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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
Argyrios Kyrtzidis 77ed8972fa [Sema] Revert the change in r200622 that allowed integer casts to silence -Wnon-literal-null-conversion in C code. 
It is actually useful to warn in such cases, thanks to Dmitri for pushing on this and making us see the light!

Related to rdar://15925483 and rdar://15922612. The latter radar is where the usefulness of the warning is most clear.

llvm-svn: 201165
 2014-02-11 17:53:22 +00:00
Argyrios Kyrtzidis 278c8d33e2 [Sema] For -Wnon-literal-null-conversion warning, look through integer casts, which are used 
by some projects in their null macro.

rdar://15925483

llvm-svn: 200521
 2014-01-31 07:51:32 +00:00
Richard Smith e934d7c9f5 PR10837: Warn if a null pointer constant is formed by a zero integer constant 
expression that is not a zero literal, in C. This is a different, and more
targeted, approach than that in r194540.

llvm-svn: 195303
 2013-11-21 01:53:02 +00:00
Joerg Sonnenberger 05bd2da328 Revert r194540, it breaks various C++ programs. 
llvm-svn: 195126
 2013-11-19 13:38:38 +00:00
Richard Smith 7309f60b9e PR10837: Warn if a null pointer constant is formed by a zero integer constant 
expression that is not a zero literal, in C. Patch by Ivan A. Kosarev!

llvm-svn: 194540
 2013-11-13 01:24:28 +00:00