Commit Graph

2 Commits

Author SHA1 Message Date
Aaron Ballman 22db4824b9 Use functions with prototypes when appropriate; NFC
A significant number of our tests in C accidentally use functions
without prototypes. This patch converts the function signatures to have
a prototype for the situations where the test is not specific to K&R C
declarations. e.g.,

  void func();

becomes

  void func(void);

This is the third batch of tests being updated (there are a significant
number of other tests left to be updated).
2022-02-07 09:25:01 -05:00
Hans Wennborg 8f62c5ca22 Better diagnostics for string initialization.
This commit improves Clang's diagnostics for string initialization.
Where it would previously say:

  /tmp/a.c:3:9: error: array initializer must be an initializer list
  wchar_t s[] = "Hi";
          ^
  /tmp/a.c:4:6: error: array initializer must be an initializer list or string literal
  char t[] = L"Hi";
       ^

It will now say

  /tmp/a.c:3:9: error: initializing wide char array with non-wide string literal
  wchar_t s[] = "Hi";
          ^
  /tmp/a.c:4:6: error: initializing char array with wide string literal
  char t[] = L"Hi";
       ^

As a bonus, it also fixes the fact that Clang would previously reject
this valid C11 code:

  char16_t s[] = u"hi";
  char32_t t[] = U"hi";

because it would only recognize the built-in types for char16_t and
char32_t, which do not exist in C.

llvm-svn: 181880
2013-05-15 11:03:04 +00:00