From: Paul Floyd <pjfloyd@wanadoo.fr>
Date: Fri, 26 Dec 2025 13:20:34 +0000 (+0100)
Subject: Darwin regtest: ensure no stdout output for memcheck/tests/darwin/deep_badparam
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6f06c0aec8e65bf0428395aff256221a3ed78e2f;p=thirdparty%2Fvalgrind.git

Darwin regtest: ensure no stdout output for memcheck/tests/darwin/deep_badparam

The test was doing a write of an uninit ilocal 32byte char buffer.
This has started outputting junk resulting in a stdout diff. So
make sure that the buffer only contains zeros (but still uninit).
Hope the compiler doesn't get too smart.
---

diff --git a/memcheck/tests/darwin/deep_badparam.c b/memcheck/tests/darwin/deep_badparam.c
index 9f1268370..e86762747 100644
--- a/memcheck/tests/darwin/deep_badparam.c
+++ b/memcheck/tests/darwin/deep_badparam.c
@@ -5,6 +5,8 @@
 int func_six(int x)
 {
     char b[32];
+    for (int i = 0; i < sizeof(b); ++i)
+       b[i] /= 256;
     int r = write(1, b, sizeof(b));
     return x;
 }
diff --git a/memcheck/tests/darwin/deep_badparam.stderr.exp b/memcheck/tests/darwin/deep_badparam.stderr.exp
index 3eeddc70c..165c7dbb0 100644
--- a/memcheck/tests/darwin/deep_badparam.stderr.exp
+++ b/memcheck/tests/darwin/deep_badparam.stderr.exp
@@ -1,12 +1,12 @@
 Syscall param write(buf) points to uninitialised byte(s)
    ...
-   by 0x........: func_six (deep_badparam.c:8)
-   by 0x........: func_five (deep_badparam.c:14)
-   by 0x........: func_four (deep_badparam.c:19)
-   by 0x........: func_three (deep_badparam.c:24)
-   by 0x........: func_two (deep_badparam.c:29)
-   by 0x........: func_one (deep_badparam.c:34)
-   by 0x........: main (deep_badparam.c:39)
+   by 0x........: func_six (deep_badparam.c:10)
+   by 0x........: func_five (deep_badparam.c:16)
+   by 0x........: func_four (deep_badparam.c:21)
+   by 0x........: func_three (deep_badparam.c:26)
+   by 0x........: func_two (deep_badparam.c:31)
+   by 0x........: func_one (deep_badparam.c:36)
+   by 0x........: main (deep_badparam.c:41)
  Address 0x........ is on thread 1's stack
  in frame #1, created by func_six (deep_badparam.c:6)