hanchenye-llvm-project/clang/test/SemaObjC/warn-write-strings.m

// RUN: %clang_cc1 -verify -fsyntax-only -fconst-strings %s

// PR4804
char* x = "foo"; // expected-warning {{initializing 'char *' with an expression of type 'const char [4]' discards qualifiers}}
There were some frustrating problems with the implementation of -Wwrite-strings. First and foremost, once the positive form of the flag was passed, it could never be disabled by passing -Wno-write-strings. Also, the diagnostic engine couldn't in turn use -Wwrite-strings to control diagnostics (as GCC does) because it was essentially hijacked to drive the language semantics. Fix this by giving CC1 a clean '-fconst-strings' flag to enable const-qualified strings in C and ObjC compilations. Corresponding '-fno-const-strings' is also added. Then the driver is taught to introduce '-fconst-strings' in the CC1 command when '-Wwrite-strings' dominates. This entire flag is basically GCC-bug-compatibility driven, so we also match GCC's bug where '-w' doesn't actually disable -Wwrite-strings. I'm open to changing this though as it seems insane. llvm-svn: 130051 2011-04-23 14:30:43 +08:00			`// RUN: %clang_cc1 -verify -fsyntax-only -fconst-strings %s`
Add support for -Wwrite-strings. Patch by Mike M! Fixes PR 4804. llvm-svn: 98541 2010-03-15 18:54:44 +08:00
			`// PR4804`
make clang print types as "const int " instead of "int const", which is should have done from the beginning. As usual, the most fun with this sort of change is updating all the testcases. llvm-svn: 113090 2010-09-05 08:04:01 +08:00			`char* x = "foo"; // expected-warning {{initializing 'char *' with an expression of type 'const char [4]' discards qualifiers}}`