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| author | Marek Polacek <polacek@redhat.com> | 2015-12-15 15:13:49 +0000 |
|---|---|---|
| committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2015-12-15 15:13:49 +0000 |
| commit | 2994fb91b7df8f8a0c0f83024c240f25f78f25a0 (patch) | |
| tree | 4754cc1722a0b8dfa443bdb17e5fb5e5f5efc61d | |
| parent | 4a38b02b4ed0b6d58e1773072daff795eb244829 (diff) | |
| download | gcc-2994fb91b7df8f8a0c0f83024c240f25f78f25a0.zip gcc-2994fb91b7df8f8a0c0f83024c240f25f78f25a0.tar.gz gcc-2994fb91b7df8f8a0c0f83024c240f25f78f25a0.tar.bz2 | |
re PR c/68907 (bogus warning: right-hand operand of comma expression has no effect on an atomic_int preincrement)
PR c/68907
* c-typeck.c (build_atomic_assign): Set TREE_NO_WARNING on an
artificial decl.
* gcc.dg/pr68907.c: New test.
From-SVN: r231656
| -rw-r--r-- | gcc/c/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/c/c-typeck.c | 1 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr68907.c | 14 |
4 files changed, 26 insertions, 0 deletions
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog index 2ba9464..e61a2ed 100644 --- a/gcc/c/ChangeLog +++ b/gcc/c/ChangeLog @@ -1,3 +1,9 @@ +2015-12-15 Marek Polacek <polacek@redhat.com> + + PR c/68907 + * c-typeck.c (build_atomic_assign): Set TREE_NO_WARNING on an + artificial decl. + 2015-12-08 David Malcolm <dmalcolm@redhat.com> * c-parser.c (c_parser_alignof_expression): Capture location of diff --git a/gcc/c/c-typeck.c b/gcc/c/c-typeck.c index b691072..9d6c604 100644 --- a/gcc/c/c-typeck.c +++ b/gcc/c/c-typeck.c @@ -3814,6 +3814,7 @@ build_atomic_assign (location_t loc, tree lhs, enum tree_code modifycode, newval = create_tmp_var_raw (nonatomic_lhs_type); newval_addr = build_unary_op (loc, ADDR_EXPR, newval, 0); TREE_ADDRESSABLE (newval) = 1; + TREE_NO_WARNING (newval) = 1; loop_decl = create_artificial_label (loc); loop_label = build1 (LABEL_EXPR, void_type_node, loop_decl); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 633f8b2..17c1b66 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2015-12-15 Marek Polacek <polacek@redhat.com> + + PR c/68907 + * gcc.dg/pr68907.c: New test. + 2015-12-15 Alessandro Fanfarillo <fanfarillo.gcc@gmail.com> * gfortran.dg/coarray_critical_1.f90: New. diff --git a/gcc/testsuite/gcc.dg/pr68907.c b/gcc/testsuite/gcc.dg/pr68907.c new file mode 100644 index 0000000..de1c237 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr68907.c @@ -0,0 +1,14 @@ +/* PR c/60195 */ +/* { dg-do compile } */ +/* { dg-options "-std=c11 -Wpedantic -Wall" } */ + +_Atomic int a; + +void +fn (void) +{ + ++a; + a++; + --a; + a--; +} |