diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ada/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/ada/gcc-interface/decl.c | 8 |
2 files changed, 13 insertions, 0 deletions
diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog index f896d14..b3ac97c 100644 --- a/gcc/ada/ChangeLog +++ b/gcc/ada/ChangeLog @@ -1,5 +1,10 @@ 2016-11-13 Eric Botcazou <ebotcazou@adacore.com> + * gcc-interface/decl.c (annotate_value) <INTEGER_CST>: Deal specially + with negative constants. + +2016-11-13 Eric Botcazou <ebotcazou@adacore.com> + * gcc-interface/utils2.c (gnat_protect_expr): Also protect only the address if the expression is the component of a dereference. Do not use a reference type for the final temporary reference. diff --git a/gcc/ada/gcc-interface/decl.c b/gcc/ada/gcc-interface/decl.c index 3aaaaca..b6fce3e 100644 --- a/gcc/ada/gcc-interface/decl.c +++ b/gcc/ada/gcc-interface/decl.c @@ -8022,6 +8022,14 @@ annotate_value (tree gnu_size) switch (TREE_CODE (gnu_size)) { case INTEGER_CST: + /* For negative values, build NEGATE_EXPR of the opposite. Such values + can appear for discriminants in expressions for variants. */ + if (tree_int_cst_sgn (gnu_size) < 0) + { + tree t = wide_int_to_tree (sizetype, wi::neg (gnu_size)); + return annotate_value (build1 (NEGATE_EXPR, sizetype, t)); + } + return TREE_OVERFLOW (gnu_size) ? No_Uint : UI_From_gnu (gnu_size); case COMPONENT_REF: |