/* $NetBSD: msg_135.c,v 1.11 2022/07/16 22:36:06 rillig Exp $ */ # 3 "msg_135.c" // Test for message: converting '%s' to '%s' increases alignment from %u to %u [135] /* lint1-extra-flags: -h */ void sink(const void *); unsigned read_uint(const unsigned short **pp) { unsigned val; /* expect+1: warning: converting 'pointer to const unsigned short' to 'pointer to const unsigned int' increases alignment from 2 to 4 [135] */ val = *(const unsigned *)(*pp); pp += sizeof(unsigned); return val; } /* expect+1: warning: struct 'incomplete' never defined [233] */ struct incomplete; struct complete { int member; }; /* * These types of conversions are typically seen in OpenSSL, when converting * from the publicly visible, incomplete 'struct lhash_st' to a private * implementation type such as 'struct lhash_st_OPENSSL_STRING'. * * Before tree.c 1.277 from 2021-04-17, lint warned about this, even though * there was not enough evidence that there really was an alignment problem, * resulting in many false positives. * * See openssl/lhash.h. */ void pointer_to_structs(struct incomplete *incomplete) { struct complete *complete; complete = (struct complete *)incomplete; sink(complete); } /* * Before tree.c 1.316 from 2021-07-15, lint warned about pointer casts from * unsigned char or plain char to another type. These casts often occur in * traditional code that does not use void pointers, even 30 years after C90 * introduced 'void'. */ void unsigned_char_to_unsigned_type(unsigned char *ucp) { unsigned short *usp; usp = (unsigned short *)ucp; sink(usp); } /* * Before tree.c 1.316 from 2021-07-15, lint warned about pointer casts from * unsigned char or plain char to another type. These casts often occur in * traditional code that does not use void pointers, even 30 years after C90 * introduced 'void'. */ void plain_char_to_unsigned_type(char *cp) { unsigned short *usp; usp = (unsigned short *)cp; sink(usp); }