+2009-04-01 Janis Johnson <janis187@us.ibm.com>
+
+ PR c/29027
+ * c-lex.c (interpret_float): Default (no suffix) is double.
+
2009-04-1 Xinliang David Li <davidxl@google.com>
* config/i386/i386.c (legitimate_constant_p): Recognize
char *copy;
size_t copylen;
+ /* Default (no suffix) is double. */
+ if (flags & CPP_N_DEFAULT)
+ {
+ flags ^= CPP_N_DEFAULT;
+ flags |= CPP_N_MEDIUM;
+ }
+
/* Decode _Fract and _Accum. */
if (flags & CPP_N_FRACT || flags & CPP_N_ACCUM)
return interpret_fixed (token, flags);
2009-04-01 Janis Johnson <janis187@us.ibm.com>
+ PR c/39027
+ * gcc.dg/fltconst-1.c: Don't error for use of d or D in suffix.
+ * gcc.dg/fltconst-2.c: New test.
+ * gcc.dg/fltconst-double-pedantic-1.c: New test.
+ * gcc.dg/fltconst-double-pedantic-2.c: New test.
+
PR c/33466
* gcc.dg/cpp/pr33466.c: New test.
* gcc.dg/dfp/pr33466.c: New test.
double a = 1.ld; /* { dg-error "12:invalid suffix" } */
double b = 1.fd; /* { dg-error "12:invalid suffix" } */
-double c = 1.di; /* { dg-error "12:invalid suffix" } */
-double d = 1.dj; /* { dg-error "12:invalid suffix" } */
-double e = 1.id; /* { dg-error "12:invalid suffix" } */
-double f = 1.jd; /* { dg-error "12:invalid suffix" } */
+double c = 1.di;
+double d = 1.dj;
+double e = 1.id;
+double f = 1.jd;
double g = 1.ddd; /* { dg-error "12:invalid suffix" } */
double h = 1.ldd; /* { dg-error "12:invalid suffix" } */
double i = 1.dld; /* { dg-error "12:invalid suffix" } */
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-std=gnu99" } */
+
+/* Check that d or D is recognized as a float constant suffix. */
+
+double d = 0.5d;
+double D = 0.5D;
+
+/* Check that d or D is recognized in a hexadecimal floating constant. */
+
+double hd1 = 0x1.8p1d;
+double hd2 = 0x1.p+1D;
+double hd3 = 0x0.8p-1d;
+
+/* Check that imaginary constant suffixes are still recognized with
+ only i, I, j, or J. */
+
+double i = 0.5i;
+double I = 0.5I;
+double j = 0.5j;
+double J = 0.5J;
+
+/* Check that imaginary constant suffixes are allowed with d or D. */
+
+double di = 0.5di;
+double dI = 0.5dI;
+double Di = 0.5Di;
+double DI = 0.5DI;
+double dj = 0.5dj;
+double dJ = 0.5dJ;
+double Dj = 0.5Dj;
+double DJ = 0.5DJ;
+double id = 0.5id;
+double iD = 0.5iD;
+double Id = 0.5Id;
+double ID = 0.5ID;
+double jd = 0.5jd;
+double jD = 0.5jD;
+double Jd = 0.5Jd;
+double JD = 0.5JD;
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-std=c99 -pedantic" } */
+
+double a = 1.d; /* { dg-warning "double constant" } */
+double b = 1.D; /* { dg-warning "double constant" } */
+double c = 1.1e+2d; /* { dg-warning "double constant" } */
+
+double d = 1.di; /* { dg-warning "imaginary constants" } */
+double e = 1.dj; /* { dg-warning "imaginary constants" } */
+double f = 1.id; /* { dg-warning "imaginary constants" } */
+double g = 1.jd; /* { dg-warning "imaginary constants" } */
+
+double h = 0x1.5p1d; /* { dg-warning "double constant" } */
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-std=c99 -pedantic-errors" } */
+
+double a = 1.d; /* { dg-error "double constant" } */
+double b = 1.D; /* { dg-error "double constant" } */
+double c = 1.1e+2d; /* { dg-error "double constant" } */
+
+double d = 1.di; /* { dg-error "imaginary constants" } */
+double e = 1.dj; /* { dg-error "imaginary constants" } */
+double f = 1.id; /* { dg-error "imaginary constants" } */
+double g = 1.jd; /* { dg-error "imaginary constants" } */
+
+double h = 0x1.5p1d; /* { dg-error "double constant" } */
2009-04-01 Janis Johnson <janis187@us.ibm.com>
+ PR c/39027
+ * include/cpplib.h (CPP_N_DEFAULT): Define.
+ * expr.c (interpret_float_suffix): Recognize d or D for double,
+ return new value for default.
+ (cpp_classify_number): Issue pedwarn for use of d or D in suffix.
+
PR c/33466
* expr.c (interpret_float_suffix): Reject invalid suffix that uses
letters from decimal float and fixed-point suffixes.
interpret_float_suffix (const uchar *s, size_t len)
{
size_t flags;
- size_t f, l, w, q, i;
+ size_t f, d, l, w, q, i;
flags = 0;
- f = l = w = q = i = 0;
+ f = d = l = w = q = i = 0;
/* Process decimal float suffixes, which are two letters starting
with d or D. Order and case are significant. */
case 'l': return (!uppercase ? (CPP_N_DFLOAT | CPP_N_LARGE) : 0); break;
case 'L': return (uppercase ? (CPP_N_DFLOAT | CPP_N_LARGE) : 0); break;
default:
- return 0;
+ /* Additional two-character suffixes beginning with D are not
+ for decimal float constants. */
+ break;
}
}
switch (s[len])
{
case 'f': case 'F': f++; break;
+ case 'd': case 'D': d++; break;
case 'l': case 'L': l++; break;
case 'w': case 'W': w++; break;
case 'q': case 'Q': q++; break;
return 0;
}
- if (f + l + w + q > 1 || i > 1)
+ if (f + d + l + w + q > 1 || i > 1)
return 0;
return ((i ? CPP_N_IMAGINARY : 0)
| (f ? CPP_N_SMALL :
+ d ? CPP_N_MEDIUM :
l ? CPP_N_LARGE :
w ? CPP_N_MD_W :
- q ? CPP_N_MD_Q : CPP_N_MEDIUM));
+ q ? CPP_N_MD_Q : CPP_N_DEFAULT));
}
/* Subroutine of cpp_classify_number. S points to an integer suffix
"traditional C rejects the \"%.*s\" suffix",
(int) (limit - str), str);
+ /* A suffix for double is a GCC extension via decimal float support.
+ If the suffix also specifies an imaginary value we'll catch that
+ later. */
+ if ((result == CPP_N_MEDIUM) && CPP_PEDANTIC (pfile))
+ cpp_error (pfile, CPP_DL_PEDWARN,
+ "suffix for double constant is a GCC extension");
+
/* Radix must be 10 for decimal floats. */
if ((result & CPP_N_DFLOAT) && radix != 10)
{
#define CPP_N_UNSIGNED 0x1000 /* Properties. */
#define CPP_N_IMAGINARY 0x2000
#define CPP_N_DFLOAT 0x4000
+#define CPP_N_DEFAULT 0x8000
#define CPP_N_FRACT 0x100000 /* Fract types. */
#define CPP_N_ACCUM 0x200000 /* Accum types. */