Most -Wimplicit-int warnings were unconditionally disabled for system
headers. Only missing types for parameters in old-style function
definitions resulted in warnings. This is inconsistent with the
treatment of other permerrors, which are active in system headers.
gcc/c/
* c-decl.cc (grokdeclarator): Do not skip -Wimplicit-int
warnings or errors in system headers.
gcc/testsuite/
* gcc.dg/permerror-system.c: Expect all -Wimplicit-int
permerrors.
---
gcc/c/c-decl.cc | 2 +-
gcc/testsuite/gcc.dg/permerror-system.c | 5 +++++
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/gcc/c/c-decl.cc b/gcc/c/c-decl.cc
index 893e24f7dc6..d16958113a8 100644
--- a/gcc/c/c-decl.cc
+++ b/gcc/c/c-decl.cc
@@ -6845,7 +6845,7 @@ grokdeclarator (const struct c_declarator *declarator,
/* Diagnose defaulting to "int". */
- if (declspecs->default_int_p && !in_system_header_at (input_location))
+ if (declspecs->default_int_p)
{
/* Issue a warning if this is an ISO C 99 program or if
-Wreturn-type and this is a function, or if -Wimplicit;
diff --git a/gcc/testsuite/gcc.dg/permerror-system.c
b/gcc/testsuite/gcc.dg/permerror-system.c
index 60c65ffc1d4..cad48c93f90 100644
--- a/gcc/testsuite/gcc.dg/permerror-system.c
+++ b/gcc/testsuite/gcc.dg/permerror-system.c
@@ -10,7 +10,12 @@
/* { dg-error "'f1' \\\[-Wimplicit-function-declaration\\\]" "" { target *-*-*
} 10 } */
+/* { dg-error "'implicit_int_1' \\\[-Wimplicit-int\\\]" "" { target *-*-* } 13
} */
+/* { dg-error "'implicit_int_2' \\\[-Wimplicit-int\\\]" "" { target *-*-* } 14
} */
+/* { dg-error "'implicit_int_3' \\\[-Wimplicit-int\\]" "" { target *-*-* } 15
} */
+/* { dg-error "return type defaults to 'int' \\\[-Wimplicit-int\\\]" "" {
target *-*-* } 16 } */
/* { dg-error "type of 'i' defaults to 'int' \\\[-Wimplicit-int\\\]" "" {
target *-*-*} 16 } */
+/* { dg-error "type defaults to 'int' in type name \\\[-Wimplicit-int\\\]" ""
{ target *-*-* } 19 } */
/* { dg-error "pointer/integer type mismatch in conditional expression
\\\[-Wint-conversion\\\]" "" { target *-*-* } 29 } */
/* { dg-error "pointer/integer type mismatch in conditional expression
\\\[-Wint-conversion\\\]" "" { target *-*-* } 30 } */
--
2.42.0
