diff options
| author | Jordan Rose <jordan_rose@apple.com> | 2012-06-06 17:25:21 +0000 |
|---|---|---|
| committer | Jordan Rose <jordan_rose@apple.com> | 2012-06-06 17:25:21 +0000 |
| commit | d73ef135ba029db59c0b5649e6117845d9e39600 (patch) | |
| tree | 4e353271c446576ebfa70b18525f90ad68fa372c /lib/Parse/Parser.cpp | |
| parent | a08e7bc74b5635995fc50009f240dd3feb1999e2 (diff) | |
Add pedantic warning -Wempty-translation-unit (C11 6.9p1).
In standard C since C89, a 'translation-unit' is syntactically defined to have
at least one "external-declaration", which is either a decl or a function
definition. In Clang the latter gives us a declaration as well.
The tricky bit about this warning is that our predefines can contain external
declarations (__builtin_va_list and the 128-bit integer types). Therefore our
AST parser now makes sure we have at least one declaration that doesn't come
from the predefines buffer.
Also, remove bogus warning about empty source files. This doesn't catch source
files that only contain comments, and never fired anyway because of our
predefines.
PR12665 and <rdar://problem/9165548>
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158085 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Parse/Parser.cpp')
| -rw-r--r-- | lib/Parse/Parser.cpp | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/lib/Parse/Parser.cpp b/lib/Parse/Parser.cpp index 504071405b..f0e2b3aa85 100644 --- a/lib/Parse/Parser.cpp +++ b/lib/Parse/Parser.cpp @@ -439,10 +439,6 @@ void Parser::Initialize() { // Prime the lexer look-ahead. ConsumeToken(); - if (Tok.is(tok::eof) && - !getLangOpts().CPlusPlus) // Empty source file is an extension in C - Diag(Tok, diag::ext_empty_source_file); - // Initialization for Objective-C context sensitive keywords recognition. // Referenced in Parser::ParseObjCTypeQualifierList. if (getLangOpts().ObjC1) { |