[Bug tree-optimization/105484] New: [12/13 Regression] ICE: verify_flow_info failed: BB 2 cannot throw but has an EH edge with -Os -march=cannonlake -fnon-call-exceptions -fno-tree-dce -fno-tree-forwprop

zsojka at seznam dot cz gcc-bugzilla@gcc.gnu.org
Wed May 4 18:37:59 GMT 2022


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105484

            Bug ID: 105484
           Summary: [12/13 Regression] ICE: verify_flow_info failed: BB 2
                    cannot throw but has an EH edge with -Os
                    -march=cannonlake -fnon-call-exceptions -fno-tree-dce
                    -fno-tree-forwprop
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu

Created attachment 52927
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52927&action=edit
reduced testcase

Compiler output:
$ x86_64-pc-linux-gnu-gcc -Os -march=cannonlake -fnon-call-exceptions
-fno-tree-dce -fno-tree-forwprop testcase.c 
testcase.c: In function 'foo':
testcase.c:6:1: error: BB 2 cannot throw but has an EH edge
    6 | foo (int i)
      | ^~~
during GIMPLE pass: isel
testcase.c:6:1: internal compiler error: verify_flow_info failed
0xee6463 verify_flow_info()
        /repo/gcc-trunk/gcc/cfghooks.cc:284
0x12f730a execute_function_todo
        /repo/gcc-trunk/gcc/passes.cc:2097
0x12f788b execute_todo
        /repo/gcc-trunk/gcc/passes.cc:2139
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r13-112-20220504095402-g9c6a4beeed5-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/13.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r13-112-20220504095402-g9c6a4beeed5-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.0.0 20220504 (experimental) (GCC)


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