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if-div.c: New file. 

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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4
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2007-05-02 Eric Christopher <echristo@apple.com>
* gcc.dg/cpp/if-div.c: New file.
2007-05-02 Tom Tromey <tromey@redhat.com>
PR preprocessor/28709:

6
gcc/testsuite/gcc.dg/cpp/if-div.c Normal file
View File

@ -0,0 +1,6 @@
/* { dg-do preprocess } */
/* Test that this preprocesses without error. */
#if (-1)/2
#endif

5
libcpp/ChangeLog
View File

@ -1,3 +1,8 @@
2007-05-02 Eric Christopher <echristo@apple.com>
* expr.c (num_div_op): Don't overflow if the result is
zero.
2007-05-02 Tom Tromey <tromey@redhat.com>
PR preprocessor/28709:

3
libcpp/expr.c
View File

@ -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;