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re PR c/28299 (ICE with -Wmissing-prototypes)

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PR c/28299
	* c-decl.c (start_function): Don't try to process prototype
	information from old declaration that isn't a function.

testsuite:
	* gcc.dg/funcdef-var-1.c, gcc.dg/funcdef-var-2.c: New tests.
	* gcc.dg/pr20368-1.c, gcc.dg/pr20368-2.c, gcc.dg/pr20368-3.c:
	Expect extra diagnostics.

From-SVN: r116435
This commit is contained in:
Joseph Myers 2006-08-25 22:11:46 +01:00 committed by Joseph Myers
parent 02709c7f68
commit d8890adf28
8 changed files with 39 additions and 3 deletions

6
gcc/ChangeLog

@ -1,3 +1,9 @@
2006-08-25 Joseph S. Myers <joseph@codesourcery.com>
PR c/28299
* c-decl.c (start_function): Don't try to process prototype
information from old declaration that isn't a function.
2006-08-25 Jan Hubicka <jh@suse.cz>
PR target/28621

2
gcc/c-decl.c

@ -5991,6 +5991,8 @@ start_function (struct c_declspecs *declspecs, struct c_declarator *declarator,
/* If this definition isn't a prototype and we had a prototype declaration
before, copy the arg type info from that prototype. */
old_decl = lookup_name_in_scope (DECL_NAME (decl1), current_scope);
if (old_decl && TREE_CODE (old_decl) != FUNCTION_DECL)
old_decl = 0;
current_function_prototype_locus = UNKNOWN_LOCATION;
current_function_prototype_built_in = false;
current_function_prototype_arg_types = NULL_TREE;

7
gcc/testsuite/ChangeLog

@ -1,3 +1,10 @@
2006-08-25 Joseph S. Myers <joseph@codesourcery.com>
PR c/28299
* gcc.dg/funcdef-var-1.c, gcc.dg/funcdef-var-2.c: New tests.
* gcc.dg/pr20368-1.c, gcc.dg/pr20368-2.c, gcc.dg/pr20368-3.c:
Expect extra diagnostics.
2006-08-25 J"orn Rennecke <joern.rennecke@st.com>
gcc.dg/noncompile/pr16876.c: New test.

10
gcc/testsuite/gcc.dg/funcdef-var-1.c Normal file

@ -0,0 +1,10 @@
/* Test ICE on defining function with a name previously declared as a
nonfunction. Bug 28299 from Bernhard Fischer
<aldot@gcc.gnu.org>. */
/* { dg-do compile } */
/* { dg-options "-Wmissing-prototypes" } */
extern __typeof(foo) foo __asm__(""); /* { dg-error "undeclared" } */
/* { dg-error "previous declaration" "previous declaration" { target *-*-* } 7 } */
void *foo (void) {} /* { dg-error "redeclared as different kind of symbol" } */
/* { dg-warning "no previous prototype" "no previous prototype" { target *-*-* } 9 } */

11
gcc/testsuite/gcc.dg/funcdef-var-2.c Normal file

@ -0,0 +1,11 @@
/* Test ICE on defining function with a name previously declared as a
nonfunction. Bug 28299 from Bernhard Fischer <aldot@gcc.gnu.org>.
Reduced testcase from Volker Reichelt <reichelt@gcc.gnu.org>. */
/* { dg-do compile } */
/* { dg-options "-Wmissing-prototypes" } */
int foo;
/* { dg-error "previous declaration" "previous declaration" { target *-*-* } 8 } */
void foo () {} /* { dg-error "redeclared as different kind of symbol" } */
/* { dg-warning "no previous prototype" "no previous prototype" { target *-*-* } 10 } */

2
gcc/testsuite/gcc.dg/pr20368-1.c

@ -7,6 +7,6 @@ extern __typeof (f) g; /* { dg-error "error: 'f' undeclared here \\(not in a fun
int
f (x)
float x;
float x; /* { dg-warning "warning: function declaration isn't a prototype" } */
{
}

2
gcc/testsuite/gcc.dg/pr20368-2.c

@ -7,6 +7,6 @@ extern __typeof (f) g; /* { dg-error "error: 'f' undeclared here \\(not in a fun
int
f (x)
float x;
float x; /* { dg-warning "warning: no previous prototype for 'f'" } */
{
}

2
gcc/testsuite/gcc.dg/pr20368-3.c

@ -7,6 +7,6 @@ extern __typeof (f) g; /* { dg-error "error: 'f' undeclared here \\(not in a fun
int
f (x)
float x;
float x; /* { dg-warning "warning: no previous declaration for 'f'" } */
{
}