http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47204
Summary: [4.6 Regression] ICE: SIGSEGV in gfc_free_namespace (symbol.c:3323) on invalid code Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassig...@gcc.gnu.org ReportedBy: zso...@seznam.cz ----- testcase.f03 ----- select type (a) ------------------------ Compiler output: $ gfortran testcase.f03 Error: Unexpected end of file in 'testcase.f03' ==8750== Invalid read of size 8 ==8750== at 0x590EC2: gfc_free_namespace (symbol.c:3304) ==8750== by 0x5917EF: gfc_symbol_done_2 (symbol.c:3347) ==8750== by 0x553588: gfc_done_2 (misc.c:294) ==8750== by 0x55EC11: unexpected_eof (parse.c:1845) ==8750== by 0x562F5C: parse_executable (parse.c:3101) ==8750== by 0x5637C1: parse_progunit (parse.c:3939) ==8750== by 0x5643DD: gfc_parse_file (parse.c:4348) ==8750== by 0x59CB45: gfc_be_parse_file (f95-lang.c:250) ==8750== by 0x93A477: toplev_main (toplev.c:579) ==8750== by 0x6369BBC: (below main) (in /lib64/libc-2.11.2.so) ==8750== Address 0x6f16bf0 is 0 bytes inside a block of size 2,552 free'd ==8750== at 0x4C25E0D: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==8750== by 0x550695: gfc_free_case_list (match.c:4361) ==8750== by 0x58BE7C: gfc_free_statements (st.c:230) ==8750== by 0x590EC1: gfc_free_namespace (symbol.c:3302) ==8750== by 0x5917EF: gfc_symbol_done_2 (symbol.c:3347) ==8750== by 0x553588: gfc_done_2 (misc.c:294) ==8750== by 0x55EC11: unexpected_eof (parse.c:1845) ==8750== by 0x562F5C: parse_executable (parse.c:3101) ==8750== by 0x5637C1: parse_progunit (parse.c:3939) ==8750== by 0x5643DD: gfc_parse_file (parse.c:4348) ==8750== by 0x59CB45: gfc_be_parse_file (f95-lang.c:250) ==8750== by 0x93A477: toplev_main (toplev.c:579) ==8750== by 0x6369BBC: (below main) (in /lib64/libc-2.11.2.so) (many invalid reads follow, final crash is caused by double free) f951: 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. Tested revisions: r168552 - crash r165699 - crash r161659 - crash r158095 - OK 4.5 r168062 - OK