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compiler: remove GNUC check

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QEMU requires Clang or GCC, that define and support __GNUC__ extensions.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20201210134752.780923-12-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc-André Lureau 2020-12-10 17:47:50 +04:00 committed by Paolo Bonzini
parent d55e5bd15a
commit 4e063f7b29
1 changed files with 1 additions and 7 deletions
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8
include/qemu/compiler.h
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@ -64,14 +64,10 @@
(offsetof(container, field) + sizeof_field(container, field))
/* Convert from a base type to a parent type, with compile time checking. */
#ifdef __GNUC__
#define DO_UPCAST(type, field, dev) ( __extension__ ( { \
char __attribute__((unused)) offset_must_be_zero[ \
-offsetof(type, field)]; \
container_of(dev, type, field);}))
#else
#define DO_UPCAST(type, field, dev) container_of(dev, type, field)
#endif
#define typeof_field(type, field) typeof(((type *)0)->field)
#define type_check(t1,t2) ((t1*)0 - (t2*)0)
@ -102,7 +98,7 @@
#if defined(__clang__)
/* clang doesn't support gnu_printf, so use printf. */
# define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m)))
#elif defined(__GNUC__)
#else
/* Use gnu_printf (qemu uses standard format strings). */
# define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
# if defined(_WIN32)
@ -112,8 +108,6 @@
*/
# define __printf__ __gnu_printf__
# endif
#else
#define GCC_FMT_ATTR(n, m)
#endif
#ifndef __has_warning