[compiler-rt] Fix GetRandom in sanitizer_fuchsia.cpp (PR #110155)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: Marco Vanotti (mvanotti)

<details>
<summary>Changes</summary>

The `zx_cprng_draw` system call has no limit on how much you can draw.

---
Full diff: https://github.com/llvm/llvm-project/pull/110155.diff


1 Files Affected:

- (modified) compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp (-1) 


``````````diff
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
index 75dcf546729f6e..e8741585059123 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
@@ -518,7 +518,6 @@ uptr ReadLongProcessName(/*out*/ char *buf, uptr buf_len) {
 uptr MainThreadStackBase, MainThreadStackSize;
 
 bool GetRandom(void *buffer, uptr length, bool blocking) {
-  CHECK_LE(length, ZX_CPRNG_DRAW_MAX_LEN);
   _zx_cprng_draw(buffer, length);
   return true;
 }

``````````

</details>


https://github.com/llvm/llvm-project/pull/110155