From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/Sema/warn-cast-align.c | 41 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 clang/test/Sema/warn-cast-align.c (limited to 'clang/test/Sema/warn-cast-align.c') diff --git a/clang/test/Sema/warn-cast-align.c b/clang/test/Sema/warn-cast-align.c new file mode 100644 index 0000000..9d64699 --- /dev/null +++ b/clang/test/Sema/warn-cast-align.c @@ -0,0 +1,41 @@ +// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -Wcast-align -verify %s + +// Simple casts. +void test0(char *P) { + char *a = (char*) P; + short *b = (short*) P; // expected-warning {{cast from 'char *' to 'short *' increases required alignment from 1 to 2}} + int *c = (int*) P; // expected-warning {{cast from 'char *' to 'int *' increases required alignment from 1 to 4}} +} + +// Casts from void* are a special case. +void test1(void *P) { + char *a = (char*) P; + short *b = (short*) P; + int *c = (int*) P; + + const volatile void *P2 = P; + char *d = (char*) P2; + short *e = (short*) P2; + int *f = (int*) P2; + + const char *g = (const char*) P2; + const short *h = (const short*) P2; + const int *i = (const int*) P2; + + const volatile char *j = (const volatile char*) P2; + const volatile short *k = (const volatile short*) P2; + const volatile int *l = (const volatile int*) P2; +} + +// Aligned struct. +struct __attribute__((aligned(16))) A { + char buffer[16]; +}; +void test2(char *P) { + struct A *a = (struct A*) P; // expected-warning {{cast from 'char *' to 'struct A *' increases required alignment from 1 to 16}} +} + +// Incomplete type. +void test3(char *P) { + struct B *b = (struct B*) P; +} -- cgit v1.2.3