[Bug middle-end/114312] ICE: SIGSEGV: infinite recursion in chrec_fold_plus_1 (tree-chrec.cc:336) at -O3 with _BitInt()
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114312
Richard Biener changed:
What|Removed |Added
Status|ASSIGNED|RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Richard Biener ---
Meh, fixed by
commit 73dac51b32575f980289c073969c6d825963d076 (origin/master, origin/HEAD)
Author: Richard Biener
Date: Tue Mar 12 14:00:05 2024 +0100
tree-optimization/114121 - chrec_fold_{plus,multiply} and recursion
The following addresses endless recursion in the
chrec_fold_{plus,multiply} functions when handling sign-conversions.
We only need to apply tricks when we'd fail (there's a chrec in the
converted operand) and we need to make sure to not turn the other
operand into something worse (for the chrec-vs-chrec case).
PR tree-optimization/114121
* tree-chrec.cc (chrec_fold_plus_1): Guard recursion with
converted operand properly.
(chrec_fold_multiply): Likewise. Handle missed recursion.
* gcc.dg/torture/pr114312.c: New testcase.
[Bug middle-end/114312] ICE: SIGSEGV: infinite recursion in chrec_fold_plus_1 (tree-chrec.cc:336) at -O3 with _BitInt()
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114312 Richard Biener changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org --- Comment #2 from Richard Biener --- I will have a look.
[Bug middle-end/114312] ICE: SIGSEGV: infinite recursion in chrec_fold_plus_1 (tree-chrec.cc:336) at -O3 with _BitInt()
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114312 Andrew Pinski changed: What|Removed |Added Last reconfirmed||2024-03-11 Ever confirmed|0 |1 Status|UNCONFIRMED |NEW --- Comment #1 from Andrew Pinski --- Confirmed. I thought there might be a way to hit this without _BitInt but even changing `_BitInt(64)` to `long` causes the ICE/infinite loop to go away.
