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bug report
- To: gcc-bugs at gcc dot gnu dot org
- Subject: bug report
- From: mattryan at us dot ibm dot com
- Date: Tue, 14 Dec 1999 12:19:45 -0700
To whom it may concern:
I am having some compile warnings when I use STL deques (or containers
based on deques) in C++ applications. I am not sure if you were aware of
them but I wanted to at least make them known.
Operating system: AIX 4.2.1.0
G++ version: 2.95.2 (also, 2.91.66 and 2.91.60 had similar issues)
Compilation command: g++ -Wall -pedantic
Problem encountered:
Comparisons between signed and unsigned in
/usr/local/include/g++-3/stl_deque.h.
1. At line 1051, in the statement "if (__elems_before < (size() - __n) /
2)",
of method deque::iterator deque::erase()
__elems_before is of type difference_type, which is a typedef of
ptrdiff_t, which is a typedef of int
size() returns a size_type, which is a typedef of size_t, which is a
typedef of unsigned long
2. At line 1406, in the statement "if (__elemsbefore < __length / 2)",
of method void deque::_M_insert_aux()
__elemsbefore is of type difference_type, which is a typedef of
ptrdiff_t, which is a typedef of int
__length is of type size_type, which is a typedef of size_t, which is
a typedef of unsigned long
If this is not a bug, can you please advise as to the best method of
resolving the warnings?
Thank you for your tremendous efforts over the years.
-Matt Ryan
IBM Global Services C++ OOADD Software Engineer
RepliData UNIX Development Team
mattryan@us.ibm.com