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From: "zeccav at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/99255] ICE in gfc_dt_upper_string, at fortran/module.c:441 Date: Thu, 25 Feb 2021 08:31:06 +0000 [thread overview] Message-ID: <bug-99255-4-TMtn8Y6yBo@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-99255-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99255 Vittorio Zecca <zeccav at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |zeccav at gmail dot com --- Comment #1 from Vittorio Zecca <zeccav at gmail dot com> --- A sanitized version of the compiler fails earlier at class.c line 487 "if (derived->attr.unlimited_polymorphic)" ~/local/gcc-150221-sanitized/bin/gfortran -S z1.f90 ================================================================= ==8457==ERROR: AddressSanitizer: heap-use-after-free on address 0x60400000172d at pc 0x000000496c01 bp 0x7fffca9abcd0 sp 0x7fffca9abcc8 READ of size 1 at 0x60400000172d thread T0 #0 0x496c00 in get_unique_type_string ../../gcc-150221/gcc/fortran/class.c:487 #1 0x4972c9 in get_unique_hashed_string ../../gcc-150221/gcc/fortran/class.c:524 #2 0x498610 in gfc_build_class_symbol(gfc_typespec*, symbol_attribute*, gfc_array_spec**) ../../gcc-150221/gcc/fortran/class.c:672 #3 0x709d96 in copy_ts_from_selector_to_associate ../../gcc-150221/gcc/fortran/match.c:6237 #4 0x70dc8a in gfc_match_select_type() ../../gcc-150221/gcc/fortran/match.c:6431 #5 0x7f2b01 in match_word ../../gcc-150221/gcc/fortran/parse.c:65 #6 0x7f4b32 in decode_statement ../../gcc-150221/gcc/fortran/parse.c:428 #7 0x7fd6c8 in next_free ../../gcc-150221/gcc/fortran/parse.c:1316 #8 0x7fe845 in next_statement ../../gcc-150221/gcc/fortran/parse.c:1548 #9 0x80cb86 in parse_spec ../../gcc-150221/gcc/fortran/parse.c:3967 #10 0x81bef7 in parse_progunit ../../gcc-150221/gcc/fortran/parse.c:5896 #11 0x821732 in gfc_parse_file() ../../gcc-150221/gcc/fortran/parse.c:6437 #12 0xa64b7c in gfc_be_parse_file ../../gcc-150221/gcc/fortran/f95-lang.c:212 #13 0x33fa43d in compile_file ../../gcc-150221/gcc/toplev.c:457 #14 0x34097a2 in do_compile ../../gcc-150221/gcc/toplev.c:2197 #15 0x340a39f in toplev::main(int, char**) ../../gcc-150221/gcc/toplev.c:2336 #16 0x7f24cb9 in main ../../gcc-150221/gcc/main.c:39 #17 0x15054552b1e1 in __libc_start_main (/usr/lib64/libc.so.6+0x281e1) #18 0x41958d in _start (/home/vitti/1TB/local/gcc-150221-sanitized/libexec/gcc/x86_64-pc-linux-gnu/11.0.0/f951+0x41958d) 0x60400000172d is located 29 bytes inside of 48-byte region [0x604000001710,0x604000001740) freed by thread T0 here: #0 0x15054647d797 in __interceptor_free ../../../../gcc-150221/libsanitizer/asan/asan_malloc_linux.cpp:127 #1 0xa1cd6f in gfc_delete_symtree(gfc_symtree**, char const*) ../../gcc-150221/gcc/fortran/symbol.c:2964 #2 0xa25801 in gfc_restore_last_undo_checkpoint() ../../gcc-150221/gcc/fortran/symbol.c:3706 #3 0xa25a5f in gfc_undo_symbols() ../../gcc-150221/gcc/fortran/symbol.c:3739 #4 0x80175f in reject_statement ../../gcc-150221/gcc/fortran/parse.c:2678 #5 0x7f2bb0 in match_word ../../gcc-150221/gcc/fortran/parse.c:70 #6 0x7f42d9 in decode_statement ../../gcc-150221/gcc/fortran/parse.c:361 #7 0x7fd6c8 in next_free ../../gcc-150221/gcc/fortran/parse.c:1316 #8 0x7fe845 in next_statement ../../gcc-150221/gcc/fortran/parse.c:1548 #9 0x8088f0 in parse_derived ../../gcc-150221/gcc/fortran/parse.c:3387 #10 0x80c81b in parse_spec ../../gcc-150221/gcc/fortran/parse.c:3928 #11 0x81bef7 in parse_progunit ../../gcc-150221/gcc/fortran/parse.c:5896 #12 0x821732 in gfc_parse_file() ../../gcc-150221/gcc/fortran/parse.c:6437 #13 0xa64b7c in gfc_be_parse_file ../../gcc-150221/gcc/fortran/f95-lang.c:212 #14 0x33fa43d in compile_file ../../gcc-150221/gcc/toplev.c:457 #15 0x34097a2 in do_compile ../../gcc-150221/gcc/toplev.c:2197 #16 0x340a39f in toplev::main(int, char**) ../../gcc-150221/gcc/toplev.c:2336 #17 0x7f24cb9 in main ../../gcc-150221/gcc/main.c:39 #18 0x15054552b1e1 in __libc_start_main (/usr/lib64/libc.so.6+0x281e1) previously allocated by thread T0 here: #0 0x15054647dc47 in __interceptor_calloc ../../../../gcc-150221/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x83c3e31 in xcalloc ../../gcc-150221/libiberty/xmalloc.c:162 #2 0xa1cade in gfc_new_symtree(gfc_symtree**, char const*) ../../gcc-150221/gcc/fortran/symbol.c:2934 #3 0xa20eed in gfc_get_sym_tree(char const*, gfc_namespace*, gfc_symtree**, bool) ../../gcc-150221/gcc/fortran/symbol.c:3384 #4 0xa21e11 in gfc_get_ha_sym_tree(char const*, gfc_symtree**) ../../gcc-150221/gcc/fortran/symbol.c:3469 #5 0x6df4b3 in gfc_match_sym_tree(gfc_symtree**, int) ../../gcc-150221/gcc/fortran/match.c:706 #6 0x84d6f7 in match_variable ../../gcc-150221/gcc/fortran/primary.c:4024 #7 0x84f424 in gfc_match_variable(gfc_expr**, int) ../../gcc-150221/gcc/fortran/primary.c:4168 #8 0x6e1a00 in gfc_match(char const*, ...) ../../gcc-150221/gcc/fortran/match.c:1162 #9 0x6e2894 in gfc_match_assignment() ../../gcc-150221/gcc/fortran/match.c:1340 #10 0x7f2b01 in match_word ../../gcc-150221/gcc/fortran/parse.c:65 #11 0x7f42d9 in decode_statement ../../gcc-150221/gcc/fortran/parse.c:361 #12 0x7fd6c8 in next_free ../../gcc-150221/gcc/fortran/parse.c:1316 #13 0x7fe845 in next_statement ../../gcc-150221/gcc/fortran/parse.c:1548 #14 0x8088f0 in parse_derived ../../gcc-150221/gcc/fortran/parse.c:3387 #15 0x80c81b in parse_spec ../../gcc-150221/gcc/fortran/parse.c:3928 #16 0x81bef7 in parse_progunit ../../gcc-150221/gcc/fortran/parse.c:5896 #17 0x821732 in gfc_parse_file() ../../gcc-150221/gcc/fortran/parse.c:6437 #18 0xa64b7c in gfc_be_parse_file ../../gcc-150221/gcc/fortran/f95-lang.c:212 #19 0x33fa43d in compile_file ../../gcc-150221/gcc/toplev.c:457 #20 0x34097a2 in do_compile ../../gcc-150221/gcc/toplev.c:2197 #21 0x340a39f in toplev::main(int, char**) ../../gcc-150221/gcc/toplev.c:2336 #22 0x7f24cb9 in main ../../gcc-150221/gcc/main.c:39 #23 0x15054552b1e1 in __libc_start_main (/usr/lib64/libc.so.6+0x281e1) SUMMARY: AddressSanitizer: heap-use-after-free ../../gcc-150221/gcc/fortran/class.c:487 in get_unique_type_string
next prev parent reply other threads:[~2021-02-25 8:31 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-02-24 17:30 [Bug fortran/99255] New: " gscfq@t-online.de 2021-02-25 8:31 ` zeccav at gmail dot com [this message] 2021-04-18 11:22 ` [Bug fortran/99255] " dominiq at lps dot ens.fr 2021-04-18 20:19 ` anlauf at gcc dot gnu.org
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