https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63788
Bug ID: 63788
Summary: ICE: SIGSEGV in contains_struct_check with -O
-fsanitize=undefined on almost any fortran code
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
Created attachment 33925
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33925&action=edit
reduced testcase
Compiler output:
$ gcc -O -fsanitize=undefined testcase.f
==32638== Invalid read of size 2
==32638== at 0xEA80B8: contains_struct_check (tree.h:2864)
==32638== by 0xEA80B8: build_call_expr_loc_array(unsigned int, tree_node*,
int, tree_node**) (tree.c:10556)
==32638== by 0xEA8240: build_call_expr_loc(unsigned int, tree_node*, int,
...) (tree.c:10589)
==32638== by 0xC62757: instrument_object_size(gimple_stmt_iterator*, bool)
(ubsan.c:1522)
==32638== by 0xC664F0: (anonymous namespace)::pass_ubsan::execute(function*)
(ubsan.c:1670)
==32638== by 0xB4E9D8: execute_one_pass(opt_pass*) (passes.c:2269)
==32638== by 0xB4EF85: execute_pass_list_1(opt_pass*) (passes.c:2321)
==32638== by 0xB4EFD8: execute_pass_list(function*, opt_pass*)
(passes.c:2332)
==32638== by 0xB4D734: do_per_function_toporder(void (*)(function*, void*),
void*) (passes.c:1638)
==32638== by 0xB4F5C6: execute_ipa_pass_list(opt_pass*) (passes.c:2670)
==32638== by 0x85A7B4: ipa_passes (cgraphunit.c:2049)
==32638== by 0x85A7B4: symbol_table::compile() (cgraphunit.c:2172)
==32638== by 0x85C357: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2325)
==32638== by 0xAAF1C7: write_global_declarations() (langhooks.c:339)
==32638== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==32638==
testcase.f:3:0:
end
^
internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
Almost any fortran code causes this ICE.
Tested revisions:
r217250 - ICE
