add a return type parameter to call and call_import in the C API. we need it since we don't know the type while building functions

1 files changed, 6 insertions, 2 deletions

diff --git a/src/binaryen-c.h b/src/binaryen-c.h
index 5a22169d9..583454a9f 100644
--- a/src/binaryen-c.h
+++ b/src/binaryen-c.h
@@ -199,8 +199,12 @@ BinaryenExpressionRef BinaryenLoop(BinaryenModuleRef module, const char* out, co
 BinaryenExpressionRef BinaryenBreak(BinaryenModuleRef module, const char* name, BinaryenExpressionRef condition, BinaryenExpressionRef value);
 // Switch: value can be NULL
 BinaryenExpressionRef BinaryenSwitch(BinaryenModuleRef module, const char **names, BinaryenIndex numNames, const char* defaultName, BinaryenExpressionRef condition, BinaryenExpressionRef value);
-BinaryenExpressionRef BinaryenCall(BinaryenModuleRef module, const char *target, BinaryenExpressionRef* operands, BinaryenIndex numOperands);
-BinaryenExpressionRef BinaryenCallImport(BinaryenModuleRef module, const char *target, BinaryenExpressionRef* operands, BinaryenIndex numOperands);
+// Call, CallImport: Note the 'returnType' parameter. You must declare the
+//                   type returned by the function being called, as that
+//                   function might not have been created yet, so we don't
+//                   know what it is.
+BinaryenExpressionRef BinaryenCall(BinaryenModuleRef module, const char *target, BinaryenExpressionRef* operands, BinaryenIndex numOperands, BinaryenType returnType);
+BinaryenExpressionRef BinaryenCallImport(BinaryenModuleRef module, const char *target, BinaryenExpressionRef* operands, BinaryenIndex numOperands, BinaryenType returnType);
 BinaryenExpressionRef BinaryenCallIndirect(BinaryenModuleRef module, BinaryenExpressionRef target, BinaryenExpressionRef* operands, BinaryenIndex numOperands, BinaryenFunctionTypeRef type);
 // GetLocal: Note the 'type' parameter. It might seem redundant, since the
 //           local at that index must have a type. However, this API lets you