[Bug tree-optimization/103089] -Wmaybe-uninitialized -O2 false positive
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103089 xantares09 at hotmail dot com changed: What|Removed |Added Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED --- Comment #3 from xantares09 at hotmail dot com --- my bad, thanks for the reply
[Bug tree-optimization/103089] -Wmaybe-uninitialized -O2 false positive
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103089 --- Comment #2 from xantares09 at hotmail dot com --- indeed, I assumed both were positive, I guess there's no bug then
[Bug c/103089] New: -Wmaybe-uninitialized -O2 false positive
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103089 Bug ID: 103089 Summary: -Wmaybe-uninitialized -O2 false positive Product: gcc Version: 11.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: xantares09 at hotmail dot com Target Milestone: --- Created attachment 51736 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51736=edit minimal reproducer on this example gcc 11.2, 11.1 gives a false positive for -Wmaybe-uninitialized (at O2 only) $ gcc -c -O2 -Wmaybe-uninitialized ks.c ks.c: In function ‘DurbinMatrix’: ks.c:21:18: warning: ‘*H_67 + _146’ may be used uninitialized [-Wmaybe-uninitialized] 21 | H[(m - 1) * m] += (2 * h - 1 > 0 ? pow (2 * h - 1, (double) m) : 0); | ^~ ks.c:21:18: warning: ‘*H_67 + _146’ may be used uninitialized [-Wmaybe-uninitialized] we can see the whole H array is initialized because H[i * m + j] covers the whole (0, m*m( range: H = (double *) malloc ((m * m) * sizeof (double)); for (i = 0; i < m; i++) for (j = 0; j < m; j++) if (i - j + 1 < 0) H[i * m + j] = 0; else H[i * m + j] = 1;
[Bug c++/87729] Please include -Woverloaded-virtual in -Wall
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87729 --- Comment #5 from xantares09 at hotmail dot com --- still there with 10.1, see attached patch
[Bug c++/87729] Please include -Woverloaded-virtual in -Wall
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87729 xantares09 at hotmail dot com changed: What|Removed |Added CC||xantares09 at hotmail dot com --- Comment #4 from xantares09 at hotmail dot com --- Created attachment 49021 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49021=edit enable -Woverloaded-virtual by -Wall
[Bug libbacktrace/95012] [mingw/gcc10.1] mmapio.c:69:14: error: implicit declaration of function ‘getpagesize’
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95012 --- Comment #3 from xantares09 at hotmail dot com --- mingw does not define getpagesize as far as I can tell with: $ grep -nr getpagesize /usr/i686-w64-mingw32/include/ but gcc seems to detect it (9.x and 10.x): checking for getpagesize... (cached) yes maybe it relies on its own provided getpagesize function: gcc/system.h:479:#if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE gcc/system.h:480:extern int getpagesize (void);
[Bug libbacktrace/95012] [mingw/gcc10.1] mmapio.c:69:14: error: implicit declaration of function ‘getpagesize’
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95012 --- Comment #1 from xantares09 at hotmail dot com --- the full compilation script can be seen here: https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=mingw-w64-gcc
[Bug libbacktrace/95012] New: [mingw/gcc10.1] mmapio.c:69:14: error: implicit declaration of function ‘getpagesize’
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95012 Bug ID: 95012 Summary: [mingw/gcc10.1] mmapio.c:69:14: error: implicit declaration of function ‘getpagesize’ Product: gcc Version: 10.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libbacktrace Assignee: unassigned at gcc dot gnu.org Reporter: xantares09 at hotmail dot com CC: ian at gcc dot gnu.org Target Milestone: --- when updating archlinux mingw-w64-gcc from 9.3.0 to 10.1.0 I noticed that libbacktrace fails to build because of an extra "-Werror" present during the compilation of libbacktrace that was not here for previous versions: libtool: compile: /home/xantares/projects/aur-scripts/mingw-w64-gcc/src/build-i686-w64-mingw32/./gcc/xgcc -B/home/xantares/projects/aur-scripts/mingw-w64-gcc/src/build-i686-w64-mingw32/./gcc/ -L/usr/i686-w64-mingw32/lib -L/usr/mingw/lib -isystem /usr/i686-w64-mingw32/include -isystem /usr/mingw/include -B/usr/i686-w64-mingw32/bin/ -B/usr/i686-w64-mingw32/lib/ -isystem /usr/i686-w64-mingw32/include -isystem /usr/i686-w64-mingw32/sys-include -DHAVE_CONFIG_H -I. -I/home/xantares/projects/aur-scripts/mingw-w64-gcc/src/gcc/libbacktrace -I /home/xantares/projects/aur-scripts/mingw-w64-gcc/src/gcc/libbacktrace/../include -I /home/xantares/projects/aur-scripts/mingw-w64-gcc/src/gcc/libbacktrace/../libgcc -I ../libgcc -funwind-tables -frandom-seed=mmapio.lo -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wcast-qual -Werror -g -O2 -c /home/xantares/projects/aur-scripts/mingw-w64-gcc/src/gcc/libbacktrace/mmapio.c -DDLL_EXPORT -DPIC -o .libs/mmapio.o /home/xantares/projects/aur-scripts/mingw-w64-gcc/src/gcc/libbacktrace/mmapio.c: In function ‘backtrace_get_view’: /home/xantares/projects/aur-scripts/mingw-w64-gcc/src/gcc/libbacktrace/mmapio.c:69:14: error: implicit declaration of function ‘getpagesize’ [-Werror=implicit-function-declaration]
[Bug tree-optimization/88156] ftree-vrp elides sign condition on mingw
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88156 xantares09 at hotmail dot com changed: What|Removed |Added Resolution|FIXED |INVALID --- Comment #8 from xantares09 at hotmail dot com --- Ok, thank you.
[Bug tree-optimization/88156] ftree-vrp elides sign condition on mingw
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88156 xantares09 at hotmail dot com changed: What|Removed |Added Resolution|INVALID |FIXED --- Comment #7 from xantares09 at hotmail dot com --- Ok, thank you.
[Bug tree-optimization/88156] ftree-vrp elides sign condition on mingw
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88156 --- Comment #4 from xantares09 at hotmail dot com --- I found this in stddef.h: #ifndef __WCHAR_TYPE__ /* wchar_t is unsigned short for compatibility with MS runtime */ #define __WCHAR_TYPE__ unsigned short #endif
[Bug tree-optimization/88156] ftree-vrp elides sign condition on mingw
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88156 --- Comment #3 from xantares09 at hotmail dot com --- Add yes, your C testcase leads to the same results.
[Bug tree-optimization/88156] ftree-vrp elides sign condition on mingw
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88156
--- Comment #2 from xantares09 at hotmail dot com ---
Thanks for the quick reply.
On mingw __WCHAR_TYPE__ expands to short unsigned int:
$ x86_64-w64-mingw32-gcc -E main.c
...
# 3 "main.cxx"
int string_hash(const short unsigned int* data) {
On x86_64-linux it expands to int:
$ gcc -E main.c
...
# 3 "main.c"
int string_hash(const int* data) {
[Bug tree-optimization/88156] New: ftree-vrp elides sign condition on mingw
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88156
Bug ID: 88156
Summary: ftree-vrp elides sign condition on mingw
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: xantares09 at hotmail dot com
Target Milestone: ---
Using mingw/gcc 8.2.0, at O2 level, ftree-vrp seems to elide the if(h<0)
condition in the following example:
#include
int string_hash(const wchar_t* data) {
int h = 0;
if (!data){
return 0;
}
while (*data != 0) {
h = (h * 7) ^ *data;
++data;
}
if (h < 0) {
h = -h;
}
return h;
}
int main(int argc, char *argv[])
{
int hash = string_hash(L"PROBABILIT");
std::cout << "hash= "<
[Bug rtl-optimization/85638] [8/9 regression] build failure for Ada runtime with SJLJ exceptions on x86
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85638 --- Comment #15 from xantares09 at hotmail dot com --- The build goes through with your second patch too, thanks a lot.
[Bug ada/85638] [8/9 regression] build failure for Ada runtime with SJLJ exceptions on x86
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85638 --- Comment #11 from xantares09 at hotmail dot com --- Oh, ok
[Bug ada/85638] [8/9 regression] build failure for Ada runtime with SJLJ exceptions on x86
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85638 --- Comment #9 from xantares09 at hotmail dot com --- Yes, I applied your patch, now the build fails with another error: gcc -c -I./ -I/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/adalib/../adainclude -I/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/adalib -I. -I/home/xantares/projects/aur-scripts/mingw-w64-gcc/src/gcc/gcc/ada -g -O2 -W -Wall -gnatpg -gnata -I- /home/xantares/projects/aur-scripts/mingw-w64-gcc/src/gcc-8.1.0/gcc/ada/fmap.adb fmap.adb:304:18: "Null_FD" is undefined gnatmake: "/home/xantares/projects/aur-scripts/mingw-w64-gcc/src/gcc-8.1.0/gcc/ada/fmap.adb" compilation error
[Bug ada/85638] gcc 8.1.0 fails to build ada language for target i686-w64-mingw32
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85638 --- Comment #2 from xantares09 at hotmail dot com --- Created attachment 44061 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44061=edit ./src/gcc-build-i686-w64-mingw32/gcc/ada/rts/a-calend.adb
[Bug ada/85638] gcc 8.1.0 fails to build ada language for target i686-w64-mingw32
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85638 --- Comment #1 from xantares09 at hotmail dot com --- Created attachment 44060 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44060=edit ??
[Bug ada/85638] New: gcc 8.1.0 fails to build ada language for target i686-w64-mingw32
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85638 Bug ID: 85638 Summary: gcc 8.1.0 fails to build ada language for target i686-w64-mingw32 Product: gcc Version: 8.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: ada Assignee: unassigned at gcc dot gnu.org Reporter: xantares09 at hotmail dot com Target Milestone: --- Created attachment 44059 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44059=edit error log Summary === Archlinux, x86_64, trying to compile mingw-w64-gcc 8.1.0: +===GNAT BUG DETECTED==+ | 8.1.0 (i686-w64-mingw32) GCC error: | | in find_rarely_executed_basic_blocks_and_crossing_edges, at | | bb-reorder.c:1673| | Error detected around a-calend.adb:801:11| See error.log for more details Build goes through if I disable ada. Binutils is 2.30, mingw crt/winpthreads 5.0.3, installed mingw-w64-gcc is 7.3.0 Compilation options === configure --prefix=/usr --libexecdir=/usr/lib \ --target=i686-w64-mingw32 \ --enable-languages=c,lto,c++,objc,obj-c++,fortran,ada \ --enable-shared --enable-static \ --enable-threads=posix --enable-fully-dynamic-string --enable-libstdcxx-time=yes \ --with-system-zlib --enable-cloog-backend=isl \ --enable-lto --disable-dw2-exceptions --enable-libgomp \ --disable-multilib --enable-checking=release
[Bug libgomp/67141] wrong libgomp mutex initialisation order
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67141 --- Comment #9 from xantares09 at hotmail dot com --- I can confirm the patch from gcc-5 branch applied on top of 5.2.0 fixes the mingw problem. Thanks a lot. xan.
[Bug libgomp/67141] wrong libgomp mutex initialisation order
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67141 --- Comment #2 from xantares09 at hotmail dot com --- Note that you'll need mingw-w64 4.0.4, not 4.0.2 to reproduce, I used gcc 5.2.0.
[Bug libgomp/67141] wrong libgomp mutex initialisation order
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67141 xantares09 at hotmail dot com changed: What|Removed |Added CC||xantares09 at hotmail dot com --- Comment #1 from xantares09 at hotmail dot com --- Created attachment 36169 -- https://gcc.gnu.org/bugzilla/attachment.cgi?id=36169action=edit call initialize_env before goacc_host_init I can reproduce here: err:module:attach_process_dlls libgomp-1.dll failed to initialize, aborting Mattias is totally right: if i assign a higher initialization priority to env.c:initialize_env than oacc-host.c:goacc_host_init the dll is correctly initialized the patch may not be ok, but you get the idea
