https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66319
Bug ID: 66319
Summary: [6 Regression] gcov-tool.c:84:65: error: invalid
conversion from 'int (*)(const c har*, const stat*,
int, FTW*)' to 'int (*)(const char*, const stat*, int,
FTW)'
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
CC: tsaunders at mozilla dot com
Target Milestone: ---
Host: hppa2.0w-hp-hpux11.11
Target: hppa2.0w-hp-hpux11.11
Build: hppa2.0w-hp-hpux11.11
g++ -std=c++98 -c -g -DIN_GCC -fno-exceptions -fno-rtti
-fasynchronous-unwi
nd-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -fno-common -Wno-error
-DHAVE_CONFIG_H -I. -I. -
I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include
-I../../gcc/gcc/../l
ibcpp/include -I/opt/gnu/gcc/gmp/include -I../../gcc/gcc/../libdecnumber
-I../.
./gcc/gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/gcc/../libbacktrace
-I. -I. -I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include
-I../../gcc/gcc/../libcpp/include -I/opt/gnu/gcc/gmp/include
-I../../gcc/gcc/../libdecnu
mber -I../../gcc/gcc/../libdecnumber/dpd -I../libdecnumber
-I../../gcc/gcc/../li
bbacktrace -o libgcov-util.o ../../gcc/gcc/../libgcc/libgcov-util.c
../../gcc/gcc/gcov-tool.c: In function 'int unlink_profile_dir(const char*)':
../../gcc/gcc/gcov-tool.c:84:65: error: invalid conversion from 'int (*)(const
c
har*, const stat*, int, FTW*)' to 'int (*)(const char*, const stat*, int, FTW)'
[-fpermissive]
return nftw(path, unlink_gcda_file, 64, FTW_DEPTH | FTW_PHYS);
^
In file included from ../../gcc/gcc/gcov-tool.c:39:0:
/usr/include/ftw.h:240:13: note: initializing argument 2 of 'int nftw(const
ch
ar*, int (*)(const char*, const stat*, int, FTW), int, int)'
inline int nftw(const char *a,int (*b)(const char *, const struct
^
make[3]: *** [gcov-tool.o] Error 1
The problem is function declaration of unlink_gcda_file doesn't match
declaration in In file included from ../../gcc/gcc/gcov-tool.c:39:0:
/usr/include/ftw.h:240. Whether the fourth argument is "struct FTW *"
or "struct FTW" depends on compilation defines:
#ifdef _INCLUDE_XOPEN_SOURCE_EXTENDED
/*
* Do Mapping of nftw() */
#if (defined(_XPG4_EXTENDED) && !defined(_INCLUDE_HPUX_SOURCE)) ||
defined(_XOPE
N_SOURCE_EXTENDED)
inline int nftw(const char *a,int (*b)(const char *,
const struct stat *, int, struct FTW *), int c, int d)
{return __nftw64(a,b,c,d);}
#else /* (defined(_XPG4_EXTENDED) && !defined(_INCLUDE_HPUX_SOURCE)) ||
defined(
_XOPEN_SOURCE_EXTENDED) */
inline int nftw(const char *a,int (*b)(const char *, const struct
stat *, int, struct FTW), int c, int d)
{return __nftw64(a,b,c,d);}
#endif /* (defined(_XPG4_EXTENDED) && !defined(_INCLUDE_HPUX_SOURCE)) ||
defined
(_XOPEN_SOURCE_EXTENDED) */
#endif /* _INCLUDE_XOPEN_SOURCE_EXTENDED */
Sadly, unlink_gcda_file doesn't use this argument.
Probably introduced by
2015-02-09 Trevor Saunders <tsaund...@mozilla.com>
PR gcov-profile/61889
* config.in: regenerate.
* configure.in: Likewise.
* configure.ac: Check for ftw.h.
* gcov-tool.c: Check for ftw.h before using nftw.
and my switch to building with gcc-5. There were numerous successful builds
after the above change was applied.
