llvm-project/clang/test/Preprocessor/extension-warning.c
Aaron Ballman 0dd49a5628 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 eighth batch of tests being updated (there are a
significant number of other tests left to be updated).
2022-02-12 07:25:06 -05:00

19 lines
579 B
C

// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s
// The preprocessor shouldn't warn about extensions within macro bodies that
// aren't expanded.
#define TY typeof
#define TY1 typeof(1)
// But we should warn here
TY1 x; // expected-warning {{extension}}
TY(1) x; // FIXME: And we should warn here
// Note: this warning intentionally doesn't trigger on keywords like
// __attribute; the standard allows implementation-defined extensions
// prefixed with "__".
// Current list of keywords this can trigger on:
// inline, restrict, asm, typeof, _asm
void whatever(void) {}