errors: don't use 'static inline' on varargs functions

This caused GCC 6.3.0 -Winline to complain:

    ../../../ext/libglnx/glnx-errors.h:169:1: warning: function
        ‘glnx_throw_errno_prefix’ can never be inlined because it uses
        variable argument lists [-Winline]
     glnx_throw_errno_prefix (GError **error, const char *fmt, ...)
     ^~~~~~~~~~~~~~~~~~~~~~~
    ../../../ext/libglnx/glnx-errors.h:169:1: warning: inlining failed
        in call to ‘glnx_throw_errno_prefix’: function not inlinable
        [-Winline]

2 files changed, 78 insertions, 66 deletions

diff --git a/glnx-errors.c b/glnx-errors.c
index 4800873..f350f30 100644
--- a/glnx-errors.c
+++ b/glnx-errors.c
@@ -23,6 +23,32 @@
 #include <glnx-backport-autocleanups.h>
 #include <glnx-errors.h>
 
+/* Set @error with G_IO_ERROR/G_IO_ERROR_FAILED.
+ *
+ * This function returns %FALSE so it can be used conveniently in a single
+ * statement:
+ *
+ * ```
+ *   if (strcmp (foo, "somevalue") != 0)
+ *     return glnx_throw (error, "key must be somevalue, not '%s'", foo);
+ * ```
+ */
+gboolean
+glnx_throw (GError    **error,
+            const char *fmt,
+            ...)
+{
+  if (error == NULL)
+    return FALSE;
+
+  va_list args;
+  va_start (args, fmt);
+  GError *new = g_error_new_valist (G_IO_ERROR, G_IO_ERROR_FAILED, fmt, args);
+  va_end (args);
+  g_propagate_error (error, g_steal_pointer (&new));
+  return FALSE;
+}
+
 void
 glnx_real_set_prefix_error_va (GError     *error,
                                const char *format,
@@ -39,6 +65,30 @@ glnx_real_set_prefix_error_va (GError     *error,
   error->message = g_string_free (g_steal_pointer (&buf), FALSE);
 }
 
+/* Prepend to @error's message by `$prefix: ` where `$prefix` is computed via
+ * printf @fmt. Returns %FALSE so it can be used conveniently in a single
+ * statement:
+ *
+ * ```
+ *   if (!function_that_fails (s, error))
+ *     return glnx_throw_prefix (error, "while handling '%s'", s);
+ * ```
+ * */
+gboolean
+glnx_prefix_error (GError    **error,
+                   const char *fmt,
+                   ...)
+{
+  if (error == NULL)
+    return FALSE;
+
+  va_list args;
+  va_start (args, fmt);
+  glnx_real_set_prefix_error_va (*error, fmt, args);
+  va_end (args);
+  return FALSE;
+}
+
 void
 glnx_real_set_prefix_error_from_errno_va (GError     **error,
                                           gint         errsv,
@@ -54,3 +104,28 @@ glnx_real_set_prefix_error_from_errno_va (GError     **error,
                        g_strerror (errsv));
   glnx_real_set_prefix_error_va (*error, format, args);
 }
+
+/* Set @error using the value of `$prefix: g_strerror (errno)` where `$prefix`
+ * is computed via printf @fmt.
+ *
+ * This function returns %FALSE so it can be used conveniently in a single
+ * statement:
+ *
+ * ```
+ *   return glnx_throw_errno_prefix (error, "unlinking %s", pathname);
+ * ```
+ */
+gboolean
+glnx_throw_errno_prefix (GError    **error,
+                         const char *fmt,
+                         ...)
+{
+  int errsv = errno;
+  va_list args;
+  va_start (args, fmt);
+  glnx_real_set_prefix_error_from_errno_va (error, errsv, fmt, args);
+  va_end (args);
+  /* See comment in glnx_throw_errno() about preserving errno */
+  errno = errsv;
+  return FALSE;
+}
diff --git a/glnx-errors.h b/glnx-errors.h
index 5a6fe19..cbe74a6 100644
--- a/glnx-errors.h
+++ b/glnx-errors.h
@@ -25,29 +25,7 @@
 
 G_BEGIN_DECLS
 
-/* Set @error with G_IO_ERROR/G_IO_ERROR_FAILED.
- *
- * This function returns %FALSE so it can be used conveniently in a single
- * statement:
- *
- * ```
- *   if (strcmp (foo, "somevalue") != 0)
- *     return glnx_throw (error, "key must be somevalue, not '%s'", foo);
- * ```
- */
-static inline gboolean G_GNUC_PRINTF (2,3)
-glnx_throw (GError **error, const char *fmt, ...)
-{
-  if (error == NULL)
-    return FALSE;
-
-  va_list args;
-  va_start (args, fmt);
-  GError *new = g_error_new_valist (G_IO_ERROR, G_IO_ERROR_FAILED, fmt, args);
-  va_end (args);
-  g_propagate_error (error, g_steal_pointer (&new));
-  return FALSE;
-}
+gboolean glnx_throw (GError **error, const char *fmt, ...) G_GNUC_PRINTF (2,3);
 
 /* Like `glnx_throw ()`, but returns %NULL. */
 #define glnx_null_throw(error, args...) \
@@ -58,27 +36,7 @@ void glnx_real_set_prefix_error_va (GError     *error,
                                     const char *format,
                                     va_list     args) G_GNUC_PRINTF (2,0);
 
-/* Prepend to @error's message by `$prefix: ` where `$prefix` is computed via
- * printf @fmt. Returns %FALSE so it can be used conveniently in a single
- * statement:
- *
- * ```
- *   if (!function_that_fails (s, error))
- *     return glnx_throw_prefix (error, "while handling '%s'", s);
- * ```
- * */
-static inline gboolean G_GNUC_PRINTF (2,3)
-glnx_prefix_error (GError **error, const char *fmt, ...)
-{
-  if (error == NULL)
-    return FALSE;
-
-  va_list args;
-  va_start (args, fmt);
-  glnx_real_set_prefix_error_va (*error, fmt, args);
-  va_end (args);
-  return FALSE;
-}
+gboolean glnx_prefix_error (GError **error, const char *fmt, ...) G_GNUC_PRINTF (2,3);
 
 /* Like `glnx_prefix_error ()`, but returns %NULL. */
 #define glnx_prefix_error_null(error, args...) \
@@ -155,28 +113,7 @@ void glnx_real_set_prefix_error_from_errno_va (GError     **error,
                                                const char  *format,
                                                va_list      args) G_GNUC_PRINTF (3,0);
 
-/* Set @error using the value of `$prefix: g_strerror (errno)` where `$prefix`
- * is computed via printf @fmt.
- *
- * This function returns %FALSE so it can be used conveniently in a single
- * statement:
- *
- * ```
- *   return glnx_throw_errno_prefix (error, "unlinking %s", pathname);
- * ```
- */
-static inline gboolean G_GNUC_PRINTF (2,3)
-glnx_throw_errno_prefix (GError **error, const char *fmt, ...)
-{
-  int errsv = errno;
-  va_list args;
-  va_start (args, fmt);
-  glnx_real_set_prefix_error_from_errno_va (error, errsv, fmt, args);
-  va_end (args);
-  /* See comment above about preserving errno */
-  errno = errsv;
-  return FALSE;
-}
+gboolean glnx_throw_errno_prefix (GError **error, const char *fmt, ...) G_GNUC_PRINTF (2,3);
 
 /* Like glnx_throw_errno_prefix(), but yields a NULL pointer. */
 #define glnx_null_throw_errno_prefix(error, args...) \