From 86ec26b1f00ce9ee2a9d559a1ca0415d05a9b908 Mon Sep 17 00:00:00 2001
From: Evan Typanski <evantypanski@gmail.com>
Date: Sat, 28 Jan 2023 11:53:38 -0500
Subject: [PATCH] translate-c: Fix types on assign expression bool

---
 src/translate_c.zig  |  5 ++++-
 test/translate_c.zig | 16 ++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/translate_c.zig b/src/translate_c.zig
index 47a21f5b5c..a6715d161c 100644
--- a/src/translate_c.zig
+++ b/src/translate_c.zig
@@ -4519,7 +4519,10 @@ fn transCreateNodeAssign(
     defer block_scope.deinit();
 
     const tmp = try block_scope.makeMangledName(c, "tmp");
-    const rhs_node = try transExpr(c, &block_scope.base, rhs, .used);
+    var rhs_node = try transExpr(c, &block_scope.base, rhs, .used);
+    if (!exprIsBooleanType(lhs) and isBoolRes(rhs_node)) {
+        rhs_node = try Tag.bool_to_int.create(c.arena, rhs_node);
+    }
     const tmp_decl = try Tag.var_simple.create(c.arena, .{ .name = tmp, .init = rhs_node });
     try block_scope.statements.append(tmp_decl);
 
diff --git a/test/translate_c.zig b/test/translate_c.zig
index 4ecb6835f5..d2db895a5a 100644
--- a/test/translate_c.zig
+++ b/test/translate_c.zig
@@ -3900,4 +3900,20 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
         \\pub const ZERO = @as(c_int, 0);
         \\pub const WORLD = @as(c_int, 0o0000123);
     });
+
+    cases.add("Assign expression from bool to int",
+        \\void foo(void) {
+        \\    int a;
+        \\    if (a = 1 > 0) {}
+        \\}
+    , &[_][]const u8{
+        \\pub export fn foo() void {
+        \\    var a: c_int = undefined;
+        \\    if ((blk: {
+        \\        const tmp = @boolToInt(@as(c_int, 1) > @as(c_int, 0));
+        \\        a = tmp;
+        \\        break :blk tmp;
+        \\    }) != 0) {}
+        \\}
+    });
 }