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| author | Jason Merrill <jason@redhat.com> | 2022-03-21 17:48:01 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@redhat.com> | 2022-03-21 18:25:17 -0400 |
| commit | c65bd532e225996cc9c5b75355d2cb648d0bcfc5 (patch) | |
| tree | 6fa70dfbc62338859e38abc9881745ffa5d063a5 /gcc | |
| parent | bec69ac548b0f37b41d07082d6ee52b52d356536 (diff) | |
| download | gcc-c65bd532e225996cc9c5b75355d2cb648d0bcfc5.zip gcc-c65bd532e225996cc9c5b75355d2cb648d0bcfc5.tar.gz gcc-c65bd532e225996cc9c5b75355d2cb648d0bcfc5.tar.bz2 | |
c++: initialized array of vla [PR58646]
We went into build_vec_init because we're dealing with a VLA, but then
build_vec_init thought it was safe to just build an INIT_EXPR because the
outer dimension is constant. Nope.
PR c++/58646
gcc/cp/ChangeLog:
* init.cc (build_vec_init): Check for vla element type.
gcc/testsuite/ChangeLog:
* g++.dg/ext/vla24.C: New test.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cp/init.cc | 1 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/ext/vla24.C | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/gcc/cp/init.cc b/gcc/cp/init.cc index 7575597..0876767 100644 --- a/gcc/cp/init.cc +++ b/gcc/cp/init.cc @@ -4395,6 +4395,7 @@ build_vec_init (tree base, tree maxindex, tree init, if (init && TREE_CODE (atype) == ARRAY_TYPE && TREE_CONSTANT (maxindex) + && !vla_type_p (type) && (from_array == 2 ? vec_copy_assign_is_trivial (inner_elt_type, init) : !TYPE_NEEDS_CONSTRUCTING (type)) diff --git a/gcc/testsuite/g++.dg/ext/vla24.C b/gcc/testsuite/g++.dg/ext/vla24.C new file mode 100644 index 0000000..0a99c00 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/vla24.C @@ -0,0 +1,7 @@ +// PR c++/58646 +// { dg-additional-options -Wno-vla } + +void foo(int n) +{ + int a[2][n] = {}; +} |