diff options
Diffstat (limited to 'tools/perf/util/expr.y')
| -rw-r--r-- | tools/perf/util/expr.y | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y index 635e562350c5c..4ce931cccb633 100644 --- a/tools/perf/util/expr.y +++ b/tools/perf/util/expr.y @@ -127,7 +127,11 @@ static struct ids handle_id(struct expr_parse_ctx *ctx, char *id, if (!compute_ids || (is_const(LHS.val) && is_const(RHS.val))) { \ assert(LHS.ids == NULL); \ assert(RHS.ids == NULL); \ - RESULT.val = (long)LHS.val OP (long)RHS.val; \ + if (isnan(LHS.val) || isnan(RHS.val)) { \ + RESULT.val = NAN; \ + } else { \ + RESULT.val = (long)LHS.val OP (long)RHS.val; \ + } \ RESULT.ids = NULL; \ } else { \ RESULT = union_expr(LHS, RHS); \ @@ -137,7 +141,11 @@ static struct ids handle_id(struct expr_parse_ctx *ctx, char *id, if (!compute_ids || (is_const(LHS.val) && is_const(RHS.val))) { \ assert(LHS.ids == NULL); \ assert(RHS.ids == NULL); \ - RESULT.val = LHS.val OP RHS.val; \ + if (isnan(LHS.val) || isnan(RHS.val)) { \ + RESULT.val = NAN; \ + } else { \ + RESULT.val = LHS.val OP RHS.val; \ + } \ RESULT.ids = NULL; \ } else { \ RESULT = union_expr(LHS, RHS); \ @@ -217,7 +225,11 @@ expr: NUMBER { if (fpclassify($3.val) == FP_ZERO) { pr_debug("division by zero\n"); - YYABORT; + assert($3.ids == NULL); + if (compute_ids) + ids__free($1.ids); + $$.val = NAN; + $$.ids = NULL; } else if (!compute_ids || (is_const($1.val) && is_const($3.val))) { assert($1.ids == NULL); assert($3.ids == NULL); |