https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78719
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-15
Ever confirmed|0 |1
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed. An instrumented gfortran gives
../../work/gcc/fortran/trans-decl.c:1472:29: runtime error: member access
within null pointer of type 'struct gfc_symbol'
ASAN:DEADLYSIGNAL
=================================================================
==74738==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000110 (pc
0x000100561635 bp 0x7fff5fbfe0a0 sp 0x7fff5fbfdf40 T0)
==74738==The signal is caused by a READ memory access.
==74738==Hint: address points to the zero page.
#0 0x100561634 in gfc_get_symbol_decl(gfc_symbol*)
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x100561634)
#1 0x1005f0fc7 in gfc_conv_variable(gfc_se*, gfc_expr*)
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x1005f0fc7)
#2 0x1005ce99c in gfc_conv_expr(gfc_se*, gfc_expr*)
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x1005ce99c)
#3 0x100642a40 in gfc_trans_pointer_assignment(gfc_expr*, gfc_expr*)
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x100642a40)
#4 0x100648154 in gfc_trans_pointer_assign(gfc_code*)
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x100648154)
#5 0x100438fc6 in trans_code(gfc_code*, tree_node*)
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x100438fc6)
#6 0x10043a9af in gfc_trans_code(gfc_code*)
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x10043a9af)
#7 0x100586645 in gfc_generate_function_code(gfc_namespace*)
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x100586645)
#8 0x10043aa36 in gfc_generate_code(gfc_namespace*)
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x10043aa36)
#9 0x10028d66e in translate_all_program_units(gfc_namespace*)
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x10028d66e)
#10 0x1002a8776 in gfc_parse_file()
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x1002a8776)
#11 0x100405913 in gfc_be_parse_file()
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x100405913)
#12 0x104b49754 in compile_file()
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x104b49754)
#13 0x104b521ed in do_compile()
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x104b521ed)
#14 0x106c37bfe in toplev::main(int, char**)
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x106c37bfe)
#15 0x106c3cf17 in main
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x106c3cf17)
#16 0x7fffcfa5a254 in start (/usr/lib/system/libdyld.dylib+0x5254)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV
(/opt/gcc/gcc7g/libexec/gcc/x86_64-apple-darwin16.1.0/7.0.0/f951+0x100561634)
in gfc_get_symbol_decl(gfc_symbol*)
==74738==ABORTING
==74738==WARNING: ASan is ignoring requested __asan_handle_no_return: stack
top: 0x7fff5fc00000; bottom 0x000154e90000; size: 0x7ffe0ad70000
(140729080283136)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
pr78719.f90:13:0:
s => g
internal compiler error: Abort trap: 6
