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debug/9422: g++ 3.4: ICE in gen_decl_die
- From: snyder at fnal dot gov
- To: gcc-gnats at gcc dot gnu dot org
- Date: Thu, 23 Jan 2003 11:41:35 CST
- Subject: debug/9422: g++ 3.4: ICE in gen_decl_die
- Reply-to: snyder at fnal dot gov
>Number: 9422
>Category: debug
>Synopsis: <synopsis of the problem (one line)>
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: ice-on-legal-code
>Submitter-Id: net
>Arrival-Date: Thu Jan 23 17:46:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: scott snyder
>Release: 3.4 20030123 (experimental)
>Organization:
<organization of PR author (multiple lines)>
>Environment:
System: Linux karma 2.4.19-emp_2419p5a829i #1 Tue Sep 3 17:42:17 EST 2002 i686 unknown
Architecture: i686
<machine, os, target, libraries (multiple lines)>
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../gcc/configure --prefix=/usr/local/gcc --enable-threads=posix --enable-long-long : (reconfigured)
>Description:
gcc crashes compiling the following code if -g is used:
$ ./cc1plus -g x.cc
bool is_nan_aux1() bool is_nan_aux1()
x.cc:5: internal compiler error: in gen_decl_die, at dwarf2out.c:12117
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
$
It's dying at this switch in dwarf2out.c:
static void
gen_decl_die (decl, context_die)
tree decl;
dw_die_ref context_die;
{
tree origin;
if (DECL_P (decl) && DECL_IGNORED_P (decl))
return;
switch (TREE_CODE (decl))
{
Here is decl when it dies:
(gdb) call debug_tree (decl)
<alias_decl 0x4005ff50 x
type <real_type 0x40024d90 double type_6 DF
size <integer_cst 0x4001a920 constant 64>
unit size <integer_cst 0x4001ab40 constant 8>
align 64 symtab 0 alias set -1 precision 64
pointer_to_this <pointer_type 0x4002b070>>
external VOID file x.cc line 3
align 1 context <function_decl 0x40059cb0 is_nan_aux1> initial <component_ref 0x40028c40> chain <var_decl 0x4005fee0>>
ALIAS_DECL isn't one of the cases handled in the switch...
>How-To-Repeat:
-----------------
bool is_nan_aux1()
{
union { double x; };
return true;
}
-----------------
>Fix:
<how to correct or work around the problem, if known (multiple lines)>
>Release-Note:
>Audit-Trail:
>Unformatted: