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nptl: Add workaround for ASSERT_PTHREAD_INTERNAL_SIZE with GCC 4.9
GCC 4.9 (the minimum current supported) emits an warning for universal zero initializer ({0}) on ASSERT_PTHREAD_INTERNAL_SIZE: pthread_attr_init.c: In function ‘__pthread_attr_init_2_1’: pthread_attr_init.c:37:3: error: missing braces around initializer [-Werror=missing-braces] ASSERT_PTHREAD_INTERNAL_SIZE (pthread_attr_t, struct pthread_attr); ^ pthread_attr_init.c:37:3: error: (near initialization for ‘(anonymous).__size’) [-Werror=missing-braces] It is fact GCC BZ#53119 [1] fixed in later version (GCC5+). Since current branch is closed and there is no indication it will be backports (comment #20 in same bug report) this patch fixes by using a double bracket to zero initialize the struct. Checked on x86_64-linux-gnu with GCC 7 and GCC 4.9. * nptl/pthreadP.h (ASSERT_PTHREAD_INTERNAL_SIZE): Add workarond for -Wmissing-braces on GCC 4.9. [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119 Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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2017-11-21 Adhemerval Zanella <adhemerval.zanella@linaro.org>
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* nptl/pthreadP.h (ASSERT_PTHREAD_INTERNAL_SIZE): Add workarond for
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-Wmissing-braces on GCC 4.9.
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2017-11-21 Stefan Liebler <stli@linux.vnet.ibm.com>
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* sysdeps/s390/s390-64/start.S (_start): Add cfi information for r14.
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@ -644,7 +644,7 @@ check_stacksize_attr (size_t st)
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"sizeof (" #type ") != " #size)
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#define ASSERT_PTHREAD_INTERNAL_SIZE(type, internal) \
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_Static_assert (sizeof ((type) { 0 }).__size >= sizeof (internal), \
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_Static_assert (sizeof ((type) { { 0 } }).__size >= sizeof (internal),\
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"sizeof (" #type ".__size) < sizeof (" #internal ")")
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#define ASSERT_PTHREAD_STRING(x) __STRING (x)
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