As on FreeBSD, defining _XOPEN_SOURCE to 600 on DragonFly BSD 2.4-RELEASE or later hides symbols from programs, which leads to implicit declaration of functions, making the return value to be assumed an int. On architectures where sizeof(int) < sizeof(void *), this can cause unexpected behaviors or crashes. This change won't affect other OSes unless they define __DragonFly__ macro, or older versions of DragonFly BSD as the current git code doesn't rely on the features only available with _XOPEN_SOURCE set to 600 on DragonFly.
Signed-off-by: YONETANI Tomokazu <y0netan1@dragonflybsd.org> --- git-compat-util.h | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
Show changes to git-compat-util.h +2 −1
diff --git a/git-compat-util.h b/git-compat-util.h index a3c4537..e292926 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -55,7 +55,8 @@ # else # define _XOPEN_SOURCE 500 # endif -#elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && !defined(_M_UNIX) && !defined(sgi) +#elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && \ + !defined(_M_UNIX) && !defined(sgi) && !defined(__DragonFly__) #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */ #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */ #endif
-- 1.6.6.2