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if-div.c: New file.

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2007-05-02  Eric Christopher  <echristo@apple.com>

	    * gcc.dg/cpp/if-div.c: New file.

2007-05-02  Eric Christopher  <echristo@apple.com>

	    * expr.c (num_div_op): Don't overflow if the result is
	    zero.

From-SVN: r124358
This commit is contained in:
Eric Christopher
2007-05-02 21:57:50 +00:00
parent fca35e1b54
commit 22a8a52d65
4 changed files with 23 additions and 7 deletions
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7
libcpp/expr.c
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@@ -91,7 +91,7 @@ interpret_float_suffix (const uchar *s, size_t len)
case 'l': case 'L': l++; break;
case 'i': case 'I':
case 'j': case 'J': i++; break;
case 'd': case 'D':
case 'd': case 'D':
/* Disallow fd, ld suffixes. */
if (d && (f || l))
return 0;
@@ -441,7 +441,7 @@ append_digit (cpp_num num, int digit, int base, size_t precision)
if (add_low + digit < add_low)
add_high++;
add_low += digit;
if (result.low + add_low < result.low)
add_high++;
if (result.high + add_high < result.high)
@@ -1527,7 +1527,8 @@ num_div_op (cpp_reader *pfile, cpp_num lhs, cpp_num rhs, enum cpp_ttype op)
{
if (negate)
result = num_negate (result, precision);
result.overflow = num_positive (result, precision) ^ !negate;
result.overflow = (num_positive (result, precision) ^ !negate
&& !num_zerop (result));
}
return result;