From da796524f8d64df3113e3c538adf285cf3ba041c Mon Sep 17 00:00:00 2001 From: Stefan Liebler Date: Thu, 19 Apr 2018 12:32:50 +0200 Subject: Use volatile global counters in test-tgmath.c. If build with -Os on s390x, the test-tgmath fails with: float functions not called often enough (-10000) Within compile_testf(), the counter (count_float) is saved before the complex functions are called. Afterwards the saved counter differs to the current-counter. But the tests with the complex functions do not increment count_float! Instead count_float is saved to a register before calling totalorder and totalordermag which both increment count_float. The compiler is allowed to do that as totalorderf and totalordermagf is declared with __attribute__ ((__const__)) in math/bits/mathcalls.h. Thus this patch adjusts the global counters to be volatile. Then count_float is saved after totalordermag. ChangeLog: * math/test-tgmath.c (count_double, count_float, count_ldouble, count_cdouble, count_cfloat, count_cldouble): Use volatile int. --- math/test-tgmath.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'math') diff --git a/math/test-tgmath.c b/math/test-tgmath.c index 6d8e7fde4e..2b0787cd4a 100644 --- a/math/test-tgmath.c +++ b/math/test-tgmath.c @@ -45,12 +45,12 @@ complex float fz; complex double dz; complex long double lz; -int count_double; -int count_float; -int count_ldouble; -int count_cdouble; -int count_cfloat; -int count_cldouble; +volatile int count_double; +volatile int count_float; +volatile int count_ldouble; +volatile int count_cdouble; +volatile int count_cfloat; +volatile int count_cldouble; #define NCALLS 134 #define NCALLS_INT 4 -- cgit v1.2.3-70-g09d2