })), \
({ const char *a = "c"; f3 (a); }));
#define X2 X1 X1 X1 X1 X1 X1 X1 X1 X1 X1
#define X3 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2
#define X4 X3 X3 X3 X3 X3 X3 X3 X3 X3 X3
X4
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43058
