http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58345
Bug ID: 58345
Summary: ICE with SIGFPE at -O1 on x86_64-linux-gnu (affecting
trunk and 4.8)
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
The following code causes an ICE when compiled with the current gcc trunk and
4.8 at -O1 only on x86_64-linux (both 32-bit and 64-bit modes).
This is a regression from 4.7.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/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-trunk/configure
--enable-languages=c,c++,objc,obj-c++,fortran,lto
--with-gmp=/usr/local/gcc-trunk --with-mpfr=/usr/local/gcc-trunk
--with-mpc=/usr/local/gcc-trunk --with-cloog=/usr/local/gcc-trunk
--prefix=/usr/local/gcc-trunk
Thread model: posix
gcc version 4.9.0 20130906 (experimental) [trunk revision 202308] (GCC)
$ gcc-trunk -O0 -c small.c
$ gcc-trunk -O2 -c small.c
$ gcc-trunk -O3 -c small.c
$ gcc-trunk -Os -c small.c
$ gcc-4.7 -O1 -c small.c
$ gcc-trunk -O1 -c small.c
small.c: In function ‘foo’:
small.c:7:6: internal compiler error: Floating point exception
void foo ()
^
0x924b2f crash_signal
../../gcc-trunk/gcc/toplev.c:335
0x77ecd3 fold_array_ctor_reference
../../gcc-trunk/gcc/gimple-fold.c:2816
0x77ecd3 fold_ctor_reference
../../gcc-trunk/gcc/gimple-fold.c:2964
0x7827d2 fold_const_aggregate_ref_1(tree_node*, tree_node* (*)(tree_node*))
../../gcc-trunk/gcc/gimple-fold.c:3066
0x78443b fold_const_aggregate_ref
../../gcc-trunk/gcc/gimple-fold.c:3088
0x78443b maybe_fold_reference
../../gcc-trunk/gcc/gimple-fold.c:272
0x784df6 gimple_fold_call
../../gcc-trunk/gcc/gimple-fold.c:1091
0x784df6 fold_stmt_1
../../gcc-trunk/gcc/gimple-fold.c:1200
0x9763c9 fold_marked_statements
../../gcc-trunk/gcc/tree-inline.c:4380
0x980ff6 tree_function_versioning(tree_node*, tree_node*, vec<ipa_replace_map*,
va_gc, vl_embed>*, bool, bitmap_head_def*, bool, bitmap_head_def*,
basic_block_def*)
../../gcc-trunk/gcc/tree-inline.c:5354
0xd85e62 save_inline_function_body
../../gcc-trunk/gcc/ipa-inline-transform.c:368
0xd85e62 inline_transform(cgraph_node*)
../../gcc-trunk/gcc/ipa-inline-transform.c:425
0x880e6f execute_one_ipa_transform_pass
../../gcc-trunk/gcc/passes.c:2039
0x880e6f execute_all_ipa_transforms()
../../gcc-trunk/gcc/passes.c:2079
0x636160 expand_function
../../gcc-trunk/gcc/cgraphunit.c:1702
0x63809d expand_all_functions
../../gcc-trunk/gcc/cgraphunit.c:1814
0x63809d compile()
../../gcc-trunk/gcc/cgraphunit.c:2151
0x638729 finalize_compilation_unit()
../../gcc-trunk/gcc/cgraphunit.c:2228
0x516813 c_write_global_declarations()
../../gcc-trunk/gcc/c/c-decl.c:10125
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.
$ gcc-4.8 -O1 -c small.c
small.c: In function ‘foo’:
small.c:7:6: internal compiler error: Floating point exception
void foo ()
^
0x7b925f crash_signal
../../gcc-4.8.1/gcc/toplev.c:332
0x678f55 fold_array_ctor_reference
../../gcc-4.8.1/gcc/gimple-fold.c:2819
0x678f55 fold_ctor_reference
../../gcc-4.8.1/gcc/gimple-fold.c:2967
0x67bd77 fold_const_aggregate_ref_1(tree_node*, tree_node* (*)(tree_node*))
../../gcc-4.8.1/gcc/gimple-fold.c:3069
0x67cd43 fold_const_aggregate_ref
../../gcc-4.8.1/gcc/gimple-fold.c:3091
0x67cd43 maybe_fold_reference
../../gcc-4.8.1/gcc/gimple-fold.c:277
0x67d434 gimple_fold_call
../../gcc-4.8.1/gcc/gimple-fold.c:1096
0x67d434 fold_stmt_1
../../gcc-4.8.1/gcc/gimple-fold.c:1202
0x7ee097 fold_marked_statements
../../gcc-4.8.1/gcc/tree-inline.c:4237
0x7f42b6 tree_function_versioning(tree_node*, tree_node*, vec<ipa_replace_map*,
va_gc, vl_embed>*, bool, bitmap_head_def*, bool, bitmap_head_def*,
basic_block_def*)
../../gcc-4.8.1/gcc/tree-inline.c:5299
0xb3d7c2 save_inline_function_body
../../gcc-4.8.1/gcc/ipa-inline-transform.c:351
0xb3d7c2 inline_transform(cgraph_node*)
../../gcc-4.8.1/gcc/ipa-inline-transform.c:408
0x7319c7 execute_one_ipa_transform_pass
../../gcc-4.8.1/gcc/passes.c:2172
0x7319c7 execute_all_ipa_transforms()
../../gcc-4.8.1/gcc/passes.c:2208
0x59f876 expand_function
../../gcc-4.8.1/gcc/cgraphunit.c:1633
0x5a0d06 expand_all_functions
../../gcc-4.8.1/gcc/cgraphunit.c:1744
0x5a0d06 compile()
../../gcc-4.8.1/gcc/cgraphunit.c:2042
0x5a10b9 finalize_compilation_unit()
../../gcc-4.8.1/gcc/cgraphunit.c:2119
0x4e0453 c_write_global_declarations()
../../gcc-4.8.1/gcc/c/c-decl.c:10118
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.
$
---------------------------------------
struct U {};
static struct U a[1] = {};
extern void bar(struct U);
void foo ()
{
bar (a[0]);
}
int main ()
{
foo();
return 0;
}
