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re PR c/63480 (-Wmissing-field-initializers should not warn about intentionally empty initializers (or that should be a separate option)) 

PR c/63480
	* c-typeck.c (pop_init_level): Don't warn about initializing
	with { }.

	* gcc.dg/pr63480.c: New test.

From-SVN: r216031
This commit is contained in:
Marek Polacek 2014-10-09 08:25:50 +00:00 committed by Marek Polacek
parent 77ed39034f
commit 84937de246
4 changed files with 31 additions and 2 deletions
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6
gcc/c/ChangeLog
View File

@ -1,3 +1,9 @@
2014-10-09 Marek Polacek <polacek@redhat.com>
PR c/63480
* c-typeck.c (pop_init_level): Don't warn about initializing
with { }.
2014-10-07 Marek Polacek <polacek@redhat.com>
PR c/59717

8
gcc/c/c-typeck.c
View File

@ -7436,7 +7436,11 @@ pop_init_level (location_t loc, int implicit,
}
}
if (vec_safe_length (constructor_elements) != 1)
/* Initialization with { } counts as zeroinit. */
if (vec_safe_length (constructor_elements) == 0)
constructor_zeroinit = 1;
/* If the constructor has more than one element, it can't be { 0 }. */
else if (vec_safe_length (constructor_elements) != 1)
constructor_zeroinit = 0;
/* Warn when some structs are initialized with direct aggregation. */
@ -7463,7 +7467,7 @@ pop_init_level (location_t loc, int implicit,
/* Do not warn if this level of the initializer uses member
designators; it is likely to be deliberate. */
&& !constructor_designated
/* Do not warn about initializing with ` = {0}'. */
/* Do not warn about initializing with { 0 } or with { }. */
&& !constructor_zeroinit)
{
if (warning_at (input_location, OPT_Wmissing_field_initializers,

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2014-10-09 Marek Polacek <polacek@redhat.com>
PR c/63480
* gcc.dg/pr63480.c: New test.
2014-10-09 Richard Biener <rguenther@suse.de>
PR tree-optimization/63445

14
gcc/testsuite/gcc.dg/pr63480.c Normal file
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@ -0,0 +1,14 @@
/* PR c/63480 */
/* { dg-do compile } */
/* { dg-options "-Wmissing-field-initializers" } */
/* Test that we don't warn about initializing with { }. */
struct S { int a, b, c; } s = { };
void
foo (void)
{
struct S s = { };
struct S s2 = (struct S){ };
}