mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-26 14:36:08 +00:00
a5c25c5d46
A buildbot got angry about this new test, with error messages like: warn-nullchar-nullptr.c Line 16: use of undeclared identifier 'u' It looks like this `u'c'` syntax was introduced in C11; I'm guessing some bots may default to something before that. Let's see if explicitly specifying the standard version makes it happy... llvm-svn: 367947
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify -Wall %s -std=c11
|
|
|
|
int test1(int *a) {
|
|
return a == '\0'; // expected-warning {{comparing a pointer to a null character constant; did you mean to compare to (void *)0?}}
|
|
}
|
|
|
|
int test2(int *a) {
|
|
return '\0' == a; // expected-warning {{comparing a pointer to a null character constant; did you mean to compare to (void *)0?}}
|
|
}
|
|
|
|
int test3(int *a) {
|
|
return a == L'\0'; // expected-warning {{comparing a pointer to a null character constant; did you mean to compare to (void *)0?}}
|
|
}
|
|
|
|
int test4(int *a) {
|
|
return a == u'\0'; // expected-warning {{comparing a pointer to a null character constant; did you mean to compare to (void *)0?}}
|
|
}
|
|
|
|
int test5(int *a) {
|
|
return a == U'\0'; // expected-warning {{comparing a pointer to a null character constant; did you mean to compare to (void *)0?}}
|
|
}
|
|
|
|
int test6(int *a) {
|
|
return a == (char)0; // expected-warning {{comparing a pointer to a null character constant; did you mean to compare to (void *)0?}}
|
|
}
|
|
|
|
typedef char my_char;
|
|
int test7(int *a) {
|
|
return a == (my_char)0;
|
|
// expected-warning@-1 {{comparing a pointer to a null character constant; did you mean to compare to (void *)0?}}
|
|
}
|
|
|
|
int test8(int *a) {
|
|
return a != '\0'; // expected-warning {{comparing a pointer to a null character constant; did you mean to compare to (void *)0?}}
|
|
}
|
|
|
|
#define NULL (void *)0
|
|
int test9(int *a) {
|
|
return a == '\0'; // expected-warning {{comparing a pointer to a null character constant; did you mean to compare to NULL?}}
|
|
}
|
|
|
|
#define MYCHAR char
|
|
int test10(int *a) {
|
|
return a == (MYCHAR)0; // expected-warning {{comparing a pointer to a null character constant; did you mean to compare to NULL?}}
|
|
}
|
|
|
|
int test11(int *a) {
|
|
return a > '\0';
|
|
}
|