From 0b9af583a5c2d68085e88cece13952bf05dc4882 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Wed, 28 Oct 2015 18:50:20 +0000 Subject: Fix i386/x86_64 fesetenv SSE exception clearing (bug 19181). The i386 and x86_64 versions of fesetenv, when called with FE_DFL_ENV or FE_NOMASK_ENV as argument, do not clear SSE exceptions raised in MXCSR. These arguments should, like other fenv_t values, represent the whole of the floating-point state, so such exceptions should be cleared; this patch adds the required clearing. (Discovered while working on bug 16068.) Tested for x86_64 and x86. [BZ #19181] * sysdeps/i386/fpu/fesetenv.c (__fesetenv): Clear already-raised SSE exceptions when argument is FE_DFL_ENV or FE_NOMASK_ENV. * sysdeps/x86_64/fpu/fesetenv.c (__fesetenv): Likewise. * math/test-fenv-clear-main.c: New file. * math/test-fenv-clear.c: Likewise. * math/Makefile (tests): Add test-fenv-clear. * sysdeps/x86/fpu/test-fenv-clear-sse.c: New file. * sysdeps/x86/fpu/Makefile [$(subdir) = math] (tests): Add test-fenv-clear-sse. [$(subdir) = math] (CFLAGS-test-fenv-clear-sse.c): New variable. --- math/test-fenv-clear.c | 2 ++ 1 file changed, 2 insertions(+) create mode 100644 math/test-fenv-clear.c (limited to 'math/test-fenv-clear.c') diff --git a/math/test-fenv-clear.c b/math/test-fenv-clear.c new file mode 100644 index 0000000000..5559dd3936 --- /dev/null +++ b/math/test-fenv-clear.c @@ -0,0 +1,2 @@ +#define CHECK_CAN_TEST ((void) 0) +#include -- cgit v1.2.3