https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121448
Bug ID: 121448
Summary: [16 Regression] ICE: verify_gimple failed: gimple cond
condition cannot throw with -O -fsignaling-nans
-ffinite-math-only -fnon-call-exceptions
Product: gcc
Version: 16.0
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
Target: x86_64-pc-linux-gnu
Created attachment 62078
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62078&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -fsignaling-nans -ffinite-math-only
-fnon-call-exceptions testcase.c
testcase.c: In function 'foo':
testcase.c:5:1: error: gimple cond condition cannot throw
5 | foo(double d)
| ^~~
if (d_2(D) == 0.0)
during GIMPLE pass: dom
testcase.c:5:1: internal compiler error: verify_gimple failed
0x2b7ed21 internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:534
0x1632a1d verify_gimple_in_cfg(function*, bool, bool)
/repo/gcc-trunk/gcc/tree-cfg.cc:5588
0x148724a execute_function_todo
/repo/gcc-trunk/gcc/passes.cc:2097
0x148771e execute_todo
/repo/gcc-trunk/gcc/passes.cc:2149
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-20250807085411-r16-3062-g6026a54f2faedf-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/16.0.0/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 --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-20250807085411-r16-3062-g6026a54f2faedf-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.0.0 20250807 (experimental) (GCC)
