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| author | Charles Bailey <cbailey32@bloomberg.net> | 2015-06-24 22:12:07 (GMT) |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2015-06-25 00:14:00 (GMT) |
| commit | e2c6f7cd5a66ed0009662d2651e0cf3c655e83a9 (patch) | |
| tree | c79b499b4fe40cb26c4d8b78e920f6e60b709432 /git-compat-util.h | |
| parent | 89c855ed3cbe64bea93ea081d0e96077e9ee8517 (diff) | |
| download | git-e2c6f7cd5a66ed0009662d2651e0cf3c655e83a9.zip git-e2c6f7cd5a66ed0009662d2651e0cf3c655e83a9.tar.gz git-e2c6f7cd5a66ed0009662d2651e0cf3c655e83a9.tar.bz2 | |
Fix definition of ARRAY_SIZE for non-gcc builds
The improved ARRAY_SIZE macro uses BARF_UNLESS_AN_ARRAY which expands
to a valid check for recent gcc versions and to 0 for older gcc
versions but is not defined on non-gcc builds.
Non-gcc builds need this macro to expand to 0 as well. The current outer
test (defined(__GNUC__) && (__GNUC__ >= 3)) is a strictly weaker
condition than the inner test (GIT_GNUC_PREREQ(3, 1)) so we can omit the
outer test and cause the BARF_UNLESS_AN_ARRAY macro to be defined
correctly on non-gcc builds as well as gcc builds with older versions.
Signed-off-by: Charles Bailey <cbailey32@bloomberg.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'git-compat-util.h')
| -rw-r--r-- | git-compat-util.h | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/git-compat-util.h b/git-compat-util.h index 7fad5aa..079b99d 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -58,15 +58,13 @@ #define BUILD_ASSERT_OR_ZERO(cond) \ (sizeof(char [1 - 2*!(cond)]) - 1) -#if defined(__GNUC__) && (__GNUC__ >= 3) -# if GIT_GNUC_PREREQ(3, 1) +#if GIT_GNUC_PREREQ(3, 1) /* &arr[0] degrades to a pointer: a different type from an array */ # define BARF_UNLESS_AN_ARRAY(arr) \ BUILD_ASSERT_OR_ZERO(!__builtin_types_compatible_p(__typeof__(arr), \ __typeof__(&(arr)[0]))) -# else -# define BARF_UNLESS_AN_ARRAY(arr) 0 -# endif +#else +# define BARF_UNLESS_AN_ARRAY(arr) 0 #endif /* * ARRAY_SIZE - get the number of elements in a visible array |