[Bug tree-optimization/18602] New: segfault on a huge switch statement.

[kazu at cs dot umass dot edu]

Here is basically the same testcase as PR18599 except that
we have more switch cases.  This testcase segfaults.

cc1 is from today's mainline with checking disabled.

#define CL0(a) case a: return a;
#define CL1(a) CL0(a##0) CL0(a##1) CL0(a##2) CL0(a##3) CL0(a##4) CL0(a##5) \
 CL0(a##6) CL0(a##7) CL0(a##8) CL0(a##9)
#define CL2(a) CL1(a##0) CL1(a##1) CL1(a##2) CL1(a##3) CL1(a##4) CL1(a##5) \
 CL1(a##6) CL1(a##7) CL1(a##8) CL1(a##9)
#define CL3(a) CL2(a##0) CL2(a##1) CL2(a##2) CL2(a##3) CL2(a##4) CL2(a##5) \
 CL2(a##6) CL2(a##7) CL2(a##8) CL2(a##9)
#define CL4(a) CL3(a##0) CL3(a##1) CL3(a##2) CL3(a##3) CL3(a##4) CL3(a##5) \
 CL3(a##6) CL3(a##7) CL3(a##8) CL3(a##9)
#define CL5(a) CL4(a##0) CL4(a##1) CL4(a##2) CL4(a##3) CL4(a##4) CL4(a##5) \
 CL4(a##6) CL4(a##7) CL4(a##8) CL4(a##9)
#define CL6(a) CL5(a##0) CL5(a##1) CL5(a##2) CL5(a##3) CL5(a##4) CL5(a##5) \
 CL5(a##6) CL5(a##7) CL5(a##8) CL5(a##9)

void f();

int
a (int b)
{
  switch (b)
   {
     CL6(1)
   }
}

-- 
           Summary: segfault on a huge switch statement.
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: kazu at cs dot umass dot edu
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18602