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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/66714] gomp4: libgomp.oacc-c-c++-common/atomic_capture-1.c -g ICE
Date: Thu, 02 Jul 2015 11:21:00 -0000
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X-Bugzilla-Keywords: ice-on-valid-code, openacc
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66714

--- Comment #3 from vries at gcc dot gnu.org ---
The cause of the SIGSEGV is that for loc fdata.5 in main._omp_fn.46
DECL_HAS_VALUE_EXPR_P (loc) is set, but DECL_VALUE_EXPR (loc) is NULL:
...
Program received signal SIGSEGV, Segmentation fault.
0x000000000092e8c9 in loc_list_from_tree (loc=0x0, want_address=0, context=0x0)
    at /home/vries/gcc_versions/devel/gomp-4_0-branch/src/gcc/dwarf2out.c:14444
14444     switch (TREE_CODE (loc))
(gdb) up
#1  0x000000000092eeef in loc_list_from_tree (loc=0x7ffff5f03870,
want_address=0, context=0x0)
    at /home/vries/gcc_versions/devel/gomp-4_0-branch/src/gcc/dwarf2out.c:14571
14571                                      want_address, context);
(gdb) l
14566   
14567       case PARM_DECL:
14568       case RESULT_DECL:
14569         if (DECL_HAS_VALUE_EXPR_P (loc))
14570           return loc_list_from_tree (DECL_VALUE_EXPR (loc),
14571                                      want_address, context);
14572         /* FALLTHRU */
14573   
14574       case FUNCTION_DECL:
14575         {
(gdb) call debug_generic_expr (loc)
fdata.5
(gdb) call current_function_name ()
$1 = 0x7ffff5efc190 "main._omp_fn.46"
...