/*
Ryan Flynn
[EMAIL PROTECTED] (remove dashes)
Wed Apr 18 05:00:01 EDT 2008
*/
typedef int tym;
void a(tym *sym) { tym *x; } /* no problems here */
typedef int sym;
void b(sym *sym) { sym *y; } /* 'y undeclared'(?!) */
int main(void) { return 0; }
/*
Seems to be something wrong with types named 'sym'?
Error Message:
-------------------------------------------------------------
[EMAIL PROTECTED]:~/c$ gcc -W -Wall -save-temps wtf.c
wtf.c: In function 'a':
wtf.c:187: warning: unused variable 'x'
wtf.c: At top level:
wtf.c:187: warning: unused parameter 'sym'
wtf.c: In function 'b':
wtf.c:190: error: 'y' undeclared (first use in this function)
wtf.c:190: error: (Each undeclared identifier is reported only once
wtf.c:190: error: for each function it appears in.)
GCC Version:
-------------------------------------------------------------
[EMAIL PROTECTED]:~/c$ gcc --version | head -n 1
gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
Contents of wtf.i:
-------------------------------------------------------------
# 1 "wtf.c"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "wtf.c"
# 12 "wtf.c"
typedef int tym;
void a(tym *sym) { tym *x; }
typedef int sym;
void b(sym *sym) { sym *y; }
main() { return 0; }
More GCC info:
[EMAIL PROTECTED]:~/proj/lng$ gcc -dumpversion
4.1.2
[EMAIL PROTECTED]:~/proj/lng$ gcc -dumpmachine
i486-linux-gnu
[EMAIL PROTECTED]:~/proj/lng$ gcc -dumpspecs
*asm:
%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} %{m32:--32}
%{m64:--64}
*asm_debug:
%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}
*asm_final:
*asm_options:
%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}
*invoke_as:
%{!S:-o %|.s |
as %(asm_options) %|.s %A }
*cpp:
%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}
*cpp_options:
%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}
%{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*} %{undef}
%{save-temps:-fpch-preprocess}
*cpp_debug_options:
%{d*}
*cpp_unique_options:
%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}} %{!Q:-quiet}
%{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}
%{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}} %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}
%{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}} %{remap} %{g3:-dD} %{H} %C
%{D*&U*&A*} %{i*} %Z %i %{fmudflap:-D_MUDFLAP -include mf-runtime.h}
%{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h} %{E|M|MM:%W{o*}}
*trad_capable_cpp:
cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}
*cc1:
%(cc1_cpu) %{profile:-p}
*cc1_options:
%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}} %1
%{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*} %{c|S:%{o*:-auxbase-strip
%*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}} %{g*} %{O*} %{W*&pedantic*} %{w}
%{std*&ansi&trigraphs} %{v:-version} %{pg:-p} %{p} %{f*} %{undef}
%{Qn:-fno-ident} %{--help:--help} %{--target-help:--target-help}
%{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}} %{fsyntax-only:-o %j} %{-param*}
%{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}
%{coverage:-fprofile-arcs -ftest-coverage}
*cc1plus:
*link_gcc_c_sequence:
%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}
*link_ssp:
%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}
*endfile:
%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}
%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s
*link:
%{!static:--eh-frame-hdr} %{m64:-m elf_x86_64} %{!m64:-m elf_i386}
%{shared:-shared} %{!shared: %{!static: %{rdynamic:-export-dynamic}
%{!m64:%{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}}
%{m64:%{!dynamic-linker:-dynamic-linker /lib64/ld-linux-x86-64.so.2}}}
%{static:-static}}
*lib:
%{pthread:-lpthread} %{shared:-lc} %{!shared:%{mieee-fp:-lieee}
%{profile:-lc_p}%{!profile:-lc}}
*mfwrap:
%{static: %{fmudflap|fmudflapth: --wrap=malloc --wrap=free --wrap=calloc
--wrap=realloc --wrap=mmap --wrap=munmap --wrap=alloca} %{fmudflapth:
--wrap=pthread_create}} %{fmudflap|fmudflapth: --wrap=main}
*mflib:
%{fmudflap|fmudflapth: -export-dynamic}
*libgcc:
%{static|static-libgcc:-lgcc
-lgcc_eh}%{!static:%{!static-libgcc:%{!shared-libgcc:-lgcc --as-needed -lgcc_s
--no-as-needed}%{shared-libgcc:-lgcc_s%{!shared: -lgcc}}}}
*startfile:
%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} crti.o%s
%{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}
*switches_need_spaces:
*cross_compile:
on:
4.1.2
*multilib:
. !m64 !m32;64:../lib64 m64 !m32;32:../lib !m64 m32;
*multilib_defaults:
m32
*multilib_extra:
*multilib_matches:
m64 m64;m32 m32;
*multilib_exclusions:
*multilib_options:
m64/m32
*linker:
collect2
*link_libgcc:
%D
*md_exec_prefix:
*md_startfile_prefix:
*md_startfile_prefix_1:
*startfile_prefix_spec:
*sysroot_spec:
--sysroot=%R
*sysroot_suffix_spec:
*sysroot_hdrs_suffix_spec:
*cc1_cpu:
%{!mtune*: %{m386:mtune=i386 %n`-m386' is deprecated. Use `-march=i386' or
`-mtune=i386' instead.
} %{m486:-mtune=i486 %n`-m486' is deprecated. Use `-march=i486' or
`-mtune=i486' instead.
} %{mpentium:-mtune=pentium %n`-mpentium' is deprecated. Use `-march=pentium'
or `-mtune=pentium' instead.
} %{mpentiumpro:-mtune=pentiumpro %n`-mpentiumpro' is deprecated. Use
`-march=pentiumpro' or `-mtune=pentiumpro' instead.
} %{mcpu=*:-mtune=%* %n`-mcpu=' is deprecated. Use `-mtune=' or '-march='
instead.
}} %<mcpu=* %{mintel-syntax:-masm=intel %n`-mintel-syntax' is deprecated. Use
`-masm=intel' instead.
} %{mno-intel-syntax:-masm=att %n`-mno-intel-syntax' is deprecated. Use
`-masm=att' instead.
}
*link_emulation:
elf_i386
*dynamic_linker:
/lib/ld-linux.so.2
*link_command:
%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S: %(linker) %l %{pie:-pie} %X %{o*}
%{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t} %{u*} %{x} %{z} %{Z}
%{!A:%{!nostdlib:%{!nostartfiles:%S}}} %{static:} %{L*} %(mfwrap)
%(link_libgcc) %o %(mflib)
%{fprofile-arcs|fprofile-generate|coverage:-lgcov}
%{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}
%{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}
*/
--
Summary: typedef 'sym' usage results in 'undeclared'
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: parseerror at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35976
