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| author | Jason Merrill <jason@redhat.com> | 2018-02-26 16:55:41 -0500 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2018-02-26 16:55:41 -0500 |
| commit | 8e9589bd6b308700c8601e802739b4d8f4d4cb83 (patch) | |
| tree | 221d0a1df6f0596235c100891a574f8c302ef2a2 | |
| parent | c2236b9b79e38e853026ac236984fcb5eabfb5df (diff) | |
| download | gcc-8e9589bd6b308700c8601e802739b4d8f4d4cb83.zip gcc-8e9589bd6b308700c8601e802739b4d8f4d4cb83.tar.gz gcc-8e9589bd6b308700c8601e802739b4d8f4d4cb83.tar.bz2 | |
PR c++/84559 - ICE with constexpr VLA.
* constexpr.c (ensure_literal_type_for_constexpr_object): Check
for constexpr variable with VLA type.
From-SVN: r258015
| -rw-r--r-- | gcc/cp/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/cp/constexpr.c | 7 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/ext/constexpr-vla5.C | 7 |
3 files changed, 20 insertions, 0 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index 14f899c..3a2a17d 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,3 +1,9 @@ +2018-02-26 Jason Merrill <jason@redhat.com> + + PR c++/84559 - ICE with constexpr VLA. + * constexpr.c (ensure_literal_type_for_constexpr_object): Check + for constexpr variable with VLA type. + 2018-02-26 Jakub Jelinek <jakub@redhat.com> PR c++/84558 diff --git a/gcc/cp/constexpr.c b/gcc/cp/constexpr.c index b3de62a..4bbdbf4 100644 --- a/gcc/cp/constexpr.c +++ b/gcc/cp/constexpr.c @@ -112,6 +112,13 @@ ensure_literal_type_for_constexpr_object (tree decl) cp_function_chain->invalid_constexpr = true; } } + else if (DECL_DECLARED_CONSTEXPR_P (decl) + && variably_modified_type_p (type, NULL_TREE)) + { + error ("%<constexpr%> variable %qD has variably-modified type %qT", + decl, type); + decl = error_mark_node; + } } return decl; } diff --git a/gcc/testsuite/g++.dg/ext/constexpr-vla5.C b/gcc/testsuite/g++.dg/ext/constexpr-vla5.C new file mode 100644 index 0000000..565d40a --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/constexpr-vla5.C @@ -0,0 +1,7 @@ +// PR c++/84559 +// { dg-do compile { target c++11 } } + +void foo(int i) +{ + constexpr char x[i] = ""; // { dg-error "" } +} |