https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121565
Bug ID: 121565
Summary: ICE (segfault) with LTO and __riscv_vsetvl_e32m8
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: konstantin.vladimirov at gmail dot com
Target Milestone: ---
Reproduction
---
#include <riscv_vector.h>
int main(){
int src_len = 25;
while(src_len > 0) {
size_t vl = __riscv_vsetvl_e32m8(src_len);
src_len -= vl;
}
}
---
Live example:
https://godbolt.org/z/axWMbx4W1
---
Compilation line
gcc -march=rv64gcv -flto test.c
---
gcc version 16.0.0 20250815 (experimental) (crosstool-NG UNKNOWN)
---
Fails on lto1 run.
