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author | Carlo Zancanaro <carlo@pc-4w14-0.cs.usyd.edu.au> | 2012-10-15 17:10:06 +1100 |
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committer | Carlo Zancanaro <carlo@pc-4w14-0.cs.usyd.edu.au> | 2012-10-15 17:10:06 +1100 |
commit | be1de4be954c80875ad4108e0a33e8e131b2f2c0 (patch) | |
tree | 1fbbecf276bf7c7bdcbb4dd446099d6d90eaa516 /clang/test/SemaCXX/warn-cast-align.cpp | |
parent | c4626a62754862d20b41e8a46a3574264ea80e6d (diff) | |
parent | f1bd2e48c5324d3f7cda4090c87f8a5b6f463ce2 (diff) |
Merge branch 'master' of ssh://bitbucket.org/czan/honours
Diffstat (limited to 'clang/test/SemaCXX/warn-cast-align.cpp')
-rw-r--r-- | clang/test/SemaCXX/warn-cast-align.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/warn-cast-align.cpp b/clang/test/SemaCXX/warn-cast-align.cpp new file mode 100644 index 0000000..68acbdd --- /dev/null +++ b/clang/test/SemaCXX/warn-cast-align.cpp @@ -0,0 +1,45 @@ +// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -Wcast-align -verify %s + +// Simple casts. +void test0(char *P) { + char *a; short *b; int *c; + + a = (char*) P; + a = static_cast<char*>(P); + a = reinterpret_cast<char*>(P); + typedef char *CharPtr; + a = CharPtr(P); + + b = (short*) P; // expected-warning {{cast from 'char *' to 'short *' increases required alignment from 1 to 2}} + b = reinterpret_cast<short*>(P); + typedef short *ShortPtr; + b = ShortPtr(P); // expected-warning {{cast from 'char *' to 'ShortPtr' (aka 'short *') increases required alignment from 1 to 2}} + + c = (int*) P; // expected-warning {{cast from 'char *' to 'int *' increases required alignment from 1 to 4}} + c = reinterpret_cast<int*>(P); + typedef int *IntPtr; + c = IntPtr(P); // expected-warning {{cast from 'char *' to 'IntPtr' (aka 'int *') increases required alignment from 1 to 4}} +} + +// Casts from void* are a special case. +void test1(void *P) { + char *a; short *b; int *c; + + a = (char*) P; + a = static_cast<char*>(P); + a = reinterpret_cast<char*>(P); + typedef char *CharPtr; + a = CharPtr(P); + + b = (short*) P; + b = static_cast<short*>(P); + b = reinterpret_cast<short*>(P); + typedef short *ShortPtr; + b = ShortPtr(P); + + c = (int*) P; + c = static_cast<int*>(P); + c = reinterpret_cast<int*>(P); + typedef int *IntPtr; + c = IntPtr(P); +} |