2010-02-19 Manuel López-Ibáñez <manu@gcc.gnu.org>

	PR 41779
	* c-common.c (conversion_warning): Remove widening conversions
	before checking the conversion of integers to reals.
testsuite/
	* c-c++-common/pr41779.c: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@156911 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 31 insertions, 0 deletions

diff --git a/gcc/testsuite/c-c++-common/pr41779.c b/gcc/testsuite/c-c++-common/pr41779.c
new file mode 100644
index 00000000000..f7153d9299e
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/pr41779.c
@@ -0,0 +1,31 @@
+/* PR41779: Wconversion cannot see throught real*integer promotions. */
+/* { dg-do compile } */
+/* { dg-skip-if "doubles are floats" { "avr-*-*" } { "*" } { "" } } */
+/* { dg-options "-std=c99 -Wconversion" { target c } } */
+/* { dg-options "-Wconversion" { target c++ } } */
+/* { dg-require-effective-target large_double } */
+
+float f(float x, unsigned short y)
+{
+  return x * y;
+}
+
+float f(float x, short y)
+{
+  return x * y;
+}
+
+float f(float x, char y)
+{
+  return x * y;
+}
+
+float f(float x, unsigned char y)
+{
+  return x * y;
+}
+
+float f(float x, int y)
+{
+  return x * y; /* { dg-warning "conversion" } */
+}