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1c8a86f063
Follow a similar pattern as we already do for validate_array_init and validate_struct_init. I threw in a bit of behavior test cleanup on top of it.
33 lines
1.0 KiB
Zig
33 lines
1.0 KiB
Zig
const builtin = @import("builtin");
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test "casting integer address to function pointer" {
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if (builtin.zig_backend == .stage1) return error.SkipZigTest;
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if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
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if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
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addressToFunction();
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comptime addressToFunction();
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}
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fn addressToFunction() void {
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var addr: usize = 0xdeadbee0;
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_ = @intToPtr(*const fn () void, addr);
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}
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test "mutate through ptr initialized with constant intToPtr value" {
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if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
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if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
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if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
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forceCompilerAnalyzeBranchHardCodedPtrDereference(false);
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}
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fn forceCompilerAnalyzeBranchHardCodedPtrDereference(x: bool) void {
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const hardCodedP = @intToPtr(*volatile u8, 0xdeadbeef);
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if (x) {
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hardCodedP.* = hardCodedP.* | 10;
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} else {
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return;
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}
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}
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