diff options
| author | Joseph Myers <joseph@codesourcery.com> | 2015-10-28 18:50:20 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-10-28 18:50:20 +0000 |
| commit | 0b9af583a5c2d68085e88cece13952bf05dc4882 (patch) | |
| tree | efc4a66a9b018447c371749d91cf8a5b8508754f /math/test-fenv-clear.c | |
| parent | eae6c382bdca2e7ac582a69d56c9c228b678ee67 (diff) | |
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.
Diffstat (limited to 'math/test-fenv-clear.c')
| -rw-r--r-- | math/test-fenv-clear.c | 2 |
1 files changed, 2 insertions, 0 deletions
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 <test-fenv-clear-main.c> |