Especially mention that setting errno to EINVAL in "no conversion" case

is not portable.

Asked by:       joerg

2 files changed, 8 insertions, 4 deletions

diff --git a/lib/libc/stdlib/strtol.3 b/lib/libc/stdlib/strtol.3
index 63d1156..f814547 100644
--- a/lib/libc/stdlib/strtol.3
+++ b/lib/libc/stdlib/strtol.3
@@ -173,7 +173,8 @@ If no conversion could be performed, 0 is returned and
 the global variable
 .Va errno
 is set to
-.Er EINVAL .
+.Er EINVAL
+(the last feature is not portable across all platforms).
 If an overflow or underflow occurs,
 .Va errno
 is set to
@@ -193,7 +194,8 @@ to the following table.
 The value of
 .Fa base
 is not supported or
-no conversion could be performed.
+no conversion could be performed
+(the last feature is not portable across all platforms).
 .It Bq Er ERANGE
 The given string was out of range; the value converted has been clamped.
 .El
diff --git a/lib/libc/stdlib/strtoul.3 b/lib/libc/stdlib/strtoul.3
index d031630..3ac7438 100644
--- a/lib/libc/stdlib/strtoul.3
+++ b/lib/libc/stdlib/strtoul.3
@@ -192,14 +192,16 @@ If no conversion could be performed, 0 is returned and
 the global variable
 .Va errno
 is set to
-.Er EINVAL .
+.Er EINVAL
+(the last feature is not portable across all platforms).
 .Sh ERRORS
 .Bl -tag -width Er
 .It Bq Er EINVAL
 The value of
 .Fa base
 is not supported or
-no conversion could be performed.
+no conversion could be performed
+(the last feature is not portable across all platforms).
 .It Bq Er ERANGE
 The given string was out of range; the value converted has been clamped.
 .El