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Merge branch '2913-error-warning' into 'main'

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gerror: Emit a critical warning if the message format is NULL

Closes #2913

See merge request GNOME/glib!3286
This commit is contained in:
Emmanuele Bassi 2023-02-22 01:35:24 +00:00
commit 23d28b9d6e
2 changed files with 28 additions and 18 deletions
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8
glib/gerror.c
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@ -755,13 +755,14 @@ g_error_new_valist (GQuark domain,
const gchar *format,
va_list args)
{
g_return_val_if_fail (format != NULL, NULL);
/* Historically, GError allowed this (although it was never meant to work),
* and it has significant use in the wild, which g_return_val_if_fail
* would break. It should maybe g_return_val_if_fail in GLib 4.
* (GNOME#660371, GNOME#560482)
*/
g_warn_if_fail (domain != 0);
g_warn_if_fail (format != NULL);
return g_error_new_steal (domain, code, g_strdup_vprintf (format, args), NULL);
}
@ -887,9 +888,10 @@ g_error_copy (const GError *error)
ErrorDomainInfo info;
g_return_val_if_fail (error != NULL, NULL);
/* See g_error_new_valist for why these don't return */
g_return_val_if_fail (error->message != NULL, NULL);
/* See g_error_new_valist for why this doesn’t return */
g_warn_if_fail (error->domain != 0);
g_warn_if_fail (error->message != NULL);
copy = g_error_new_steal (error->domain,
error->code,

38
glib/tests/error.c
View File

@ -129,17 +129,6 @@ test_new_valist_invalid_va (gpointer dummy,
* g_error_new_valist() with a %NULL format will crash on FreeBSD as its
* implementation of vasprintf() is less forgiving than Linux’s. That’s
* fine: it’s a programmer error in either case. */
const struct
{
GQuark domain;
const gchar *format;
}
tests[] =
{
{ G_MARKUP_ERROR, NULL },
{ 0, "Message" },
};
gsize i;
g_test_summary ("Test that g_error_new_valist() rejects invalid input");
@ -149,13 +138,32 @@ test_new_valist_invalid_va (gpointer dummy,
return;
}
for (i = 0; i < G_N_ELEMENTS (tests); i++)
{
GError *error = NULL;
va_list ap;
va_start (ap, dummy);
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat-nonliteral"
#pragma GCC diagnostic ignored "-Wformat-extra-args"
g_test_expect_message (G_LOG_DOMAIN,
G_LOG_LEVEL_CRITICAL,
"*g_error_new_valist: assertion 'format != NULL' failed*");
error = g_error_new_valist (G_MARKUP_ERROR, G_MARKUP_ERROR_EMPTY, NULL, ap);
g_test_assert_expected_messages ();
g_assert_null (error);
#pragma GCC diagnostic pop
va_end (ap);
}
{
GError *error = NULL, *error_copy = NULL;
va_list ap;
g_test_message ("Test %" G_GSIZE_FORMAT, i);
va_start (ap, dummy);
#pragma GCC diagnostic push
@ -164,7 +172,7 @@ test_new_valist_invalid_va (gpointer dummy,
g_test_expect_message (G_LOG_DOMAIN,
G_LOG_LEVEL_WARNING,
"*g_error_new_valist: runtime check failed*");
error = g_error_new_valist (tests[i].domain, G_MARKUP_ERROR_EMPTY, tests[i].format, ap);
error = g_error_new_valist (0, G_MARKUP_ERROR_EMPTY, "Message", ap);
g_test_assert_expected_messages ();
g_assert_nonnull (error);