diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2016-07-02 08:41:29 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2016-07-02 08:41:29 +0200 |
| commit | 557e8c49cf47555401cf07c020ebdf6ddd4296b5 (patch) | |
| tree | 8613a51002d3befa50a1a23aaf8eeee136366785 /gcc | |
| parent | 547ef7ded59554fcf8fb59dab0769e9c0004c696 (diff) | |
| download | gcc-557e8c49cf47555401cf07c020ebdf6ddd4296b5.zip gcc-557e8c49cf47555401cf07c020ebdf6ddd4296b5.tar.gz gcc-557e8c49cf47555401cf07c020ebdf6ddd4296b5.tar.bz2 | |
re PR c/71719 (invalid set-but-not-used warning with vectors)
PR c/71719
* c-typeck.c (mark_exp_read): Handle VIEW_CONVERT_EXPR.
* c-c++-common/Wunused-var-15.c: New test.
From-SVN: r237937
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/c/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/c/c-typeck.c | 1 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/c-c++-common/Wunused-var-15.c | 20 |
4 files changed, 31 insertions, 0 deletions
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog index 7bd112b..41d3547 100644 --- a/gcc/c/ChangeLog +++ b/gcc/c/ChangeLog @@ -1,3 +1,8 @@ +2016-07-02 Jakub Jelinek <jakub@redhat.com> + + PR c/71719 + * c-typeck.c (mark_exp_read): Handle VIEW_CONVERT_EXPR. + 2016-06-29 Thomas Schwinge <thomas@codesourcery.com> * c-parser.c (c_parser_pragma) <PRAGMA_OMP_CANCELLATION_POINT>: diff --git a/gcc/c/c-typeck.c b/gcc/c/c-typeck.c index b2435de..bafd0d2 100644 --- a/gcc/c/c-typeck.c +++ b/gcc/c/c-typeck.c @@ -1896,6 +1896,7 @@ mark_exp_read (tree exp) case IMAGPART_EXPR: CASE_CONVERT: case ADDR_EXPR: + case VIEW_CONVERT_EXPR: mark_exp_read (TREE_OPERAND (exp, 0)); break; case COMPOUND_EXPR: diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 08db9d1..ced6ca7 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-07-02 Jakub Jelinek <jakub@redhat.com> + + PR c/71719 + * c-c++-common/Wunused-var-15.c: New test. + 2016-07-01 Jakub Jelinek <jakub@redhat.com> PR fortran/71687 diff --git a/gcc/testsuite/c-c++-common/Wunused-var-15.c b/gcc/testsuite/c-c++-common/Wunused-var-15.c new file mode 100644 index 0000000..b0f680a --- /dev/null +++ b/gcc/testsuite/c-c++-common/Wunused-var-15.c @@ -0,0 +1,20 @@ +/* PR c/71719 */ +/* { dg-do compile } */ +/* { dg-options "-Wunused -W -Wno-psabi" } */ + +typedef unsigned V __attribute__ ((vector_size (16))); + +void bar (unsigned); + +V x; + +void +foo (V v) /* { dg-bogus "set but not used" } */ +{ + bar (v[0]); + V w = x; /* { dg-bogus "set but not used" } */ + bar (w[1]); +} + +/* Ignore a warning that is irrelevant to the purpose of this test. */ +/* { dg-prune-output ".*GCC vector passed by reference.*" } */ |