From 75307803a21adb57991cacfed4e417498c068d2f Mon Sep 17 00:00:00 2001
From: Dominika Liberda <ja@sdomi.pl>
Date: Sun, 11 Jun 2023 06:00:11 +0200
Subject: [PATCH] LibC: Implement stpcpy

For better code clarity, also reformatted how strcpy increments
pointers.
---
 Userland/Libraries/LibC/string.cpp | 16 ++++++++++++++--
 Userland/Libraries/LibC/string.h   |  1 +
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/Userland/Libraries/LibC/string.cpp b/Userland/Libraries/LibC/string.cpp
index c923c009c2..24716107b1 100644
--- a/Userland/Libraries/LibC/string.cpp
+++ b/Userland/Libraries/LibC/string.cpp
@@ -187,11 +187,23 @@ void* memmem(void const* haystack, size_t haystack_length, void const* needle, s
 char* strcpy(char* dest, char const* src)
 {
     char* original_dest = dest;
-    while ((*dest++ = *src++) != '\0')
-        ;
+    while ((*dest = *src) != '\0') {
+        dest++;
+        src++;
+    }
     return original_dest;
 }
 
+// https://pubs.opengroup.org/onlinepubs/9699919799/functions/stpcpy.html
+char* stpcpy(char* dest, char const* src)
+{
+    while ((*dest = *src) != '\0') {
+        dest++;
+        src++;
+    }
+    return dest;
+}
+
 // https://pubs.opengroup.org/onlinepubs/9699919799/functions/strncpy.html
 char* strncpy(char* dest, char const* src, size_t n)
 {
diff --git a/Userland/Libraries/LibC/string.h b/Userland/Libraries/LibC/string.h
index 8a1b6b631c..824c2d7c28 100644
--- a/Userland/Libraries/LibC/string.h
+++ b/Userland/Libraries/LibC/string.h
@@ -37,6 +37,7 @@ __attribute__((malloc)) char* strdup(char const*);
 __attribute__((malloc)) char* strndup(char const*, size_t);
 
 char* strcpy(char* dest, char const* src);
+char* stpcpy(char* dest, char const* src);
 char* strncpy(char* dest, char const* src, size_t);
 __attribute__((warn_unused_result)) size_t strlcpy(char* dest, char const* src, size_t);