Valgrind fails in CI

effekt/jvm/src/test/scala/effekt/LLVMTests.scala

@@ -22,11 +22,6 @@ class LLVMTests extends EffektTests {
   lazy val bugs: List[File] = List(
     // names not sanitized (even?)
     examplesDir / "pos" / "special_names.effekt",
-    // Jump to the invalid address stated on the next line
-    examplesDir / "benchmarks" / "input_output" / "dyck_one.effekt",
-    examplesDir / "benchmarks" / "input_output" / "number_matrix.effekt",
-    examplesDir / "benchmarks" / "input_output" / "word_count_ascii.effekt",
-    examplesDir / "benchmarks" / "input_output" / "word_count_utf8.effekt",
   )
 
   /**

effekt/jvm/src/test/scala/effekt/StdlibTests.scala

@@ -40,13 +40,6 @@ class StdlibLLVMTests extends StdlibTests {
   override def debug = sys.env.get("EFFEKT_DEBUG").nonEmpty
 
   override def ignored: List[File] = List(
-    // Syscall param write(buf) points to uninitialised byte(s)
-    examplesDir / "stdlib" / "io" / "filesystem" / "files.effekt",
-    examplesDir / "stdlib" / "io" / "filesystem" / "async_file_io.effekt",
-
-    // Conditional jump or move depends on uninitialised value(s)
-    examplesDir / "stdlib" / "io" / "filesystem" / "wordcount.effekt",
-
     // String comparison using `<`, `<=`, `>`, `>=` is not implemented yet on LLVM
     examplesDir / "stdlib" / "string" / "compare.effekt",
   )

examples/benchmarks/input_output/dyck_one.effekt

@@ -37,17 +37,19 @@ def size(tree: Tree): Int =
     }
   }
 
+extern def filename(): String =
+  js { "/tmp/dyck_one_js.txt" }
+  llvm { "/tmp/dyck_one_llvm.txt" }
+
 def run(n: Int): Int = {
   with on[IOError].panic
 
-  val filename = "/tmp/dyck_one.txt"
-
   val _ = {
-    with writeFile(filename)
+    with writeFile(filename())
     emitTree(n)
   }
 
-  with readFile(filename)
+  with readFile(filename())
   with returning::scanner[Byte, Int]
   attempt { readTree().size } { panic("Expected tree.")}
 }

examples/benchmarks/input_output/word_count_ascii.effekt

@@ -59,13 +59,15 @@ def countWords(): Output / read[Byte] = {
   Output(chars, words, lines)
 }
 
+extern def filename(): String =
+  js { "/tmp/word_count_ascii_js.txt" }
+  llvm { "/tmp/word_count_ascii_llvm.txt" }
+
 def run(n: Int) = {
   with on[IOError].panic;
 
-  val filename = "/tmp/word_count_ascii.txt"
-
   val _ = {
-    with writeFile(filename)
+    with writeFile(filename())
     with repeat(n)
     for[Int] { range(32, 127) } { c =>
       repeat(10) {
@@ -76,7 +78,7 @@ def run(n: Int) = {
   }
 
   val output = {
-    with readFile(filename)
+    with readFile(filename())
     countWords()
   }
 

libraries/llvm/bytearray.c

@@ -22,6 +22,7 @@ struct Pos c_bytearray_new(const Int size) {
   void *objPtr = malloc(sizeof(struct Header) + size);
   struct Header *headerPtr = objPtr;
   *headerPtr = (struct Header) { .rc = 0, .eraser = c_bytearray_erase_noop, };
+  memset(objPtr + sizeof(struct Header), 0, size);
   return (struct Pos) {
     .tag = size,
     .obj = objPtr,

libraries/llvm/io.c

@@ -177,11 +177,11 @@ void c_fs_close(Int file, Stack stack) {
 /**
  * Maps the libuv error code to a stable (platform independent) numeric value.
  *
- * Tries to use most common errno integer values, but introduces fresh values (> 200)
- * for those without common errno values.
+ * Tries to use most common error number integer values, but introduces fresh values (> 200)
+ * for those without common error number values.
  */
-Int c_error_number(Int errno) {
-    switch (errno) {
+Int c_error_number(Int error) {
+    switch (error) {
         case UV_EPERM:            return 1;    // EPERM
         case UV_ENOENT:           return 2;    // ENOENT
         case UV_ESRCH:            return 3;    // ESRCH