From 6b1ed26e6aaaacfe83ee0a26ec79b378aa7e376b Mon Sep 17 00:00:00 2001
From: AnotherTest <ali.mpfard@gmail.com>
Date: Tue, 12 May 2020 13:24:25 +0430
Subject: [PATCH] LibC: Always assign the offset pointer to endptr in
 strto{u,}ll()

This patch makes strto{u,}l{l,}() behave more to-spec about endptr.
"If endptr is not NULL, strtoull stores the address of the first invalid
character in *endptr."
---
 Libraries/LibC/stdlib.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Libraries/LibC/stdlib.cpp b/Libraries/LibC/stdlib.cpp
index 263ad272b9..139f484475 100644
--- a/Libraries/LibC/stdlib.cpp
+++ b/Libraries/LibC/stdlib.cpp
@@ -929,6 +929,9 @@ long long strtoll(const char* str, char** endptr, int base)
         return 0;
     }
 
+    if (endptr)
+        *endptr = parse_ptr;
+
     if (overflow) {
         errno = ERANGE;
         if (sign != Sign::Negative) {
@@ -1003,6 +1006,9 @@ unsigned long long strtoull(const char* str, char** endptr, int base)
         return 0;
     }
 
+    if (endptr)
+        *endptr = parse_ptr;
+
     if (overflow) {
         errno = ERANGE;
         return LONG_LONG_MAX;