[Bug tree-optimization/115387] [15 regression] RISC-V: ICE in iovsprintf.c since r15-1081-ge14afbe2d1c

[ewlu at rivosinc dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115387

Edwin Lu  changed:

   What|Removed |Added

 CC||ewlu at rivosinc dot com,
   ||law at gcc dot gnu.org,
   ||pan2.li at intel dot com,
   ||patrick at rivosinc dot com
Summary|[15 regression] RISC-V: ICE |[15 regression] RISC-V: ICE
   |in iovsprintf.c |in iovsprintf.c since
   ||r15-1081-ge14afbe2d1c
 Target||riscv

--- Comment #1 from Edwin Lu  ---
Bisected to r15-1081-ge14afbe2d1c being the first bad commit

[Bug tree-optimization/115387] [15 regression] RISC-V: ICE in iovsprintf.c since r15-1081-ge14afbe2d1c

[pan2.li at intel dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115387

--- Comment #2 from Li Pan  ---
(In reply to Edwin Lu from comment #1)
> Bisected to r15-1081-ge14afbe2d1c being the first bad commit

Ack, thanks Edwin, will try to reproduce this.

[Bug tree-optimization/115387] [15 regression] RISC-V: ICE in iovsprintf.c since r15-1081-ge14afbe2d1c

[dkm at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115387

Marc Poulhiès  changed:

   What|Removed |Added

 CC||dkm at gcc dot gnu.org

--- Comment #3 from Marc Poulhiès  ---
Created attachment 58392
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58392&action=edit
preprocessed file

Preprocessed file triggering the error

[Bug tree-optimization/115387] [15 regression] RISC-V: ICE in iovsprintf.c since r15-1081-ge14afbe2d1c

[dkm at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115387

--- Comment #4 from Marc Poulhiès  ---
This is command line that triggers the same error in all the nightly builds for
riscv32/64 compiler explorer.

```
$ riscv32-unknown-linux-gnu-gcc  -g -O2   -march=rv32gc -mabi=ilp32d   input.c
-c -std=gnu11 -fgnu89-inline  -g -O2 -Wall -Wwrite-strings -Wundef
-fmerge-all-constants -frounding-math -fno-stack-protector -fno-common
-Wstrict-prototypes -Wold-style-definition -fmath-errno-fPIE  
-ftls-model=initial-exec -nostdinc  -o iovsprintf.o
iovsprintf.c: In function '__vsprintf_internal':
iovsprintf.c:34:1: error: definition in block 5 follows the use
   34 | __vsprintf_internal (char *string, size_t maxlen,
  | ^~~
for SSA_NAME: _9 in statement:
prephitmp_36 = (char *) _9;
during GIMPLE pass: widening_mul
iovsprintf.c:34:1: internal compiler error: verify_ssa failed
0x162fd0f verify_ssa(bool, bool)
   
/mnt/barryallen/dkm/git/crosstool-ng/.build/riscv32-unknown-linux-gnu/src/gcc/gcc/tree-ssa.cc:1203
0x1292a65 execute_function_todo
   
/mnt/barryallen/dkm/git/crosstool-ng/.build/riscv32-unknown-linux-gnu/src/gcc/gcc/passes.cc:2096
0x1292ece execute_todo
   
/mnt/barryallen/dkm/git/crosstool-ng/.build/riscv32-unknown-linux-gnu/src/gcc/gcc/passes.cc:2143
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See  for instructions.
```

[Bug tree-optimization/115387] [15 regression] RISC-V: ICE in iovsprintf.c since r15-1081-ge14afbe2d1c

[pan2.li at intel dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115387

--- Comment #5 from Li Pan  ---
Thanks all. I can reproduce this now.
Sorry I didn't run the test with glibc(only newlib), will take care of it ASAP.

[Bug tree-optimization/115387] [15 regression] RISC-V: ICE in iovsprintf.c since r15-1081-ge14afbe2d1c

[ubizjak at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115387

--- Comment #6 from Uroš Bizjak  ---
The testcase is at [1].

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115404#c4

[Bug tree-optimization/115387] [15 regression] RISC-V: ICE in iovsprintf.c since r15-1081-ge14afbe2d1c

[pan2.li at intel dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115387

--- Comment #7 from Li Pan  ---
Thanks a lot. I am testing a fix, and will send it out after no surprise.

[Bug tree-optimization/115387] [15 regression] RISC-V: ICE in iovsprintf.c since r15-1081-ge14afbe2d1c

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115387

Sam James  changed:

   What|Removed |Added

 CC||dcb314 at hotmail dot com

--- Comment #8 from Sam James  ---
*** Bug 115414 has been marked as a duplicate of this bug. ***