[Compaq C++ 7.1] floating point underflow warnings compiling library
--------------------------------------------------------------------
Key: STDCXX-565
URL: https://issues.apache.org/jira/browse/STDCXX-565
Project: C++ Standard Library
Issue Type: Bug
Components: Build
Affects Versions: trunk
Environment: Compaq (now HP) C++ 7.1, Tru64 UNIX
Reporter: Martin Sebor
Priority: Minor
With the latest trunk (but not with 4.1.3) we're getting the warnings below
when building the library. They suggest we might have a problem in the
definition of the macros.
gmake: Entering directory `$(BUILDDIR)/lib'
...
cxx -c -D_RWSTDDEBUG -D_RWSTD_SHARED_LIB -I$(TOPDIR)/include
-I$(BUILDDIR)/include -x cxx -nocxxstd -std strict_ansi_errors -g -w1
-msg_disable 450 -ptr repository.ti $(TOPDIR)/src/collate.cpp
cxx: Warning: $(TOPDIR)/include/limits, line 439:
underflow occurs in evaluating this expression
_RWSTD_STATIC_FUN (long double, (min), _RWSTD_LDBL_MIN)
----^
...
cxx -c -D_RWSTDDEBUG -D_RWSTD_SHARED_LIB -I$(TOPDIR)/include
-I$(BUILDDIR)/include -x cxx -nocxxstd -std strict_ansi_errors -g -w1
-msg_disable 450 -ptr repository.ti $(TOPDIR)/src/limits.cpp
cxx: Warning: $(TOPDIR)/include/limits, line 439:
underflow occurs in evaluating this expression
_RWSTD_STATIC_FUN (long double, (min), _RWSTD_LDBL_MIN)
----^
...
cxx -c -D_RWSTDDEBUG -D_RWSTD_SHARED_LIB -I$(TOPDIR)/include
-I$(BUILDDIR)/include -x cxx -nocxxstd -std strict_ansi_errors -g -w1
-msg_disable 450 -ptr repository.ti $(TOPDIR)/src/locale_core.cpp
cxx: Info: $(TOPDIR)/src/locale_core.cpp, line 110:
statement is unreachable
_RW::__rw_chararray pathname;
----------------------------^
...
cxx -c -D_RWSTDDEBUG -D_RWSTD_SHARED_LIB -I$(TOPDIR)/include
-I$(BUILDDIR)/include -x cxx -nocxxstd -std strict_ansi_errors -g -w1
-msg_disable 450 -ptr repository.ti $(TOPDIR)/src/num_get.cpp
cxx: Warning: $(TOPDIR)/src/num_get.cpp, line 761:
underflow occurs in evaluating this expression
__rw_validate (ld, LDbl (_RWSTD_LDBL_MIN),
-----------------------------------------^
cxx -c -D_RWSTDDEBUG -D_RWSTD_SHARED_LIB -I$(TOPDIR)/include
-I$(BUILDDIR)/include -x cxx -nocxxstd -std strict_ansi_errors -g -w1
-msg_disable 450 -ptr repository.ti $(TOPDIR)/src/num_put.cpp
cxx: Warning: $(TOPDIR)/include/limits, line 439:
underflow occurs in evaluating this expression
_RWSTD_STATIC_FUN (long double, (min), _RWSTD_LDBL_MIN)
----^
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