http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60524
Bug ID: 60524 Summary: Typedef information bypassed in dwarf2 function parameter information when it is 'const' Product: gcc Version: 4.8.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: debug Assignee: unassigned at gcc dot gnu.org Reporter: wpk at culm dot net For following code: typedef unsigned char Bar[12]; void foo(Bar *bar) {} void fooconst(const Bar *bar) {} compiled with gcc -gdwarf-2 -c, readelf -wi shows the foolowing dwarf-2 info: For typedef Bar: <1><2d>: Abbrev Number: 2 (DW_TAG_typedef) <2e> DW_AT_name : Bar <32> DW_AT_decl_file : 1 <33> DW_AT_decl_line : 1 <34> DW_AT_type : <0x38> <1><38>: Abbrev Number: 3 (DW_TAG_array_type) <39> DW_AT_type : <0x4f> <3d> DW_AT_sibling : <0x48> For 'foo' function: <1><56>: Abbrev Number: 6 (DW_TAG_subprogram) (...) <58> DW_AT_name : foo (...) <2><78>: Abbrev Number: 7 (DW_TAG_formal_parameter) <79> DW_AT_name : bar (...) <7f> DW_AT_type : <0x87> (...) <1><87>: Abbrev Number: 8 (DW_TAG_pointer_type) <88> DW_AT_byte_size : 8 <89> DW_AT_type : <0x2d> This points to DW_TAG_typedef for 'Bar' But for 'fooconst': <1><8d>: Abbrev Number: 9 (DW_TAG_subprogram) (...) <8f> DW_AT_name : (indirect string, offset: 0x5c): fooconst (...) <2><af>: Abbrev Number: 7 (DW_TAG_formal_parameter) <b0> DW_AT_name : bar (..) <b6> DW_AT_type : <0xbe> (..) <1><be>: Abbrev Number: 8 (DW_TAG_pointer_type) <bf> DW_AT_byte_size : 8 <c0> DW_AT_type : <0x38> This points directly to unsigned char[12], completely bypassing typedef Bar info. GCC version info: Using built-in specs. COLLECT_GCC=/usr/bin/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/Linaro 4.8.1-10ubuntu9' --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 --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 4.8.1 (Ubuntu/Linaro 4.8.1-10ubuntu9)