translate-c: demote usage of un-implemented builtins

2021-03-07 20:47:13 -08:00
parent 4683de1e91
commit 715370a10a
4 changed files with 47 additions and 1 deletions
--- a/test/run_translated_c.zig
+++ b/test/run_translated_c.zig
@@ -1221,4 +1221,16 @@ pub fn addCases(cases: *tests.RunTranslatedCContext) void {
        \\    return 0;
        \\}
    , "");
+
+    // See __builtin_alloca_with_align comment in std.c.builtins
+    cases.add("use of unimplemented builtin in unused function does not prevent compilation",
+        \\#include <stdlib.h>
+        \\void unused() {
+        \\    __builtin_alloca_with_align(1, 8);
+        \\}
+        \\int main(void) {
+        \\    if (__builtin_sqrt(1.0) != 1.0) abort();
+        \\    return 0;
+        \\}
+    , "");
 }