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93cb44c805
Pointer subtraction on `void *` or function pointers is UB by the C spec, but is permitted by GCC and Clang as an extension. So, avoid crashing translate-c in such cases, and follow the extension behavior -- there's nothing else that could really be intended.
16 lines
367 B
C
16 lines
367 B
C
#include <stddef.h>
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ptrdiff_t sub_ptr(void *a, void *b) {
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return a - b;
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}
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// translate-c
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// c_frontend=clang
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// target=x86_64-linux
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//
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// pub export fn sub_ptr(arg_a: ?*anyopaque, arg_b: ?*anyopaque) ptrdiff_t {
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// var a = arg_a;
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// _ = &a;
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// var b = arg_b;
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// _ = &b;
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// return @as(c_long, @bitCast(@intFromPtr(a) -% @intFromPtr(b)));
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// }
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