Merge branch 'sverker/erl_interface/valgrind/OTP-15171' into maint

* sverker/erl_interface/valgrind/OTP-15171:
  erl_interface: Fix bug in ei_*receive_msg* functions
  erl_interface: Seal test case memory leaks
  erl_interface: Initialize erl_errno to zero
  erts: Remove use of VALGRIND_PRINTF_XML
  erl_interface: Add valgrind ability for test port programs
  erts: Fix benign bug in cerl for valgrind
  erts: Fix buggy calls to erts_sys_explicit_8bit_getenv

3 files changed, 6 insertions, 41 deletions

diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c
index 70474898b2..61090e2c47 100644
--- a/erts/emulator/beam/dist.c
+++ b/erts/emulator/beam/dist.c
@@ -1200,21 +1200,8 @@ erts_dsig_send_group_leader(ErtsDSigData *dsdp, Eterm leader, Eterm remote)
 #include <valgrind/valgrind.h>
 #include <valgrind/memcheck.h>
 
-#ifndef HAVE_VALGRIND_PRINTF_XML
-#define VALGRIND_PRINTF_XML VALGRIND_PRINTF
-#endif
-
 #  define PURIFY_MSG(msg)                                                    \
-    do {								     \
-	char buf__[1]; size_t bufsz__ = sizeof(buf__);			     \
-	if (erts_sys_explicit_8bit_getenv("VALGRIND_LOG_XML", buf__, &bufsz__) >= 0) { \
-	    VALGRIND_PRINTF_XML("<erlang_error_log>"			     \
-			    "%s, line %d: %s</erlang_error_log>\n",	     \
-			    __FILE__, __LINE__, msg);			     \
-	} else {							     \
-	    VALGRIND_PRINTF("%s, line %d: %s", __FILE__, __LINE__, msg);     \
-	}								     \
-    } while (0)
+    VALGRIND_PRINTF("%s, line %d: %s", __FILE__, __LINE__, msg)
 #else
 #  define PURIFY_MSG(msg)
 #endif
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 5789fa8e71..7fada0d548 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -2093,17 +2093,6 @@ current_stacktrace(ErtsHeapFactory *hfact, Process* rp,
     return res;
 }
 
-#if defined(VALGRIND)
-static int check_if_xml(void)
-{
-    char buf[1];
-    size_t bufsz = sizeof(buf);
-    return erts_sys_explicit_8bit_getenv("VALGRIND_LOG_XML", buf, &bufsz) >= 0;
-}
-#else
-#define check_if_xml() 0
-#endif
-
 /*
  * This function takes care of calls to erlang:system_info/1 when the argument
  * is a tuple.
@@ -2200,15 +2189,9 @@ info_1_tuple(Process* BIF_P,	/* Pointer to current process. */
 #endif
 	} else if (is_list(*tp)) {
 #if defined(PURIFY)
-#define ERTS_ERROR_CHECKER_PRINTF purify_printf
-#define ERTS_ERROR_CHECKER_PRINTF_XML purify_printf
+#  define ERTS_ERROR_CHECKER_PRINTF purify_printf
 #elif defined(VALGRIND)
-#define ERTS_ERROR_CHECKER_PRINTF VALGRIND_PRINTF
-#  ifndef HAVE_VALGRIND_PRINTF_XML
-#    define ERTS_ERROR_CHECKER_PRINTF_XML VALGRIND_PRINTF
-#  else
-#    define ERTS_ERROR_CHECKER_PRINTF_XML VALGRIND_PRINTF_XML
-#  endif
+#  define ERTS_ERROR_CHECKER_PRINTF VALGRIND_PRINTF
 #endif
 	    ErlDrvSizeT buf_size = 8*1024; /* Try with 8KB first */
 	    char *buf = erts_alloc(ERTS_ALC_T_TMP, buf_size);
@@ -2224,12 +2207,7 @@ info_1_tuple(Process* BIF_P,	/* Pointer to current process. */
 		ASSERT(r == buf_size - 1);
 	    }
 	    buf[buf_size - 1 - r] = '\0';
-	    if (check_if_xml()) {
-		ERTS_ERROR_CHECKER_PRINTF_XML("<erlang_info_log>"
-					      "%s</erlang_info_log>\n", buf);
-	    } else {
-		ERTS_ERROR_CHECKER_PRINTF("%s\n", buf);
-	    }
+            ERTS_ERROR_CHECKER_PRINTF("%s\n", buf);
 	    erts_free(ERTS_ALC_T_TMP, (void *) buf);
 	    BIF_RET(am_true);
 #undef ERTS_ERROR_CHECKER_PRINTF
diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c
index 189ca083d7..36579ffdb4 100644
--- a/erts/emulator/sys/unix/sys.c
+++ b/erts/emulator/sys/unix/sys.c
@@ -452,9 +452,9 @@ prepare_crash_dump(int secs)
 
     envsz = sizeof(env);
     i = erts_sys_explicit_8bit_getenv("ERL_CRASH_DUMP_NICE", env, &envsz);
-    if (i >= 0) {
+    if (i != 0) {
 	int nice_val;
-	nice_val = i != 1 ? 0 : atoi(env);
+	nice_val = (i != 1) ? 0 : atoi(env);
 	if (nice_val > 39) {
 	    nice_val = 39;
 	}