[compiler-rt] 417f5bc - [NFC][sanitizer_common] Fix getpw_getgr.cpp test for large groups (#193625)

[via llvm-commits]

Author: Vitaly Buka
Date: 2026-04-22T23:49:05Z
New Revision: 417f5bc952962437bcd031e412d757f156d4fa64

URL: https://github.com/llvm/llvm-project/commit/417f5bc952962437bcd031e412d757f156d4fa64
DIFF: https://github.com/llvm/llvm-project/commit/417f5bc952962437bcd031e412d757f156d4fa64.diff

LOG: [NFC][sanitizer_common] Fix getpw_getgr.cpp test for large groups (#193625)

On my desktop buffer needs to be about 1MB.

Added: 
    

Modified: 
    compiler-rt/test/sanitizer_common/TestCases/Posix/getpw_getgr.cpp

Removed: 
    


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diff  --git a/compiler-rt/test/sanitizer_common/TestCases/Posix/getpw_getgr.cpp b/compiler-rt/test/sanitizer_common/TestCases/Posix/getpw_getgr.cpp
index 848774a8909bd..ad16da10a3b14 100644
--- a/compiler-rt/test/sanitizer_common/TestCases/Posix/getpw_getgr.cpp
+++ b/compiler-rt/test/sanitizer_common/TestCases/Posix/getpw_getgr.cpp
@@ -1,12 +1,15 @@
 // RUN: %clangxx %s -o %t && %run %t
 
 #include <assert.h>
+#include <errno.h>
 #include <grp.h>
 #include <memory>
 #include <pwd.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <string>
+#include <unistd.h>
 
 std::unique_ptr<char []> any_group;
 const int N = 123456;
@@ -63,8 +66,16 @@ template <class T, class Fn, class... Args>
 void test_r(Fn f, Args... args) {
   T gr;
   T *result;
-  char buff[10000];
-  assert(!f(args..., &gr, buff, sizeof(buff), &result));
+  std::string buff;
+
+  int r;
+  do {
+    buff.resize(1000 + buff.size() * 2);
+    r = f(args..., &gr, buff.data(), buff.size(), &result);
+  } while (r == ERANGE);
+
+  assert(!r);
+
   Check(&gr);
   Check(result);
 }