re PR c/26494 (-pedantic-errors can be overridden by -W*)

2007-02-15  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

	PR c/26494
	* doc/invoke.texi (Warning Options): Remove
	-Werror-implicit-function-declaration.
	(Wimplicit-function-declaration): Update description.
	* opts.c (common_handle_option): Move handling of -Werror=* to...
	(enable_warning_as_error): ...here.
	* opts.h (enable_warning_as_error): Declare.
	* c-decl.c (implicit_decl_warning): Unless
	-Wno-implicit-function-declaration is given, emit a pedwarn if
	-std=c99 or emit a warning if -Wimplicit-function-declaration.
	* c.opt (Wimplicit-function-declaration): Replace
	mesg_implicit_function_declaration with
	warn_implicit_function_declaration.
	* c-opts.c (c_common_handle_option):
	-Werror-implicit-function-declaration is exactly equal as
	-Werror=implicit-function-declaration.
	(set_Wimplicit): Replace mesg_implicit_function_declaration with
	warn_implicit_function_declaration.
	(c_common_post_options): -Wimplict-function-declaration is enabled
	by default by -std=c99, otherwise is disabled by default.
	* c-objc-common.c (c_objc_common_init): Remove flawed logic.
testsuite/
	* gcc.dg/Wimplicit-function-declaration-c89.c: New.
	* gcc.dg/Wimplicit-function-declaration-c89-default.c: New.
	* gcc.dg/Wimplicit-function-declaration-c89-pedantic.c: New.
	* gcc.dg/Wimplicit-function-declaration-c99.c: New.
	* gcc.dg/Wimplicit-function-declaration-c99-pedantic.c: New.
	* gcc.dg/Werror-implicit-function-declaration.c: New.

From-SVN: r122017

7 files changed, 52 insertions, 0 deletions

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index b876518..67076ea 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,15 @@
 2007-02-15  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
 
+	PR c/26494
+	* gcc.dg/Wimplicit-function-declaration-c89.c: New.
+	* gcc.dg/Wimplicit-function-declaration-c89-default.c: New.
+	* gcc.dg/Wimplicit-function-declaration-c89-pedantic.c: New.
+	* gcc.dg/Wimplicit-function-declaration-c99.c: New.
+	* gcc.dg/Wimplicit-function-declaration-c99-pedantic.c: New.
+	* gcc.dg/Werror-implicit-function-declaration.c: New.
+
+2007-02-15  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
+
 	PR c++/28943
 	* g++.dg/warn/pr28943.C: New.
 
diff --git a/gcc/testsuite/gcc.dg/Werror-implicit-function-declaration.c b/gcc/testsuite/gcc.dg/Werror-implicit-function-declaration.c
new file mode 100644
index 0000000..f8f0f81d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Werror-implicit-function-declaration.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-options "-std=c89 -Werror-implicit-function-declaration" } */
+
+void f(void) 
+{ 
+  puts("Hello"); /* { dg-error "error: implicit declaration of function" } */
+}
diff --git a/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c89-default.c b/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c89-default.c
new file mode 100644
index 0000000..c725ffa
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c89-default.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-options "-std=c89" } */
+
+void f(void) 
+{ 
+  puts("Hello"); /* { dg-bogus "warning: implicit declaration of function" } */
+}
diff --git a/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c89-pedantic.c b/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c89-pedantic.c
new file mode 100644
index 0000000..f476e6a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c89-pedantic.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-options "-std=c89 -pedantic-errors -Wimplicit-function-declaration" } */
+
+void f(void) 
+{ 
+  puts("Hello"); /* { dg-warning "warning: implicit declaration of function" } */
+}
diff --git a/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c89.c b/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c89.c
new file mode 100644
index 0000000..6f2916d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c89.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-options "-std=c89 -Wimplicit-function-declaration" } */
+
+void f(void) 
+{ 
+  puts("Hello"); /* { dg-warning "warning: implicit declaration of function" } */
+}
diff --git a/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c99-pedantic.c b/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c99-pedantic.c
new file mode 100644
index 0000000..6ea5eed
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c99-pedantic.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-options "-std=c99 -pedantic-errors -Wall" } */
+
+void f(void) 
+{ 
+  puts("Hello"); /* { dg-error "error: implicit declaration of function" } */
+}
diff --git a/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c99.c b/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c99.c
new file mode 100644
index 0000000..004fc5a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c99.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-options "-std=c99" } */
+
+void f(void) 
+{ 
+  puts("Hello"); /* { dg-warning "warning: implicit declaration of function" } */
+}