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Use volatile global counters in test-tgmath.c.

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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.
This commit is contained in:
Stefan Liebler 2018-04-19 12:32:50 +02:00
parent f55a4fdefb
commit da796524f8
2 changed files with 12 additions and 6 deletions
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6
ChangeLog
View File

@ -1,3 +1,9 @@
2018-04-19 Stefan Liebler <stli@linux.vnet.ibm.com>
* math/test-tgmath.c (count_double, count_float,
count_ldouble, count_cdouble, count_cfloat,
count_cldouble): Use volatile int.
2018-04-19 Samuel Thibault <samuel.thibault@ens-lyon.org>
* sysdeps/mach/hurd/i386/Makefile [$(subdir) = conform]

12
math/test-tgmath.c
View File

@ -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