mirror of
https://github.com/frida/tinycc
synced 2024-12-23 05:26:49 +03:00
f85b1e393f
tcc would reject e.g.,
void f(){ struct {_Bool x:_Generic(({0;}),default:1);} my_x; }
with `expected constant`. This patch makes it accept it.
(The patch also makes tcc's _Generic a little more "generic" than that
of gcc and clang in that that tcc now also accepts
`struct {_Bool x:_Generic(({0;}),default:1);} my_x;` in file scope
while gcc and clang don't, but I think there's no harm in that
and gcc and clang might as well accept it in filescope too, given
that they have no problem with
e.g., `/*filescope:*/int x=1, y=2, z=_Generic(x+y, int:3);`)
79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
#include <stdio.h>
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const int a = 0;
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struct a {
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int a;
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};
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struct b {
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int a;
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};
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int a_f()
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{
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return 20;
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}
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int b_f()
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{
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return 10;
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}
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typedef int (*fptr)(int);
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int foo(int i)
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{
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return i;
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}
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typedef int int_type1;
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#define gen_sw(a) _Generic(a, const char *: 1, default: 8, int: 123);
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int main()
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{
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int i = 0;
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signed long int l = 2;
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struct b titi;
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const int * const ptr;
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const char *ti;
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int_type1 i2;
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i = _Generic(a, int: a_f, const int: b_f)();
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printf("%d\n", i);
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i = _Generic(a, int: a_f() / 2, const int: b_f() / 2);
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printf("%d\n", i);
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i = _Generic(ptr, int *:1, int * const:2, default:20);
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printf("%d\n", i);
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i = gen_sw(a);
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printf("%d\n", i);
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i = _Generic(titi, struct a:1, struct b:2, default:20);
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printf("%d\n", i);
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i = _Generic(i2, char: 1, int : 0);
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printf("%d\n", i);
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i = _Generic(a, char:1, int[4]:2, default:5);
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printf("%d\n", i);
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i = _Generic(17, int :1, int **:2);
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printf("%d\n", i);
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i = _Generic(17L, int :1, long :2, long long : 3);
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printf("%d\n", i);
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i = _Generic("17, io", char *: 3, const char *: 1);
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printf("%d\n", i);
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i = _Generic(ti, const unsigned char *:1, const char *:4, char *:3,
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const signed char *:2);
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printf("%d\n", i);
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printf("%s\n", _Generic(i + 2L, long: "long", int: "int",
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long long: "long long"));
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i = _Generic(l, long: 1, int: 2);
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printf("%d\n", i);
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i = _Generic(foo, fptr: 3, int: 4);
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printf("%d\n", i);
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(void)_Generic((int(*)[2]){0}, int(*)[2]:0, int(*)[4]:0); //shouldn't match twice
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//should accept ({ }) in the controlling expr of _Generic even in const_wanted contexts
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struct { _Bool x_0: _Generic(({0;}),default:1); } my_x;
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return 0;
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}
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