obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 79 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/builtin-redefine.c b/gcc/testsuite/gcc.dg/builtin-redefine.c
new file mode 100644
index 000000000..1d0f29da8
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-redefine.c
@@ -0,0 +1,79 @@
+/* Test -Wno-builtin-macro-redefined warnings.  */
+
+/* { dg-do compile } */
+/* { dg-options "-Wno-builtin-macro-redefined -U__DATE__ -D__TIME__=X" } */
+
+/* Check date, time, and datestamp built-ins warnings may be suppressed.  */
+
+#if defined(__DATE__)
+#error "__DATE__ is defined, but should not be (-U command line error)"
+/* { dg-bogus "__DATE__ is defined" "" { target *-*-* } 9 } */
+#endif
+
+#if __TIME__ != X
+#error "__TIME__ is not defined as expected (-D command line error)"
+/* { dg-bogus "__TIME__ is not defined" "" { target *-*-* } 14 } */
+#endif
+
+#if !defined(__TIMESTAMP__)
+#error "__TIMESTAMP__ is not defined (built-in macro expectation error)"
+/* { dg-bogus "__TIMESTAMP__ is not defined" "" { target *-*-* } 19 } */
+#endif
+
+
+#undef __TIME__              /* Undefine while defined.  */
+#undef __TIME__              /* Undefine while already undefined.  */
+
+#define __TIME__ "X"         /* Define while undefined.  */
+#define __TIME__ "X"         /* Re-define while defined.  */
+
+#define __TIME__ "Y"         /* { dg-warning "\"__TIME__\" redefined" } */
+/* { dg-message "previous definition" "" { target *-*-* } 28 } */
+
+#undef __TIME__              /* Undefine while defined.  */
+
+
+#undef __DATE__              /* Undefine while already undefined.  */
+
+#define __DATE__ "X"         /* Define while undefined.  */
+#define __DATE__ "X"         /* Re-define while defined.  */
+
+#define __DATE__ "Y"         /* { dg-warning "\"__DATE__\" redefined" } */
+/* { dg-message "previous definition" "" { target *-*-* } 39 } */
+
+#undef __DATE__              /* Undefine while defined.  */
+
+
+#define __TIMESTAMP__ "X"    /* Define while already defined.  */
+#define __TIMESTAMP__ "X"    /* Re-define while defined.  */
+
+#define __TIMESTAMP__ "Y"    /* { dg-warning "\"__TIMESTAMP__\" redefined" } */
+/* { dg-message "previous definition" "" { target *-*-* } 48 } */
+
+#undef __TIMESTAMP__         /* Undefine while defined.  */
+
+
+/* Check other built-ins with warnings that may be suppressed.  */
+
+#if !defined(__FILE__) || !defined(__BASE_FILE__)
+#error "Expected built-in is not defined (built-in macro expectation error)"
+/* { dg-bogus "Expected built-in is not defined" "" { target *-*-* } 59 } */
+#endif
+
+#define __FILE__ "X"         /* Define while already defined.  */
+#define __BASE_FILE__ "X"    /* Define while already defined.  */
+
+
+/* Check selected built-ins not affected by warning suppression. */
+
+#if !defined(__LINE__) || !defined(__INCLUDE_LEVEL__) || !defined(__COUNTER__)
+#error "Expected built-in is not defined (built-in macro expectation error)"
+/* { dg-bogus "Expected built-in is not defined" "" { target *-*-* } 70 } */
+#endif
+
+#define __LINE__ 0           /* { dg-warning "\"__LINE__\" redef" } */
+#define __INCLUDE_LEVEL__ 0  /* { dg-warning "\"__INCLUDE_LEVEL__\" redef" } */
+#define __COUNTER__ 0        /* { dg-warning "\"__COUNTER__\" redef" } */
+
+
+int unused;  /* Silence `ISO C forbids an empty translation unit' warning.  */