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[PR c++/87185] ICE in prune-lambdas

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https://gcc.gnu.org/ml/gcc-patches/2018-09/msg00249.html
	cp/
	PR c++/87185
	* lambda.c (prune_lambda_captures): Protect against const_vars.get
	returning NULL.
	testsuite/
	PR c++/87185
	* g++.dg/pr87185.C: New.

From-SVN: r264118
This commit is contained in:
Pádraig Brady 2018-09-05 09:59:08 +00:00 committed by Nathan Sidwell
parent 888157af3e
commit 86e95f35c5
4 changed files with 18 additions and 3 deletions
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6
gcc/cp/ChangeLog
View File

@ -1,3 +1,9 @@
2018-09-05 Pádraig Brady p@draigbrady.com
PR c++/87185
* lambda.c (prune_lambda_captures): Protect against const_vars.get
returning NULL.
2018-09-04 Marek Polacek <polacek@redhat.com>
* cp-tree.h (treat_lvalue_as_rvalue_p): Declare.

6
gcc/cp/lambda.c
View File

@ -1519,8 +1519,8 @@ prune_lambda_captures (tree body)
tree cap = *capp;
if (tree var = var_to_maybe_prune (cap))
{
tree *use = *const_vars.get (var);
if (TREE_CODE (*use) == DECL_EXPR)
tree **use = const_vars.get (var);
if (use && TREE_CODE (**use) == DECL_EXPR)
{
/* All uses of this capture were folded away, leaving only the
proxy declaration. */
@ -1535,7 +1535,7 @@ prune_lambda_captures (tree body)
*fieldp = DECL_CHAIN (*fieldp);
/* And remove the capture proxy declaration. */
*use = void_node;
**use = void_node;
continue;
}
}

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2018-09-05 Pádraig Brady p@draigbrady.com
PR c++/87185
* g++.dg/pr87185.C: New.
2018-09-05 Martin Liska <mliska@suse.cz>
PR testsuite/87216

4
gcc/testsuite/g++.dg/pr87185.C Normal file
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@ -0,0 +1,4 @@
// PR c++/87185
// { dg-do compile { target c++11 } }
void f() { const int i=0; [&]() noexcept {i;}; }