From a4f646d694d68f75da8a401678de8288ba116b00 Mon Sep 17 00:00:00 2001
From: Alexander van der Grinten <alexander.vandergrinten@gmail.com>
Date: Sun, 10 Dec 2017 20:19:18 +0100
Subject: [PATCH] libc: Implement functions used by libdrm

---
 libc/generic/ansi/include/inttypes.h            | 2 ++
 libc/generic/ansi/include/stdio.h               | 3 +++
 libc/generic/ansi/src/stdio-stubs.cpp           | 6 ++++++
 libc/generic/posix/include/mlibc/posix_string.h | 1 +
 libc/generic/posix/src/posix_string.cpp         | 5 +++++
 5 files changed, 17 insertions(+)

diff --git a/libc/generic/ansi/include/inttypes.h b/libc/generic/ansi/include/inttypes.h
index 00d9f46f..3eb7fd58 100644
--- a/libc/generic/ansi/include/inttypes.h
+++ b/libc/generic/ansi/include/inttypes.h
@@ -89,6 +89,8 @@
 #define PRIxPTR "lx"
 #define PRIXPTR "lX"
 
+#define SCNu64 "lu"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/libc/generic/ansi/include/stdio.h b/libc/generic/ansi/include/stdio.h
index 476ca35b..87be8c03 100644
--- a/libc/generic/ansi/include/stdio.h
+++ b/libc/generic/ansi/include/stdio.h
@@ -115,6 +115,9 @@ int getchar_unlocked(void);
 int putc_unlocked(int, FILE *);
 int putchar_unlocked(int);
 
+// GLIBC extensions.
+int asprintf(char **, const char *, ...);
+
 // Linux unlocked I/O extensions.
 
 void clearerr_unlocked(FILE *);
diff --git a/libc/generic/ansi/src/stdio-stubs.cpp b/libc/generic/ansi/src/stdio-stubs.cpp
index d2a6b685..c6197452 100644
--- a/libc/generic/ansi/src/stdio-stubs.cpp
+++ b/libc/generic/ansi/src/stdio-stubs.cpp
@@ -278,6 +278,12 @@ int putchar_unlocked(int) {
 	__builtin_unreachable();
 }
 
+// GLIBC extensions.
+int asprintf(char **, const char *, ...) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+
 // Linux unlocked I/O extensions.
 
 void clearerr_unlocked(FILE *) {
diff --git a/libc/generic/posix/include/mlibc/posix_string.h b/libc/generic/posix/include/mlibc/posix_string.h
index 89470079..482cfcbf 100644
--- a/libc/generic/posix/include/mlibc/posix_string.h
+++ b/libc/generic/posix/include/mlibc/posix_string.h
@@ -7,6 +7,7 @@ extern "C" {
 #endif
 
 char *strdup(const char *string);
+char *strndup(const char *, size_t);
 
 #ifdef __cplusplus
 }
diff --git a/libc/generic/posix/src/posix_string.cpp b/libc/generic/posix/src/posix_string.cpp
index c2770fb0..a4ceef2f 100644
--- a/libc/generic/posix/src/posix_string.cpp
+++ b/libc/generic/posix/src/posix_string.cpp
@@ -13,3 +13,8 @@ char *strdup(const char *string) {
 	return new_string;
 }
 
+char *strndup(const char *string, size_t) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+