From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; 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. --- gcc/testsuite/gcc.dg/memset-1.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/memset-1.c (limited to 'gcc/testsuite/gcc.dg/memset-1.c') diff --git a/gcc/testsuite/gcc.dg/memset-1.c b/gcc/testsuite/gcc.dg/memset-1.c new file mode 100644 index 000000000..677ae91bd --- /dev/null +++ b/gcc/testsuite/gcc.dg/memset-1.c @@ -0,0 +1,28 @@ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +typedef __SIZE_TYPE__ size_t; + +extern void warn_memset_zero_len (void) +__attribute__((__warning__ ("memset used with constant zero length parameter;" + " this could be due to transposed parameters"))); + +extern inline __attribute__((gnu_inline, always_inline, artificial)) void * +memset (void *dest, int ch, size_t len) +{ + if (__builtin_constant_p (len) && len == 0) + { + warn_memset_zero_len (); /* { dg-warning "memset used with constant zero" } */ + return dest; + } + return __builtin_memset (dest, ch, len); +} + +char buf[10]; + +int +main (void) +{ + memset (buf, sizeof (buf), 0); + return 0; +} -- cgit v1.2.3