https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80659
Bug ID: 80659
Summary: [7 regression] -fsanitize=address evokes ICE in in
gimplify_switch_expr
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: jim at meyering dot net
Target Milestone: ---
The following gets an ICE with gcc 7 (latest from git at git-svn-id:
svn+ssh://gcc.gnu.org/svn/gcc/trunk@247659
138bc75d-0d04-0410-961f-82ee72b054a4), yet gets no ICE with fedora 25's 6.3.1
20161221.
FYI, this was minimized using creduce from emacs/src/process.c.
$ cat bad.c
typedef a;
typedef b;
struct c {
b d
} e() {
union {
struct c f
} g;
switch (g.f.d) {
(a[]){};
h();
}
}
$ gcc -c -fsanitize=address bad.c
bad.c:1:9: warning: type defaults to 'int' in declaration of 'a'
[-Wimplicit-int]
typedef a;
^
bad.c:2:9: warning: type defaults to 'int' in declaration of 'b'
[-Wimplicit-int]
typedef b;
^
bad.c:5:1: warning: no semicolon at end of struct or union
} e() {
^
bad.c: In function 'e':
bad.c:8:3: warning: no semicolon at end of struct or union
} g;
^
bad.c:11:5: warning: implicit declaration of function 'h'
[-Wimplicit-function-declaration]
h();
^
bad.c:10:10: warning: statement will never be executed [-Wswitch-unreachable]
(a[]){};
^
bad.c:9:3: internal compiler error: in gimplify_switch_expr, at gimplify.c:2301
switch (g.f.d) {
^~~~~~
0x7c6d6d gimplify_switch_expr
/data/users/meyering/x/w/co/gcc/gcc/gimplify.c:2301
0x7c890a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/data/users/meyering/x/w/co/gcc/gcc/gimplify.c:11466
0x7ca888 gimplify_stmt(tree_node**, gimple**)
/data/users/meyering/x/w/co/gcc/gcc/gimplify.c:6517
0x7c8e6b gimplify_statement_list
/data/users/meyering/x/w/co/gcc/gcc/gimplify.c:1718
0x7c8e6b gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/data/users/meyering/x/w/co/gcc/gcc/gimplify.c:11686
0x7ca888 gimplify_stmt(tree_node**, gimple**)
/data/users/meyering/x/w/co/gcc/gcc/gimplify.c:6517
0x7cb1c8 gimplify_bind_expr
/data/users/meyering/x/w/co/gcc/gcc/gimplify.c:1292
0x7c86ea gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/data/users/meyering/x/w/co/gcc/gcc/gimplify.c:11458
0x7ca888 gimplify_stmt(tree_node**, gimple**)
/data/users/meyering/x/w/co/gcc/gcc/gimplify.c:6517
0x7cbbe7 gimplify_body(tree_node*, bool)
/data/users/meyering/x/w/co/gcc/gcc/gimplify.c:12455
0x7cbf95 gimplify_function_tree(tree_node*)
/data/users/meyering/x/w/co/gcc/gcc/gimplify.c:12613
0x69cf0f cgraph_node::analyze()
/data/users/meyering/x/w/co/gcc/gcc/cgraphunit.c:657
0x69f6f7 analyze_functions
/data/users/meyering/x/w/co/gcc/gcc/cgraphunit.c:1118
0x6a00d2 symbol_table::finalize_compilation_unit()
/data/users/meyering/x/w/co/gcc/gcc/cgraphunit.c:2603
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
