[PATCH olang v1] codegen: allow function call at the block level

[Carlos Maniero <carlos@maniero.me>]

The extern test was also renamed to match its intention.

Signed-off-by: Carlos Maniero <carlos@maniero.me>
---
 src/codegen_x86_64.c                                |  3 ++-
 ...037_variable_overflow.ol => 0037_extern_call.ol} | 13 ++++++++-----
 2 files changed, 10 insertions(+), 6 deletions(-)
 rename tests/olc/{0037_variable_overflow.ol => 0037_extern_call.ol} (82%)

diff --git a/src/codegen_x86_64.c b/src/codegen_x86_64.c
index c4cef3c..deb7e24 100644
--- a/src/codegen_x86_64.c
+++ b/src/codegen_x86_64.c
@@ -745,7 +745,8 @@ codegen_x86_64_emit_block(codegen_x86_64_t *codegen, ast_block_t *block)
                 break;
             }
 
-            case AST_NODE_BINARY_OP: {
+            case AST_NODE_BINARY_OP:
+            case AST_NODE_FN_CALL: {
                 codegen_x86_64_emit_expression(codegen, node);
                 break;
             }
diff --git a/tests/olc/0037_variable_overflow.ol b/tests/olc/0037_extern_call.ol
similarity index 82%
rename from tests/olc/0037_variable_overflow.ol
rename to tests/olc/0037_extern_call.ol
index be36e77..68fe139 100644
--- a/tests/olc/0037_variable_overflow.ol
+++ b/tests/olc/0037_extern_call.ol
@@ -16,12 +16,14 @@
 extern fn putchar(c: u32): u32
 
 fn main(): u32 {
-  return putchar(111)
+  putchar(111)
+
+  return 0
 }
 
 # TEST test_compile(exit_code=0)
 #
-# TEST test_run_binary(exit_code=111)
+# TEST test_run_binary(exit_code=0)
 #
 # TEST test_ast WITH
 # Translation_Unit
@@ -29,11 +31,12 @@ fn main(): u32 {
 # | `-Param_Definition <name:c> <type:u32>
 # `-Function_Definition <name:main> <return:u32>
 #   `-Block
+#     |-Function_Call <name:putchar>
+#     | `-Literal <kind:u32> <value:111>
 #     `-Return_Statement
-#       `-Function_Call <name:putchar>
-#         `-Literal <kind:u32> <value:111>
+#       `-Literal <kind:u32> <value:0>
 # END
 #
 # TEST test_contains_tokens WITH
-# ./0037_variable_overflow.ol:16:1: <extern>
+# ./0037_extern_call.ol:16:1: <extern>
 # END

base-commit: 9c38120024f10cbfcedb8525ea7bd6c98d7f7b1e
-- 
2.46.1