[libc] Disable null checks on baremetal platforms

[petrhosek]

On baremetal platforms, 0 is often a valid address and the null checks can break otherwise correct code.

[llvmbot]

@llvm/pr-subscribers-libc

Author: Petr Hosek (petrhosek)

Changes

On baremetal platforms, 0 is often a valid address and the null checks can break otherwise correct code.

---

Full diff: https://github.com/llvm/llvm-project/pull/163515.diff

1 Files Affected:

• (modified) libc/config/baremetal/config.json (+5)

diff --git a/libc/config/baremetal/config.json b/libc/config/baremetal/config.json
index f01e5084b9695..796b1d8ed1398 100644
--- a/libc/config/baremetal/config.json
+++ b/libc/config/baremetal/config.json
@@ -38,5 +38,10 @@
     "LIBC_CONF_MATH_OPTIMIZATIONS": {
       "value": "(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES)"
     }
+  },
+  "general": {
+    "LIBC_ADD_NULL_CHECKS": {
+      "value": false
+    }
   }
 }

[emomaxd]

lgtm