From 08b7677cf6e3a10c053dc203275a254e53f11274 Mon Sep 17 00:00:00 2001
From: Kamil Dudka <kdudka@redhat.com>
Date: Wed, 10 Mar 2010 16:49:30 +0100
Subject: [PATCH 2/2] -Wenum-mismatch now works better with conditional op.
It used to crash instead of reporting the warnings properly. Reported
by Pavel Roskin.
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
evaluate.c | 32 ++++++++++++++-
validation/enum-common.c | 15 +++++++
validation/enum-from-int.c | 63 ++++++++++++++++------------
validation/enum-mismatch.c | 100 +++++++++++++++++++++++++++-----------------
validation/enum-to-int.c | 36 ++++++++--------
5 files changed, 162 insertions(+), 84 deletions(-)
@@ -327,12 +327,42 @@ warn_for_int_to_enum_conversion (struct expression *expr, struct symbol *typeb)
}
static void
-warn_for_enum_conversions(struct expression *expr, struct symbol *type)
+do_warn_for_enum_conversions(struct expression *expr, struct symbol *type)
{
+ if (expr && expr->type == EXPR_IMPLIED_CAST)
+ /* look through the enum/int implied cast */
+ expr = expr->cast_expression;
+
+ if (!expr)
+ /* do not crash when there is nothing to check */
+ return;
+
warn_for_different_enum_types (expr, type);
warn_for_int_to_enum_conversion (expr, type);
}
+static void
+warn_for_enum_conversions(struct expression *expr, struct symbol *type)
+{
+ if (!expr || !type)
+ /* do not crash when there is nothing to check */
+ return;
+
+ switch (expr->type) {
+ case EXPR_SELECT:
+ case EXPR_CONDITIONAL:
+ do_warn_for_enum_conversions(expr->cond_true
+ /* handle the "?:" quirk */
+ ?: expr->conditional,
+ type);
+ do_warn_for_enum_conversions(expr->cond_false, type);
+ break;
+
+ default:
+ do_warn_for_enum_conversions(expr, type);
+ }
+}
+
/*
* This gets called for implicit casts in assignments and
* integer promotion. We often want to try to move the
@@ -46,6 +46,10 @@ static void always_ok(void)
default:
take_int(VALUE_C);
}
+
+ var_a = var_b ? var_a : VALUE_A;
+ var_b = VALUE_A ? VALUE_B : var_b;
+ take_enum_of_type_a(var_a ?: var_a);
}
static void trigger_enum_mismatch(void)
@@ -74,6 +78,13 @@ static void trigger_enum_mismatch(void)
var_a = VALUE_B;
var_b = VALUE_C;
anon_enum_var = VALUE_A;
+
+ // conditional operator
+ anon_enum_var = i ? VALUE_A : VALUE_B;
+ var_a = anon_enum_var ? VALUE_A : VALUE_B;
+ var_b = anon_enum_var ? VALUE_A : VALUE_B;
+ take_enum_of_type_a(var_a ?: var_b);
+ take_enum_of_type_a(var_b ?: var_a);
}
static void trigger_int_to_enum_conversion(void)
@@ -90,6 +101,10 @@ static void trigger_int_to_enum_conversion(void)
anon_enum_var = i;
var_a = (int) VALUE_A;
var_a = (int) VALUE_B;
+
+ // conditional operator
+ take_enum_of_type_a(var_a ?: i);
+ take_enum_of_type_a(i ?: var_a);
}
static void trigger_enum_to_int_conversion(void)
@@ -5,32 +5,41 @@
* check-command: sparse -Wno-enum-mismatch $file
*
* check-error-start
-enum-common.c:84:45: warning: conversion of
-enum-common.c:84:45: int to
-enum-common.c:84:45: int enum ENUM_TYPE_A
-enum-common.c:85:45: warning: conversion of
-enum-common.c:85:45: int to
-enum-common.c:85:45: int enum ENUM_TYPE_A
-enum-common.c:82:22: warning: conversion of
-enum-common.c:82:22: int to
-enum-common.c:82:22: int enum ENUM_TYPE_A
-enum-common.c:87:17: warning: conversion of
-enum-common.c:87:17: int to
-enum-common.c:87:17: int enum ENUM_TYPE_A
-enum-common.c:88:17: warning: conversion of
-enum-common.c:88:17: int to
-enum-common.c:88:17: int enum ENUM_TYPE_B
-enum-common.c:89:25: warning: conversion of
-enum-common.c:89:25: int to
-enum-common.c:89:25: int enum <noident>
-enum-common.c:90:25: warning: conversion of
-enum-common.c:90:25: int to
-enum-common.c:90:25: int enum <noident>
-enum-common.c:91:18: warning: conversion of
-enum-common.c:91:18: int to
-enum-common.c:91:18: int enum ENUM_TYPE_A
-enum-common.c:92:18: warning: conversion of
-enum-common.c:92:18: int to
-enum-common.c:92:18: int enum ENUM_TYPE_A
+enum-common.c:95:45: warning: conversion of
+enum-common.c:95:45: int to
+enum-common.c:95:45: int enum ENUM_TYPE_A
+enum-common.c:96:45: warning: conversion of
+enum-common.c:96:45: int to
+enum-common.c:96:45: int enum ENUM_TYPE_A
+enum-common.c:93:22: warning: conversion of
+enum-common.c:93:22: int to
+enum-common.c:93:22: int enum ENUM_TYPE_A
+enum-common.c:98:17: warning: conversion of
+enum-common.c:98:17: int to
+enum-common.c:98:17: int enum ENUM_TYPE_A
+enum-common.c:99:17: warning: conversion of
+enum-common.c:99:17: int to
+enum-common.c:99:17: int enum ENUM_TYPE_B
+enum-common.c:100:25: warning: conversion of
+enum-common.c:100:25: int to
+enum-common.c:100:25: int enum <noident>
+enum-common.c:101:25: warning: conversion of
+enum-common.c:101:25: int to
+enum-common.c:101:25: int enum <noident>
+enum-common.c:102:18: warning: conversion of
+enum-common.c:102:18: int to
+enum-common.c:102:18: int enum ENUM_TYPE_A
+enum-common.c:103:18: warning: conversion of
+enum-common.c:103:18: int to
+enum-common.c:103:18: int enum ENUM_TYPE_A
+enum-common.c:106:38: warning: conversion of
+enum-common.c:106:38: int to
+enum-common.c:106:38: int enum ENUM_TYPE_A
+enum-common.c:107:29: warning: conversion of
+enum-common.c:107:29: int to
+enum-common.c:107:29: int enum ENUM_TYPE_A
+enum-common.c:107:29: warning: conversion of
+enum-common.c:107:29: int to
+enum-common.c:107:29: int enum ENUM_TYPE_A
* check-error-end
*/
@@ -5,44 +5,68 @@
* check-command: sparse -Wenum-mismatch -Wno-int-to-enum $file
*
* check-error-start
-enum-common.c:57:45: warning: mixing different enum types
-enum-common.c:57:45: int enum ENUM_TYPE_B versus
-enum-common.c:57:45: int enum ENUM_TYPE_A
-enum-common.c:58:45: warning: mixing different enum types
-enum-common.c:58:45: int enum ENUM_TYPE_B versus
-enum-common.c:58:45: int enum ENUM_TYPE_A
-enum-common.c:54:22: warning: mixing different enum types
-enum-common.c:54:22: int enum ENUM_TYPE_B versus
-enum-common.c:54:22: int enum ENUM_TYPE_A
-enum-common.c:55:22: warning: mixing different enum types
-enum-common.c:55:22: int enum <noident> versus
-enum-common.c:55:22: int enum ENUM_TYPE_A
-enum-common.c:64:45: warning: mixing different enum types
-enum-common.c:64:45: int enum <noident> versus
-enum-common.c:64:45: int enum ENUM_TYPE_A
-enum-common.c:65:45: warning: mixing different enum types
-enum-common.c:65:45: int enum <noident> versus
-enum-common.c:65:45: int enum ENUM_TYPE_A
-enum-common.c:62:22: warning: mixing different enum types
-enum-common.c:62:22: int enum ENUM_TYPE_A versus
-enum-common.c:62:22: int enum <noident>
-enum-common.c:69:17: warning: mixing different enum types
-enum-common.c:69:17: int enum ENUM_TYPE_B versus
-enum-common.c:69:17: int enum ENUM_TYPE_A
-enum-common.c:70:17: warning: mixing different enum types
-enum-common.c:70:17: int enum <noident> versus
-enum-common.c:70:17: int enum ENUM_TYPE_B
-enum-common.c:71:25: warning: mixing different enum types
-enum-common.c:71:25: int enum ENUM_TYPE_A versus
-enum-common.c:71:25: int enum <noident>
+enum-common.c:61:45: warning: mixing different enum types
+enum-common.c:61:45: int enum ENUM_TYPE_B versus
+enum-common.c:61:45: int enum ENUM_TYPE_A
+enum-common.c:62:45: warning: mixing different enum types
+enum-common.c:62:45: int enum ENUM_TYPE_B versus
+enum-common.c:62:45: int enum ENUM_TYPE_A
+enum-common.c:58:22: warning: mixing different enum types
+enum-common.c:58:22: int enum ENUM_TYPE_B versus
+enum-common.c:58:22: int enum ENUM_TYPE_A
+enum-common.c:59:22: warning: mixing different enum types
+enum-common.c:59:22: int enum <noident> versus
+enum-common.c:59:22: int enum ENUM_TYPE_A
+enum-common.c:68:45: warning: mixing different enum types
+enum-common.c:68:45: int enum <noident> versus
+enum-common.c:68:45: int enum ENUM_TYPE_A
+enum-common.c:69:45: warning: mixing different enum types
+enum-common.c:69:45: int enum <noident> versus
+enum-common.c:69:45: int enum ENUM_TYPE_A
+enum-common.c:66:22: warning: mixing different enum types
+enum-common.c:66:22: int enum ENUM_TYPE_A versus
+enum-common.c:66:22: int enum <noident>
+enum-common.c:73:17: warning: mixing different enum types
+enum-common.c:73:17: int enum ENUM_TYPE_B versus
+enum-common.c:73:17: int enum ENUM_TYPE_A
enum-common.c:74:17: warning: mixing different enum types
-enum-common.c:74:17: int enum ENUM_TYPE_B versus
-enum-common.c:74:17: int enum ENUM_TYPE_A
-enum-common.c:75:17: warning: mixing different enum types
-enum-common.c:75:17: int enum <noident> versus
-enum-common.c:75:17: int enum ENUM_TYPE_B
-enum-common.c:76:25: warning: mixing different enum types
-enum-common.c:76:25: int enum ENUM_TYPE_A versus
-enum-common.c:76:25: int enum <noident>
+enum-common.c:74:17: int enum <noident> versus
+enum-common.c:74:17: int enum ENUM_TYPE_B
+enum-common.c:75:25: warning: mixing different enum types
+enum-common.c:75:25: int enum ENUM_TYPE_A versus
+enum-common.c:75:25: int enum <noident>
+enum-common.c:78:17: warning: mixing different enum types
+enum-common.c:78:17: int enum ENUM_TYPE_B versus
+enum-common.c:78:17: int enum ENUM_TYPE_A
+enum-common.c:79:17: warning: mixing different enum types
+enum-common.c:79:17: int enum <noident> versus
+enum-common.c:79:17: int enum ENUM_TYPE_B
+enum-common.c:80:25: warning: mixing different enum types
+enum-common.c:80:25: int enum ENUM_TYPE_A versus
+enum-common.c:80:25: int enum <noident>
+enum-common.c:83:29: warning: mixing different enum types
+enum-common.c:83:29: int enum ENUM_TYPE_A versus
+enum-common.c:83:29: int enum <noident>
+enum-common.c:83:39: warning: mixing different enum types
+enum-common.c:83:39: int enum ENUM_TYPE_B versus
+enum-common.c:83:39: int enum <noident>
+enum-common.c:84:43: warning: mixing different enum types
+enum-common.c:84:43: int enum ENUM_TYPE_B versus
+enum-common.c:84:43: int enum ENUM_TYPE_A
+enum-common.c:85:33: warning: mixing different enum types
+enum-common.c:85:33: int enum ENUM_TYPE_A versus
+enum-common.c:85:33: int enum ENUM_TYPE_B
+enum-common.c:86:29: warning: mixing different enum types
+enum-common.c:86:29: int enum ENUM_TYPE_A versus
+enum-common.c:86:29: int enum ENUM_TYPE_B
+enum-common.c:86:38: warning: mixing different enum types
+enum-common.c:86:38: int enum ENUM_TYPE_B versus
+enum-common.c:86:38: int enum ENUM_TYPE_A
+enum-common.c:87:29: warning: mixing different enum types
+enum-common.c:87:29: int enum ENUM_TYPE_B versus
+enum-common.c:87:29: int enum ENUM_TYPE_A
+enum-common.c:87:29: warning: mixing different enum types
+enum-common.c:87:29: int enum ENUM_TYPE_B versus
+enum-common.c:87:29: int enum ENUM_TYPE_A
* check-error-end
*/
@@ -5,23 +5,23 @@
* check-command: sparse -Wenum-to-int -Wno-enum-mismatch -Wno-int-to-enum $file
*
* check-error-start
-enum-common.c:97:13: warning: conversion of
-enum-common.c:97:13: int enum ENUM_TYPE_A to
-enum-common.c:97:13: int
-enum-common.c:98:13: warning: conversion of
-enum-common.c:98:13: int enum ENUM_TYPE_B to
-enum-common.c:98:13: int
-enum-common.c:103:34: warning: conversion of
-enum-common.c:103:34: int enum ENUM_TYPE_A to
-enum-common.c:103:34: int
-enum-common.c:104:34: warning: conversion of
-enum-common.c:104:34: int enum ENUM_TYPE_B to
-enum-common.c:104:34: int
-enum-common.c:100:22: warning: conversion of
-enum-common.c:100:22: int enum ENUM_TYPE_A to
-enum-common.c:100:22: int
-enum-common.c:101:22: warning: conversion of
-enum-common.c:101:22: int enum ENUM_TYPE_B to
-enum-common.c:101:22: int
+enum-common.c:112:13: warning: conversion of
+enum-common.c:112:13: int enum ENUM_TYPE_A to
+enum-common.c:112:13: int
+enum-common.c:113:13: warning: conversion of
+enum-common.c:113:13: int enum ENUM_TYPE_B to
+enum-common.c:113:13: int
+enum-common.c:118:34: warning: conversion of
+enum-common.c:118:34: int enum ENUM_TYPE_A to
+enum-common.c:118:34: int
+enum-common.c:119:34: warning: conversion of
+enum-common.c:119:34: int enum ENUM_TYPE_B to
+enum-common.c:119:34: int
+enum-common.c:115:22: warning: conversion of
+enum-common.c:115:22: int enum ENUM_TYPE_A to
+enum-common.c:115:22: int
+enum-common.c:116:22: warning: conversion of
+enum-common.c:116:22: int enum ENUM_TYPE_B to
+enum-common.c:116:22: int
* check-error-end
*/
--
1.6.6.1