https://llvm.org/bugs/show_bug.cgi?id=26675
Bug ID: 26675
Summary: intrin.h says "static __inline__" twice, triggering
-Wduplicate-decl-specifier
Product: new-bugs
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: sfi...@hotmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
http://llvm.org/svn/llvm-project/cfe/trunk/lib/Headers/Intrin.h contains:
[...]
static __inline__
unsigned long __cdecl _lrotr(unsigned long, int);
static __inline__
static __inline__
void _ReadBarrier(void);
static __inline__
void _ReadWriteBarrier(void);
[...]
The duplicated line before _ReadBarrier() triggers -Wduplicate-decl-specifier.
This is usually suppressed because it's a system header, but preprocessing
without linemarkers will reveal the warning. Here's what that looks like (with
Clang/C2, but this should repro with Clang/LLVM on Windows too):
C:\Temp>type meow.cpp
#include <intrin.h>
C:\Temp>clang -c meow.cpp
C:\Temp>clang -E -P meow.cpp > meow.ii
C:\Temp>clang -c -Wno-ignored-attributes meow.ii
meow.ii:6865:1: warning: duplicate 'static' declaration specifier
[-Wduplicate-decl-specifier]
static __inline__
^~~~~~~
meow.ii:6865:8: warning: duplicate 'inline' declaration specifier
[-Wduplicate-decl-specifier]
static __inline__
^
2 warnings generated.
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