https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68887
--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
If the tests are compiled on darwin with an instrumented gfortran, execution
gives
==82783==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x602000000150 at pc 0x000101b79d39 bp 0x7fff5e0a6300 sp 0x7fff5e0a62f8
READ of size 4 at 0x602000000150 thread T0
#0 0x101b79d38 in _gfortran_caf_event_query
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100020d38)
#1 0x101b59f48 in MAIN__
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100000f48)
0x602000000151 is located 0 bytes to the right of 1-byte region
[0x602000000150,0x602000000151)
allocated by thread T0 here:
#0 0x101c47f30 in wrap_calloc (/opt/gcc/gcc7a/lib/libasan.4.dylib+0x62f30)
#1 0x101b615e3 in _gfortran_caf_register
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x1000085e3)
#2 0x101b7b47d in _caf_init.1.3510
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x10002247d)
#3 0x1089a1961 (<unknown module>)
#4 0x10899d1ed (<unknown module>)
#5 0x10899c267 (<unknown module>)
#6 0x10899c2fc (<unknown module>)
#7 0x10898e479 (<unknown module>)
#8 0x1089927df (<unknown module>)
#9 0x10898d248 (<unknown module>)
#10 0x10898d035 (<unknown module>)
SUMMARY: AddressSanitizer: heap-buffer-overflow
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100020d38) in
_gfortran_caf_event_query
Shadow bytes around the buggy address:
0x1c03ffffffd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c03ffffffe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c03fffffff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c0400000000: fa fa fd fd fa fa fd fd fa fa 00 07 fa fa 00 06
0x1c0400000010: fa fa 03 fa fa fa 00 00 fa fa 00 06 fa fa 06 fa
=>0x1c0400000020: fa fa 07 fa fa fa 07 fa fa fa[01]fa fa fa 00 00
0x1c0400000030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000070: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==82783==ABORTING
