zig/test/behavior/inttoptr.zig
Andrew Kelley 5619ce2406 Merge remote-tracking branch 'origin/master' into stage2-whole-file-astgen
Conflicts:
 * doc/langref.html.in
 * lib/std/enums.zig
 * lib/std/fmt.zig
 * lib/std/hash/auto_hash.zig
 * lib/std/math.zig
 * lib/std/mem.zig
 * lib/std/meta.zig
 * test/behavior/alignof.zig
 * test/behavior/bitcast.zig
 * test/behavior/bugs/1421.zig
 * test/behavior/cast.zig
 * test/behavior/ptrcast.zig
 * test/behavior/type_info.zig
 * test/behavior/vector.zig

Master branch added `try` to a bunch of testing function calls, and some
lines also had changed how to refer to the native architecture and other
`@import("builtin")` stuff.
2021-05-08 14:45:21 -07:00

23 lines
597 B
Zig

test "casting random address to function pointer" {
randomAddressToFunction();
comptime randomAddressToFunction();
}
fn randomAddressToFunction() void {
var addr: usize = 0xdeadbeef;
var ptr = @intToPtr(fn () void, addr);
}
test "mutate through ptr initialized with constant intToPtr value" {
forceCompilerAnalyzeBranchHardCodedPtrDereference(false);
}
fn forceCompilerAnalyzeBranchHardCodedPtrDereference(x: bool) void {
const hardCodedP = @intToPtr(*volatile u8, 0xdeadbeef);
if (x) {
hardCodedP.* = hardCodedP.* | 10;
} else {
return;
}
}