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Gcc emit overflows warnings on VAX when you try to use HUGE_VAL. Make these

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warning supressable if -Wno-overflow is given.
This commit is contained in:
matt 2012-02-05 17:43:47 +00:00
parent c1538b0e12
commit 2c2478331f
1 changed files with 18 additions and 15 deletions
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33
external/gpl3/gcc/dist/gcc/c-lex.c vendored
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@ -718,22 +718,25 @@ interpret_float (const cpp_token *token, unsigned int flags)
outside the range of representable values of its type. Since we
have __builtin_inf* to produce an infinity, this is now a
mandatory pedwarn if the target does not support infinities. */
if (REAL_VALUE_ISINF (real)
|| (const_type != type && REAL_VALUE_ISINF (real_trunc)))
if (warn_overflow)
{
if (!MODE_HAS_INFINITIES (TYPE_MODE (type)))
pedwarn (input_location, 0, "floating constant exceeds range of %qT", type);
else
warning (OPT_Woverflow, "floating constant exceeds range of %qT", type);
}
/* We also give a warning if the value underflows. */
else if (REAL_VALUES_EQUAL (real, dconst0)
|| (const_type != type && REAL_VALUES_EQUAL (real_trunc, dconst0)))
{
REAL_VALUE_TYPE realvoidmode;
int overflow = real_from_string (&realvoidmode, copy);
if (overflow < 0 || !REAL_VALUES_EQUAL (realvoidmode, dconst0))
warning (OPT_Woverflow, "floating constant truncated to zero");
if (REAL_VALUE_ISINF (real)
|| (const_type != type && REAL_VALUE_ISINF (real_trunc)))
{
if (!MODE_HAS_INFINITIES (TYPE_MODE (type)))
pedwarn (input_location, 0, "floating constant exceeds range of %qT", type);
else
warning (OPT_Woverflow, "floating constant exceeds range of %qT", type);
}
/* We also give a warning if the value underflows. */
else if (REAL_VALUES_EQUAL (real, dconst0)
|| (const_type != type && REAL_VALUES_EQUAL (real_trunc, dconst0)))
{
REAL_VALUE_TYPE realvoidmode;
int overflow = real_from_string (&realvoidmode, copy);
if (overflow < 0 || !REAL_VALUES_EQUAL (realvoidmode, dconst0))
warning (OPT_Woverflow, "floating constant truncated to zero");
}
}
/* Create a node with determined type and value. */