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, 35 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/warn/Wconversion3.C b/gcc/testsuite/g++.dg/warn/Wconversion3.C
new file mode 100644
index 000000000..24202b7d9
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wconversion3.C
@@ -0,0 +1,35 @@
+// PR c++/34198
+// { dg-do compile }
+// { dg-options "-O2 -Wconversion -Wsign-conversion" }
+
+signed char sc;
+unsigned char uc;
+short int ss;
+unsigned short int us;
+int si;
+unsigned int ui;
+
+void test1 (void)
+{
+  int a = uc & 0xff;
+  int b = sc & 0x7f;
+  int c = 0xff & uc;
+  int d = 0x7f & sc;
+  int e = uc & sc;
+  unsigned char f = (int) uc;
+  signed char g = (int) sc;
+  unsigned char h = (unsigned int) (short int) uc;
+  signed char i = (int) (unsigned short int) sc;	// { dg-warning "may alter its value" }
+  unsigned char j = (unsigned int) (short int) us;	// { dg-warning "may alter its value" }
+  signed char k = (int) (unsigned short int) ss;	// { dg-warning "may alter its value" }
+}
+
+void test2 (void)
+{
+  signed char a = (unsigned char) sc;		// { dg-warning "may change the sign" }
+  unsigned char b = (signed char) uc;		// { dg-warning "may change the sign" }
+  signed char c = (int) (unsigned char) sc;	// { dg-warning "may change the sign" }
+  unsigned char d = (int) (signed char) uc;	// { dg-warning "may change the sign" }
+  int e = (unsigned int) si;			// { dg-warning "may change the sign" }
+  unsigned int f = (int) ui;			// { dg-warning "may change the sign" }
+}