[Bug gcov-profile/51297] [4.7 regression] Many gcov tests FAIL on Tru64, Solaris 8 and 9

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51297

--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-11-24 19:46:20 UTC ---
> the names being entered into the array are unique, so there is a total ordering
> -- I think that's a red herring.  I think the problem is the string read from
> the data file is corrupted in some way.  Is that clueful enough?

Very likely a debugging artifact.  Here's my backtrace:

#0  name_search (a_=0x554a0, b_=0x0)
    at /nile.build/botcazou/gcc-head/src/gcc/gcov.c:838
#1  0xff2360e0 in bsearch () from /usr/lib/libc.so.1
#2  0x00015f34 in find_source (file_name=0x554a0 "gcov-1.c")
    at /nile.build/botcazou/gcc-head/src/gcc/gcov.c:866
#3  0x0003a828 in read_graph_file ()
    at /nile.build/botcazou/gcc-head/src/gcc/gcov.c:1017
#4  process_file (file_name=<optimized out>)
    at /nile.build/botcazou/gcc-head/src/gcc/gcov.c:571
#5  main (argc=-1814981296, argv=0xffbefbe4)
    at /nile.build/botcazou/gcc-head/src/gcc/gcov.c:423

In fact the array is empty:

(gdb) p n_names
$1 = 0
(gdb) p names
$2 = (name_map_t *) 0x0