https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115879
Bug ID: 115879
Summary: ICE: verify_flow_info failed: missing REG_EH_REGION
note at the end of bb 6 with -O -fnon-call-exceptions
-finstrument-functions and _BitInt()
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 58637
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58637&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -fnon-call-exceptions -finstrument-functions
testcase.c
testcase.c: In function 'foo':
testcase.c:10:1: error: missing REG_EH_REGION note at the end of bb 6
10 | }
| ^
during RTL pass: subreg3
testcase.c:10:1: internal compiler error: verify_flow_info failed
0x2a7433b internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:491
0xfb501e verify_flow_info()
/repo/gcc-trunk/gcc/cfghooks.cc:287
0x13f66b7 execute_function_todo
/repo/gcc-trunk/gcc/passes.cc:2101
0x13f6bee execute_todo
/repo/gcc-trunk/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 <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-r15-1975-20240711091856-g4e0aa05f67c-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/15.0.0/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 --enable-libsanitizer
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r15-1975-20240711091856-g4e0aa05f67c-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20240711 (experimental) (GCC)
