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emit error for extern function

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with byvalue return value or parameter.

currently we don't codegen byvalue parameters or return values
correctly for C compatibilty functions so instead of generating
incorrect code, we emit a compile error.

eventually we'll support this feature and remove the compile error.

See #180
This commit is contained in:
Andrew Kelley
2016-09-26 20:00:28 -04:00
parent 7f4d4bdb3f
commit 7ce7e2c9d1
3 changed files with 17 additions and 16 deletions
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11
test/run_tests.cpp
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@@ -884,10 +884,17 @@ var a : i32 = 1;
var a : i32 = 2;
)SOURCE", 1, ".tmp_source.zig:3:1: error: redeclaration of variable 'a'");
add_compile_fail_case("byvalue struct on exported functions", R"SOURCE(
add_compile_fail_case("byvalue struct parameter in exported function", R"SOURCE(
struct A { x : i32, }
export fn f(a : A) {}
)SOURCE", 1, ".tmp_source.zig:3:13: error: byvalue struct parameters not yet supported on extern functions");
)SOURCE", 1, ".tmp_source.zig:3:13: error: byvalue types not yet supported on extern function parameters");
add_compile_fail_case("byvalue struct return value in exported function", R"SOURCE(
struct A { x: i32, }
export fn f() -> A {
A {.x = 1234 }
}
)SOURCE", 1, ".tmp_source.zig:3:18: error: byvalue types not yet supported on extern function return values");
add_compile_fail_case("duplicate field in struct value expression", R"SOURCE(
struct A {