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Diffstat (limited to 'gcc/ada/gcc-interface/decl.c')
| -rw-r--r-- | gcc/ada/gcc-interface/decl.c | 8 |
1 files changed, 8 insertions, 0 deletions
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: |