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PR c++/84560 - ICE capturing multi-dimensional VLA.

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* tree.c (array_of_runtime_bound_p): False if the element is
	variably-modified.

From-SVN: r258023
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Jason Merrill 2018-02-26 21:45:56 -05:00 • committed by Jason Merrill
parent a2444ce970
commit ed75f594a9
3 changed files with 18 additions and 0 deletions
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4
gcc/cp/ChangeLog
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@ -1,5 +1,9 @@
2018-02-26 Jason Merrill <jason@redhat.com>
PR c++/84560 - ICE capturing multi-dimensional VLA.
* tree.c (array_of_runtime_bound_p): False if the element is
variably-modified.
PR c++/84441 - ICE with base initialized from ?:
* call.c (unsafe_copy_elision_p): Handle COND_EXPR.

2
gcc/cp/tree.c
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@ -1043,6 +1043,8 @@ array_of_runtime_bound_p (tree t)
{
if (!t || TREE_CODE (t) != ARRAY_TYPE)
return false;
if (variably_modified_type_p (TREE_TYPE (t), NULL_TREE))
return false;
tree dom = TYPE_DOMAIN (t);
if (!dom)
return false;

12
gcc/testsuite/g++.dg/cpp0x/lambda/lambda-vla2.C Normal file
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@ -0,0 +1,12 @@
// PR c++/84560
// { dg-do compile { target c++11 } }
// { dg-options "" }
void f() {
int n = 1;
int m = 1;
int d[n][m];
[&]() {
return d[1]; // { dg-error "variabl" }
}();
}