https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61435
Bug ID: 61435
Summary: -imacros switch breaks warning/error reporting
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: oliver at bway dot net
SUMMARY: -imacros switch breaks warning/error reporting
When the -imacros switch is used, and the source file has errors or warnings,
the file name in the warning message gets lost and is replaced with
<command-line>.
GCC VERSION:
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.2-19ubuntu1'
--with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.8 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap
--enable-plugin --with-system-zlib --disable-browser-plugin
--enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
COMMAND LINE WHICH TRIGGERS BUG:
g++ -imacros validinclude.h causeerror.cpp
COMPILER OUTPUT (the output itself is the bug):
<command-line>:0:1: error: ‘blah’ does not name a type
The source file causeerror.cpp has the one line:
blah
The valid file validinclude.h has the one line:
#define one 1
HERE IS THE .ii file:
# 1 "causeerror.cpp"
# 1 "<command-line>"
# 1 "./validinclude.h" 1
# 1 "<command-line>" 2
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 1 "causeerror.cpp"
# 1 "<command-line>" 2
blah
