https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64778
Bug ID: 64778
Summary: ICE on invalid code on x86_64-linux-gnu: tree check:
expected class ‘type’, have ‘exceptional’ (error_mark)
in create_tmp_from_val, at gimplify.c:491
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
The following (invalid) code causes an ICE when compiled with the current gcc
trunk on x86_64-linux-gnu.
It is a regression from 4.9.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-unknown-linux-gnu/5.0.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 5.0.0 20150122 (experimental) [trunk revision 220011] (GCC)
$
$ gcc-4.9 -c small.c
small.c: In function ‘foo’:
small.c:4:13: error: expected expression before ‘,’ token
a ^= foo (,);
^
small.c:4:8: error: too many arguments to function ‘foo’
a ^= foo (,);
^
small.c:1:5: note: declared here
int foo (int p)
^
small.c:4: confused by earlier errors, bailing out
$
$ gcc-trunk -c small.c
small.c: In function ‘foo’:
small.c:4:13: error: expected expression before ‘,’ token
a ^= foo (,);
^
small.c:4:8: error: too many arguments to function ‘foo’
a ^= foo (,);
^
small.c:1:5: note: declared here
int foo (int p)
^
small.c:4:8: internal compiler error: tree check: expected class ‘type’, have
‘exceptional’ (error_mark) in create_tmp_from_val, at gimplify.c:491
a ^= foo (,);
^
0xce76c7 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc-trunk/gcc/tree.c:9341
0x89cb90 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
../../gcc-trunk/gcc/tree.h:2969
0x89cb90 create_tmp_from_val
../../gcc-trunk/gcc/gimplify.c:491
0x89cb90 lookup_tmp_var
../../gcc-trunk/gcc/gimplify.c:527
0x89cb90 internal_get_tmp_var
../../gcc-trunk/gcc/gimplify.c:557
0x896299 get_initialized_tmp_var(tree_node*, gimple_statement_base**,
gimple_statement_base**)
../../gcc-trunk/gcc/gimplify.c:594
0x896299 gimplify_save_expr
../../gcc-trunk/gcc/gimplify.c:4882
0x896299 gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
../../gcc-trunk/gcc/gimplify.c:8183
0x89a1f6 gimplify_stmt(tree_node**, gimple_statement_base**)
../../gcc-trunk/gcc/gimplify.c:5514
0x89a9f1 gimplify_compound_expr
../../gcc-trunk/gcc/gimplify.c:4837
0x897063 gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
../../gcc-trunk/gcc/gimplify.c:7886
0x89a1f6 gimplify_stmt(tree_node**, gimple_statement_base**)
../../gcc-trunk/gcc/gimplify.c:5514
0x89738b gimplify_statement_list
../../gcc-trunk/gcc/gimplify.c:1483
0x89738b gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
../../gcc-trunk/gcc/gimplify.c:8312
0x89a1f6 gimplify_stmt(tree_node**, gimple_statement_base**)
../../gcc-trunk/gcc/gimplify.c:5514
0x89afc5 gimplify_bind_expr
../../gcc-trunk/gcc/gimplify.c:1132
0x8957ac gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
../../gcc-trunk/gcc/gimplify.c:8094
0x89a1f6 gimplify_stmt(tree_node**, gimple_statement_base**)
../../gcc-trunk/gcc/gimplify.c:5514
0x89ba7b gimplify_body(tree_node*, bool)
../../gcc-trunk/gcc/gimplify.c:9048
0x89c066 gimplify_function_tree(tree_node*)
../../gcc-trunk/gcc/gimplify.c:9202
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
--------------------
int foo (int p)
{
int a;
a ^= foo (,);
return a;
}
