diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/c-c++-common/Wfloat-conversion.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/c-c++-common/Wfloat-conversion.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/c-c++-common/Wfloat-conversion.c b/gcc-4.9/gcc/testsuite/c-c++-common/Wfloat-conversion.c new file mode 100644 index 000000000..e87275590 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/c-c++-common/Wfloat-conversion.c @@ -0,0 +1,58 @@ +/* Test for diagnostics for Wconversion for floating-point. */ + +/* { dg-do compile } */ +/* { dg-options "-std=c99 -Wfloat-conversion" { target c } } */ +/* { dg-options "-Wfloat-conversion" { target c++ } } */ +/* { dg-require-effective-target large_double } */ +/* { dg-require-effective-target int32plus } */ +/* { dg-require-effective-target double64plus } */ +#include <limits.h> + +float vfloat; +double vdouble; +long double vlongdouble; +int bar; + +void fsi (signed int x); +void fui (unsigned int x); +void ffloat (float f); +void fdouble (double d); +void flongdouble (long double ld); + +void h (void) +{ + unsigned int ui = 3; + int si = 3; + unsigned char uc = 3; + signed char sc = 3; + float f = 0; + double d = 0; + long double ld = 0; + + ffloat (3.1); /* { dg-warning "conversion to 'float' alters 'double' constant value" } */ + vfloat = 3.1; /* { dg-warning "conversion to 'float' alters 'double' constant value" } */ + ffloat (3.1L); /* { dg-warning "conversion to 'float' alters 'long double' constant value" } */ + vfloat = 3.1L; /* { dg-warning "conversion to 'float' alters 'long double' constant value" } */ + fdouble (3.1L); /* { dg-warning "conversion to 'double' alters 'long double' constant value" "" { target large_long_double } } */ + vdouble = 3.1L; /* { dg-warning "conversion to 'double' alters 'long double' constant value" "" { target large_long_double } } */ + ffloat (vdouble); /* { dg-warning "conversion to 'float' from 'double' may alter its value" } */ + vfloat = vdouble; /* { dg-warning "conversion to 'float' from 'double' may alter its value" } */ + ffloat (vlongdouble); /* { dg-warning "conversion to 'float' from 'long double' may alter its value" } */ + vfloat = vlongdouble; /* { dg-warning "conversion to 'float' from 'long double' may alter its value" } */ + fdouble (vlongdouble); /* { dg-warning "conversion to 'double' from 'long double' may alter its value" "" { target large_long_double } } */ + vdouble = vlongdouble; /* { dg-warning "conversion to 'double' from 'long double' may alter its value" "" { target large_long_double } } */ + + fsi (3.1f); /* { dg-warning "conversion to 'int' alters 'float' constant value" } */ + si = 3.1f; /* { dg-warning "conversion to 'int' alters 'float' constant value" } */ + fsi (3.1); /* { dg-warning "conversion to 'int' alters 'double' constant value" } */ + si = 3.1; /* { dg-warning "conversion to 'int' alters 'double' constant value" } */ + fsi (d); /* { dg-warning "conversion to 'int' from 'double' may alter its value" } */ + si = d; /* { dg-warning "conversion to 'int' from 'double' may alter its value" } */ + ffloat (INT_MAX); /* { dg-warning "conversion to 'float' alters 'int' constant value" } */ + vfloat = INT_MAX; /* { dg-warning "conversion to 'float' alters 'int' constant value" } */ + ffloat (16777217); /* { dg-warning "conversion to 'float' alters 'int' constant value" } */ + vfloat = 16777217; /* { dg-warning "conversion to 'float' alters 'int' constant value" } */ + + sc = bar != 0 ? 2.1 : 10; /* { dg-warning "conversion to 'signed char' alters 'double' constant value" } */ + uc = bar != 0 ? 2.1 : 10; /* { dg-warning "conversion to 'unsigned char' alters 'double' constant value" } */ +} |