Source-Changes-HG archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
[src/trunk]: src/tests/usr.bin/xlint/lint1 tests/lint: add test case for inte...
details: https://anonhg.NetBSD.org/src/rev/2887872126fe
branches: trunk
changeset: 365711:2887872126fe
user: rillig <rillig%NetBSD.org@localhost>
date: Tue Apr 19 22:40:13 2022 +0000
description:
tests/lint: add test case for integer non-constant expression
Seen in sqlite3.c.
diffstat:
tests/usr.bin/xlint/lint1/msg_132.c | 17 ++++++++++++++++-
tests/usr.bin/xlint/lint1/msg_132.exp | 1 +
2 files changed, 17 insertions(+), 1 deletions(-)
diffs (36 lines):
diff -r 390d4369385b -r 2887872126fe tests/usr.bin/xlint/lint1/msg_132.c
--- a/tests/usr.bin/xlint/lint1/msg_132.c Tue Apr 19 22:26:57 2022 +0000
+++ b/tests/usr.bin/xlint/lint1/msg_132.c Tue Apr 19 22:40:13 2022 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: msg_132.c,v 1.6 2021/08/25 22:04:52 rillig Exp $ */
+/* $NetBSD: msg_132.c,v 1.7 2022/04/19 22:40:13 rillig Exp $ */
# 3 "msg_132.c"
// Test for message: conversion from '%s' to '%s' may lose accuracy [132]
@@ -85,3 +85,18 @@
return arr + idx;
return arr + (unsigned int)idx;
}
+
+int
+non_constant_expression(void)
+{
+ /*
+ * Even though this variable definition looks like a constant, it
+ * does not fall within C's definition of an integer constant
+ * expression. Due to that, lint does not perform constant folding
+ * on the expression built from this variable and thus doesn't know
+ * that the conversion will always succeed.
+ */
+ const int not_a_constant = 8;
+ /* expect+1: warning: conversion from 'unsigned long' to 'int' may lose accuracy [132] */
+ return sizeof(double) + not_a_constant * sizeof(char *);
+}
diff -r 390d4369385b -r 2887872126fe tests/usr.bin/xlint/lint1/msg_132.exp
--- a/tests/usr.bin/xlint/lint1/msg_132.exp Tue Apr 19 22:26:57 2022 +0000
+++ b/tests/usr.bin/xlint/lint1/msg_132.exp Tue Apr 19 22:40:13 2022 +0000
@@ -12,3 +12,4 @@
msg_132.c(59): warning: conversion from 'long long' to 'int' may lose accuracy [132]
msg_132.c(85): error: operands of '+' have incompatible types (pointer != double) [107]
msg_132.c(85): warning: function 'cover_build_plus_minus' expects to return value [214]
+msg_132.c(101): warning: conversion from 'unsigned long' to 'int' may lose accuracy [132]
Home |
Main Index |
Thread Index |
Old Index