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re PR c++/48212 ([C++0x] ICE: in non_const_var_error, at cp/semantics.c:6700 on invalid code)

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PR c++/48212
	* semantics.c (non_const_var_error): Just return if DECL_INITIAL
	is error_mark_node.

From-SVN: r171748
This commit is contained in:
Jason Merrill 2011-03-30 16:29:13 -04:00 • committed by Jason Merrill
parent e0f89433aa
commit ef5daa257f
4 changed files with 20 additions and 0 deletions
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6
gcc/cp/ChangeLog
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@ -1,3 +1,9 @@
2011-03-30 Jason Merrill <jason@redhat.com>
PR c++/48212
* semantics.c (non_const_var_error): Just return if DECL_INITIAL
is error_mark_node.
2011-03-30 Jason Merrill <jason@redhat.com>
PR c++/48369

3
gcc/cp/semantics.c
View file

@ -6753,6 +6753,9 @@ non_const_var_error (tree r)
tree type = TREE_TYPE (r);
error ("the value of %qD is not usable in a constant "
"expression", r);
/* Avoid error cascade. */
if (DECL_INITIAL (r) == error_mark_node)
return;
if (DECL_DECLARED_CONSTEXPR_P (r))
inform (DECL_SOURCE_LOCATION (r),
"%qD used in its own initializer", r);

2
gcc/testsuite/ChangeLog
View file

@ -1,5 +1,7 @@
2011-03-30 Jason Merrill <jason@redhat.com>
* g++.dg/cpp0x/regress/error-recovery1.C: New.
* g++.dg/cpp0x/regress/isnan.C: New.
* g++.dg/cpp0x/initlist46.C: New.

9
gcc/testsuite/g++.dg/cpp0x/regress/error-recovery1.C Normal file
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@ -0,0 +1,9 @@
// PR c++/48212
// { dg-options -std=c++0x }
template < bool > void
foo ()
{
const bool b =; // { dg-error "" }
foo < b > (); // { dg-error "constant expression" }
};