https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123162
Bug ID: 123162
Summary: ICE: tree check: expected class 'type', have
'exceptional' (error_mark) in types_match, at
generic-match-head.cc:63 with -Wlogical-op -mno-sse2
and __bf16
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
Severity: normal
Priority: P3
Component: target
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 63067
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63067&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -Wlogical-op -mno-sse2 testcase.c
testcase.c: In function 'foo':
testcase.c:4:3: error: invalid conversion from type '__bf16' without option
'-msse2'
4 | (0 ? : f) && c;
| ^
testcase.c:4:3: internal compiler error: tree check: expected class 'type',
have 'exceptional' (error_mark) in types_match, at generic-match-head.cc:63
0x2c7684d internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:787
0x924176 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
/repo/gcc-trunk/gcc/tree.cc:9242
0x9f1d78 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
/repo/gcc-trunk/gcc/tree.h:3915
0x9f1d78 types_match
/repo/gcc-trunk/gcc/generic-match-head.cc:63
0x9f1d78 generic_simplify_247(unsigned long, tree_node*, tree_node*,
tree_node*, tree_node**, tree_code)
/repo/build-gcc-trunk-amd64/gcc/generic-match-10.cc:1158
0x213aa05 generic_simplify_EQ_EXPR(unsigned long, tree_code, tree_node*,
tree_node*, tree_node*)
/repo/build-gcc-trunk-amd64/gcc/generic-match-8.cc:8170
0x1194a6a fold_binary_loc(unsigned long, tree_code, tree_node*, tree_node*,
tree_node*)
/repo/gcc-trunk/gcc/fold-const.cc:11045
0x119c70e fold_build2_loc(unsigned long, tree_code, tree_node*, tree_node*,
tree_node*)
/repo/gcc-trunk/gcc/fold-const.cc:13962
0x11b0c00 fold_binary_op_with_conditional_arg
/repo/gcc-trunk/gcc/fold-const.cc:7081
0x1194df3 fold_binary_loc(unsigned long, tree_code, tree_node*, tree_node*,
tree_node*)
/repo/gcc-trunk/gcc/fold-const.cc:11114
0x119c70e fold_build2_loc(unsigned long, tree_code, tree_node*, tree_node*,
tree_node*)
/repo/gcc-trunk/gcc/fold-const.cc:13962
0x11ac761 build_range_check(unsigned long, tree_node*, tree_node*, int,
tree_node*, tree_node*)
/repo/gcc-trunk/gcc/fold-const.cc:5685
0xf9d609 warn_logical_operator(unsigned long, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node*)
/repo/gcc-trunk/gcc/c-family/c-warn.cc:276
0xe82858 parser_build_binary_op(unsigned long, tree_code, c_expr, c_expr)
/repo/gcc-trunk/gcc/c/c-typeck.cc:5072
0xeb3a8e c_parser_binary_expression
/repo/gcc-trunk/gcc/c/c-parser.cc:10518
0xeb4c73 c_parser_conditional_expression
/repo/gcc-trunk/gcc/c/c-parser.cc:10083
0xeb54a4 c_parser_expr_no_commas
/repo/gcc-trunk/gcc/c/c-parser.cc:9996
0xeb5907 c_parser_expression
/repo/gcc-trunk/gcc/c/c-parser.cc:14212
0xeb6137 c_parser_expression_conv
/repo/gcc-trunk/gcc/c/c-parser.cc:14271
0xede7ff c_parser_statement_after_labels
/repo/gcc-trunk/gcc/c/c-parser.cc:8531
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/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-20251216201148-r16-6177-g866bc8a9214b1d-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-20251216201148-r16-6177-g866bc8a9214b1d-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.0.0 20251216 (experimental) (GCC)
