From 59f01e327a124f73873d08bd42e59b0ff4097516 Mon Sep 17 00:00:00 2001
From: Jakub Konka <kubkon@jakubkonka.com>
Date: Thu, 20 Jul 2023 23:29:09 +0200
Subject: [PATCH] elf: test handling of preinit array

---
 test/elf.zig | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/test/elf.zig b/test/elf.zig
index 7fc9ae4d..f953f83f 100644
--- a/test/elf.zig
+++ b/test/elf.zig
@@ -41,6 +41,7 @@ pub fn addElfTests(b: *Build, opts: Options) *Step {
         elf_step.dependOn(testLinkerScript(b, opts));
         elf_step.dependOn(testNoEhFrameHdr(b, opts));
         elf_step.dependOn(testPltGot(b, opts));
+        elf_step.dependOn(testPreinitArray(b, opts));
         elf_step.dependOn(testTlsDesc(b, opts));
         elf_step.dependOn(testTlsDescImport(b, opts));
         elf_step.dependOn(testTlsDescStatic(b, opts));
@@ -1663,6 +1664,39 @@ fn testPltGot(b: *Build, opts: Options) *Step {
     return test_step;
 }
 
+fn testPreinitArray(b: *Build, opts: Options) *Step {
+    const test_step = b.step("test-elf-preinit-array", "");
+
+    {
+        const obj = cc(b, opts);
+        obj.addCSource("void _start() {}");
+        obj.addArg("-c");
+
+        const exe = ld(b, opts);
+        exe.addFileSource(obj.out);
+
+        const check = exe.check();
+        check.checkInDynamicSection();
+        check.checkNotPresent("PREINIT_ARRAY");
+    }
+
+    {
+        const exe = cc(b, opts);
+        exe.addCSource(
+            \\void preinit_fn() {}
+            \\int main() {}
+            \\__attribute__((section(".preinit_array")))
+            \\void *preinit[] = { preinit_fn };
+        );
+
+        const check = exe.check();
+        check.checkInDynamicSection();
+        check.checkContains("PREINIT_ARRAY");
+    }
+
+    return test_step;
+}
+
 fn testTlsDesc(b: *Build, opts: Options) *Step {
     const test_step = b.step("test-elf-tls-desc", "");