diff options
| author | Cyrill Gorcunov <gorcunov@gmail.com> | 2018-12-15 20:21:09 +0300 |
|---|---|---|
| committer | Cyrill Gorcunov <gorcunov@gmail.com> | 2018-12-15 20:33:25 +0300 |
| commit | 7d23d8d26f2c68c0fab7e9f1e1fab7efefd52dd4 (patch) | |
| tree | 6a414f827fe2dd713a7ab3354989fcbc59497d08 /include/compiler.h | |
| parent | 6f33dbb0876a809bee1439246c511aebaf6362c8 (diff) | |
| download | nasm-7d23d8d26f2c68c0fab7e9f1e1fab7efefd52dd4.tar.gz | |
compier: Zap __builtin_constant_p on gcc 4.x series
It is been discovered that on gcc-4.8.4 compiler can't
properly evaluate __builtin_constant_p.
| gcc (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4
|
| In file included from asm/nasm.c:38:0:
| asm/nasm.c: In function ‘assemble_file’:
| ./include/compiler.h:377:27: error: first argument to ‘__builtin_choose_expr’ not a constant
| # define if_constant(x,y) __builtin_choose_expr(is_constant(x),(x),(y))
| ^
| ./include/nasmlib.h:145:23: note: in expansion of macro ‘if_constant’
| static_assert(if_constant(x, 1), #x); \
| ^
| ./include/nasmlib.h:167:9: note: in expansion of macro ‘nasm_try_static_assert’
| nasm_try_static_assert(x); \
| ^
| asm/nasm.c:1544:17: note: in expansion of macro ‘nasm_assert’
| nasm_assert(output_ins.times >= 0);
|
Zap it for 4.x series so we could run our tests.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Diffstat (limited to 'include/compiler.h')
| -rw-r--r-- | include/compiler.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/compiler.h b/include/compiler.h index aab93566..7a80e2e4 100644 --- a/include/compiler.h +++ b/include/compiler.h @@ -353,7 +353,11 @@ size_t strnlen(const char *s, size_t maxlen); /* Determine probabilistically if something is a compile-time constant */ #ifdef HAVE___BUILTIN_CONSTANT_P -# define is_constant(x) __builtin_constant_p((x)) +# if defined(__GNUC__) && (__GNUC__ >= 5) +# define is_constant(x) __builtin_constant_p((x)) +# else +# define is_constant(x) false +# endif #else # define is_constant(x) false #endif |