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tests/lint: add another test for aligned struct member 

In the kernel, several structs have this attribute, and running lint on
them runs into a compile-time assertion.  Typical error messages are:

* error: illegal bit-field size: 255 [36]
* error: integral constant expression expected [55]
This commit is contained in:
rillig 2022-08-27 21:59:41 +00:00
parent a611fd1e16
commit 68d3211991
1 changed files with 15 additions and 1 deletions
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16
tests/usr.bin/xlint/lint1/gcc_attribute_aligned.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: gcc_attribute_aligned.c,v 1.3 2022/06/17 18:54:53 rillig Exp $ */
/* $NetBSD: gcc_attribute_aligned.c,v 1.4 2022/08/27 21:59:41 rillig Exp $ */
# 3 "gcc_attribute_aligned.c"
/*
@ -43,3 +43,17 @@ struct {
/* expect+1: error: illegal bit-field size: 255 [36] */
unsigned int sizeof_save87: sizeof(struct save87) == 108 ? 1 : -1;
};
void
aligned_struct_member(void)
{
struct aligned {
int first;
int second __attribute__((__aligned__(16)));
};
/* TODO: should be -20 instead of -8. */
/* expect+1: error: negative array dimension (-8) [20] */
typedef int ctassert[-(int)sizeof(struct aligned)];
}