liblinux++

commit 09504ff0b7b080108faeda3c94982aaa429b6885
parent 8532467e15086a625e148204eb8c42ab9ce22a32
Author: Henry Wilson <henry@henryandlizzy.uk>
Date:   Sun, 28 Dec 2025 21:25:19 +0000

[[nodiscard]] on syscall_result

Diffstat:
M
Tupfile
 | 
2
+-
M
cat.cpp
 | 
2
+-
M
linux.hpp
 | 
2
+-
M
ls.cpp
 | 
2
+-
M
paste.cpp
 | 
4
++--
M
sleep.cpp
 | 
2
+-
M
test.cpp
 | 
6
+++---

7 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/Tupfile b/Tupfile
@@ -1,4 +1,4 @@
-CXXFLAGS = -g -Os -fno-exceptions -fno-rtti -fno-asynchronous-unwind-tables -fno-builtin -fno-pic -fno-pie -fno-stack-protector -fdiagnostics-color=always
+CXXFLAGS = -Werror -g -Os -fno-exceptions -fno-rtti -fno-asynchronous-unwind-tables -fno-builtin -fno-pic -fno-pie -fno-stack-protector -fdiagnostics-color=always
 LDFLAGS = --gc-sections
 
 : foreach *.cpp |> clang++ --target=aarch64 $(CXXFLAGS) -c -o %o %f |> obj/%B.aarch64.o {objs-aarch64}
diff --git a/cat.cpp b/cat.cpp
@@ -27,6 +27,6 @@ int main(int argc, char* argv[])
 			return 1;
 		auto fd = *res;
 		cat(fd);
-		close(fd);
+		*close(fd);
 	}
 }
diff --git a/linux.hpp b/linux.hpp
@@ -103,7 +103,7 @@ enum class errno_t : int16_t
 };
 
 template <typename T>
-struct syscall_result
+struct [[nodiscard]] syscall_result
 {
 	explicit operator bool() const { return val >= 0; }
 	T operator*() const
diff --git a/ls.cpp b/ls.cpp
@@ -35,6 +35,6 @@ int main()
 			ios[n_io++] = span<char const>{e->d_name, len};
 			i += e->d_reclen;
 		}
-		write(stdout, ios);
+		*write(stdout, ios);
 	}
 }
diff --git a/paste.cpp b/paste.cpp
@@ -52,9 +52,9 @@ int main(int argc, char* argv[])
 					return 0;
 				if (c == '\n')
 					break;
-				write(stdout, &c, 1);
+				*write(stdout, &c, 1);
 			}
-			write(stdout, i + 1 == n_inputs ? "\n" : "\t", 1);
+			*write(stdout, i + 1 == n_inputs ? "\n" : "\t", 1);
 		}
 	}
 }
diff --git a/sleep.cpp b/sleep.cpp
@@ -34,5 +34,5 @@ int main(int argc, char* argv[])
 		return 1;
 
 	timespec duration{(time_t)n, 0};
-    nanosleep(duration, nullptr);
+    *nanosleep(duration, nullptr);
 }
diff --git a/test.cpp b/test.cpp
@@ -6,14 +6,14 @@ char bss[4];
 
 void text()
 {
-	write(stdout, {rodata, sizeof(rodata) - 1});
-	write(stdout, {data, sizeof(data) - 1});
+	*write(stdout, {rodata, sizeof(rodata) - 1});
+	*write(stdout, {data, sizeof(data) - 1});
 
 	bss[0] = 'b';
 	bss[1] = 's';
 	bss[2] = 's';
 	bss[3] = '\n';
-	write(stdout, bss);
+	*write(stdout, bss);
 }
 
 int main()