From 2a9e1c122eed66be1b26b747342b848300b226c7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Martin=20Storsj=C3=B6?= Date: Wed, 12 Sep 2018 23:03:12 +0300 Subject: [PATCH] libfdk-aac: Don't use defined() in a #define MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit MSVC expands the preprocessor directives differently, making the version check fail in the previous form. Clang can warn about this with -Wexpansion-to-defined (not currently enabled by default): warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined] Signed-off-by: Martin Storsjö --- libavcodec/libfdk-aacdec.c | 9 ++++++--- libavcodec/libfdk-aacenc.c | 9 ++++++--- 2 files changed, 12 insertions(+), 6 deletions(-) diff --git a/libavcodec/libfdk-aacdec.c b/libavcodec/libfdk-aacdec.c index ca70a49ad46..63856232d9e 100644 --- a/libavcodec/libfdk-aacdec.c +++ b/libavcodec/libfdk-aacdec.c @@ -25,10 +25,13 @@ #include "avcodec.h" #include "internal.h" +#ifdef AACDECODER_LIB_VL0 #define FDKDEC_VER_AT_LEAST(vl0, vl1) \ - (defined(AACDECODER_LIB_VL0) && \ - ((AACDECODER_LIB_VL0 > vl0) || \ - (AACDECODER_LIB_VL0 == vl0 && AACDECODER_LIB_VL1 >= vl1))) + ((AACDECODER_LIB_VL0 > vl0) || \ + (AACDECODER_LIB_VL0 == vl0 && AACDECODER_LIB_VL1 >= vl1)) +#else +#define FDKDEC_VER_AT_LEAST(vl0, vl1) 0 +#endif #if !FDKDEC_VER_AT_LEAST(2, 5) // < 2.5.10 #define AAC_PCM_MAX_OUTPUT_CHANNELS AAC_PCM_OUTPUT_CHANNELS diff --git a/libavcodec/libfdk-aacenc.c b/libavcodec/libfdk-aacenc.c index f71a276403e..3b492ef8f48 100644 --- a/libavcodec/libfdk-aacenc.c +++ b/libavcodec/libfdk-aacenc.c @@ -26,10 +26,13 @@ #include "audio_frame_queue.h" #include "internal.h" +#ifdef AACENCODER_LIB_VL0 #define FDKENC_VER_AT_LEAST(vl0, vl1) \ - (defined(AACENCODER_LIB_VL0) && \ - ((AACENCODER_LIB_VL0 > vl0) || \ - (AACENCODER_LIB_VL0 == vl0 && AACENCODER_LIB_VL1 >= vl1))) + ((AACENCODER_LIB_VL0 > vl0) || \ + (AACENCODER_LIB_VL0 == vl0 && AACENCODER_LIB_VL1 >= vl1)) +#else +#define FDKENC_VER_AT_LEAST(vl0, vl1) 0 +#endif typedef struct AACContext { const AVClass *class;