GNU bug report logs -
#56798
Inconsistent locale settings between LT and non-LT $CC invocation
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bug#56798
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(Wed, 27 Jul 2022 16:08:02 GMT)
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Jan Engelhardt <jengelh <at> inai.de>
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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
Greetings.
This is a bug report primarily against libtool 2.4.7. automake is Cc'ed.
libtool seems to reset locales, causing compiler output to differ
between libtool-based invocations and those without libtool. This
becomes in particular visible when an automake project invokes both
compile strategies.
Observed
========
$ make V=0
CXX foo.o
foo.cpp: In function ‘int main()’:
foo.cpp:1:36: warning: declaration of ‘foo’ shadows a previous local [-Wshadow]
1 | int main() { auto foo = 42; { auto foo = 43; }}
CXXLD foo
CXX bar.lo
bar.cpp: In function 'int main()':
bar.cpp:1:36: warning: declaration of 'foo' shadows a previous local [-Wshadow]
1 | int main() { auto foo = 42; { auto foo = 43; }}
Expected to see
===============
Do not mix '' and ‘’. Stick to one variant.
Either libtool should stop resetting the locale, or perhaps
automake should start resetting the locale.
Testcase
========
foo.cpp
-------
int main() { auto foo = 42; { auto foo = 43; }}
Makefile.am
-----------
BUILT_SOURCES = bar.cpp
bar.cpp: foo.cpp
cp foo.cpp bar.cpp
AM_CXXFLAGS = -Wshadow
bin_PROGRAMS = foo
foo_SOURCES = foo.cpp
lib_LTLIBRARIES = libbar.la
libbar_la_SOURCES = bar.cpp
configure.ac
------------
AC_INIT([blah], [0])
AM_INIT_AUTOMAKE([1.10 foreign subdir-objects])
LT_INIT([disable-static])
AC_PROG_CXX
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
This bug report was last modified 2 years and 123 days ago.
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