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build: work around GCC -Wlogical-op for "nm_utils_is_power_of_two" macros

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We recently added -Wlogical-op in our build process
(commit #41e7fca59762dc928c9d67b555b1409c3477b2b0).
Seems that old versions of gcc (4.8.x) will hit that warning with our
implementation of our "nm_utils_is_power_of_two" and
"test_nm_utils_is_power_of_two_do" macros.
Fool it just adding an always TRUE check.
This commit is contained in:
Francesco Giudici 2017-05-22 11:57:50 +02:00
parent 6389d637a7
commit 7c2ecaa4e0
2 changed files with 3 additions and 3 deletions
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4
libnm-core/tests/test-general.c
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@ -4942,10 +4942,10 @@ enum TEST_IS_POWER_OF_TWP_ENUM_UNSIGNED_64 {
typeof (x) x1 = (x); \
type x2 = (type) x1; \
\
if (((typeof (x1)) x2) == x1 && (x2 > 0 || x2 == 0)) { \
if (((typeof (x1)) x2) == x1 && (x2 > 0 || (x2 == 0 && 1))) { \
/* x2 equals @x, and is positive. Compare to @expect */ \
g_assert_cmpint (expect, ==, nm_utils_is_power_of_two (x2)); \
} else if (!(x2 > 0) && !(x2 == 0)) { \
} else if (!(x2 > 0) && (!(x2 == 0) && 1)) { \
/* a (signed) negative value is always FALSE. */ \
g_assert_cmpint (FALSE, ==, nm_utils_is_power_of_two (x2));\
} \

2
shared/nm-utils/nm-macros-internal.h
View file

@ -644,7 +644,7 @@ nm_clear_g_cancellable (GCancellable **cancellable)
* the type is signed. The second expression is a clumsy way for (__x >= 0),
* which otherwise causes a compiler warning for unsigned types. */ \
( (((typeof(__x)) -1) > ((typeof(__x)) 0)) \
|| (__x > 0 || __x == 0) ) \
|| (__x > 0 || (__x == 0 && 1)) ) \
&& ((__x & (__x - 1)) == 0); \
})