[Bug tree-optimization/27548] [4.2 regression] ICE: SSA corruption - Conflict across an abnormal edge
pinskia at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Thu May 11 09:22:00 GMT 2006
------- Comment #3 from pinskia at gcc dot gnu dot org 2006-05-11 09:22 -------
This is a SCCP issue:
--- t.cc.073t.lim 2006-05-11 02:21:50.000000000 -0700
+++ t.cc.075t.sccp 2006-05-11 02:21:50.000000000 -0700
@@ -53,8 +53,8 @@ void f(int&) (to_be_zapped)
<L16>:;
goto <bb 6> (<L7>);
- # i_29 = PHI <i_40(6)>;
<L17>:;
+ i_29 = NewMins$maxdex_2(ab);
# i_7 = PHI <i_29(8), 1(4)>;
<L9>:;
-----
Reduced testcase:
void g(void);
struct Array
{
int mindex, maxdex;
int InsertAt (const int & t, int n)
{
int *new_data = new int[++this->maxdex - this->mindex + 1];
int i;
for (i = this->mindex; i <= n - 1; i++)
new_data[i] = 1;
new_data[i] = t;
}
Array (void) : mindex (1) {}
};
int NoIndices(void);
void f (int &to_be_zapped)
{
Array NewMins;
int i;
try
{
for (i = 1; i <= NoIndices (); i++)
NewMins.InsertAt (to_be_zapped, NewMins.maxdex);
}catch(...) {}
if (NewMins.maxdex >= 1)
g();
}
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2006-05-11 09:22:21
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27548
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