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Compiler.h: work around clang 3.9 warning -Wexpansion-to-defined 

Check {GCC,CLANG}_VERSION==0 or >0 instead of using defined(), which
may render undefined behavior.
This commit is contained in:
Max Kellermann 2016-08-23 09:55:59 +02:00
parent 093abaad29
commit b05beb000f
2 changed files with 4 additions and 3 deletions
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1
NEWS
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@ -3,6 +3,7 @@ ver 0.19.19 (not yet released)
- wildmidi: support libWildMidi 0.4 - wildmidi: support libWildMidi 0.4
* output * output
- pulse: support 32 bit, 24 bit and floating point playback - pulse: support 32 bit, 24 bit and floating point playback
* fix clang 3.9 warnings
ver 0.19.18 (2016/08/05) ver 0.19.18 (2016/08/05)
* decoder * decoder

6
src/Compiler.h
View File

@ -39,7 +39,7 @@
* other compiler) or newer? * other compiler) or newer?
*/ */
#define GCC_CHECK_VERSION(major, minor) \ #define GCC_CHECK_VERSION(major, minor) \
(!defined(__clang__) && \ (CLANG_VERSION == 0 && \
GCC_VERSION >= GCC_MAKE_VERSION(major, minor, 0)) GCC_VERSION >= GCC_MAKE_VERSION(major, minor, 0))
/** /**
@ -47,14 +47,14 @@
* gcc version? * gcc version?
*/ */
#define CLANG_OR_GCC_VERSION(major, minor) \ #define CLANG_OR_GCC_VERSION(major, minor) \
(defined(__clang__) || GCC_CHECK_VERSION(major, minor)) (CLANG_VERSION > 0 || GCC_CHECK_VERSION(major, minor))
/** /**
* Are we building with gcc (not clang or any other compiler) and a * Are we building with gcc (not clang or any other compiler) and a
* version older than the specified one? * version older than the specified one?
*/ */
#define GCC_OLDER_THAN(major, minor) \ #define GCC_OLDER_THAN(major, minor) \
(defined(__GNUC__) && !defined(__clang__) && \ (GCC_VERSION > 0 && CLANG_VERSION == 0 && \
GCC_VERSION < GCC_MAKE_VERSION(major, minor, 0)) GCC_VERSION < GCC_MAKE_VERSION(major, minor, 0))
#ifdef __clang__ #ifdef __clang__