Hi! One of the supplied argument strings is unneccesarily long (c-sky, using basically the same code, fixed it to a shorter length) and this fixes overflow warnings, as GCC fails to deduce that the full 256 bytes for load_op[] are not used at all.
make[1]: Entering directory
'/var/lib/laminar/run/gcc-mcore-elf/38/toolchain-build/gcc'
[...]
/usr/lib/gcc-snapshot/bin/g++ -fno-PIE -c -g -O2 -DIN_GCC
-DCROSS_DIRECTORY_STRUCTURE -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -Wconditionally-supported
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I.
-I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include
-I../../gcc/gcc/../libcpp/include -I../../gcc/gcc/../libcody
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber -I../../gcc/gcc/../libbacktrace -o mcore.o -MT mcore.o -MMD
-MP -MF ./.deps/mcore.TPo ../../gcc/gcc/config/mcore/mcore.cc
../../gcc/gcc/config/mcore/mcore.cc: In function 'const char*
output_inline_const(machine_mode, rtx_def**)':
../../gcc/gcc/config/mcore/mcore.cc:1264:24: error: '
ixw ' directive writing 6 bytes into a region of size between 1 and
256 [-Werror=format-overflow=]
1264 | sprintf (buf, "%s\n\tixw\t%s,%s\t// %ld 0x%lx", load_op, dst_fmt,
dst_fmt, value, value);
| ^~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1264:21: note: using the range [0,
18446744073709551615] for directive argument
1264 | sprintf (buf, "%s\n\tixw\t%s,%s\t// %ld 0x%lx", load_op, dst_fmt,
dst_fmt, value, value);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1264:15: note: 'sprintf' output between 21
and 310 bytes into a destination of size 256
1264 | sprintf (buf, "%s\n\tixw\t%s,%s\t// %ld 0x%lx", load_op, dst_fmt,
dst_fmt, value, value);
|
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1261:24: error: '
ixh ' directive writing 6 bytes into a region of size between 1 and
256 [-Werror=format-overflow=]
1261 | sprintf (buf, "%s\n\tixh\t%s,%s\t// %ld 0x%lx", load_op, dst_fmt,
dst_fmt, value, value);
| ^~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1261:21: note: using the range [0,
18446744073709551615] for directive argument
1261 | sprintf (buf, "%s\n\tixh\t%s,%s\t// %ld 0x%lx", load_op, dst_fmt,
dst_fmt, value, value);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1261:15: note: 'sprintf' output between 21
and 310 bytes into a destination of size 256
1261 | sprintf (buf, "%s\n\tixh\t%s,%s\t// %ld 0x%lx", load_op, dst_fmt,
dst_fmt, value, value);
|
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1258:24: error: '
lsli ' directive writing 7 bytes into a region of size between 1 and
256 [-Werror=format-overflow=]
1258 | sprintf (buf, "%s\n\tlsli\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1258:21: note: using the range [0,
18446744073709551615] for directive argument
1258 | sprintf (buf, "%s\n\tlsli\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1258:15: note: 'sprintf' output between 22
and 311 bytes into a destination of size 256
1258 | sprintf (buf, "%s\n\tlsli\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
|
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1255:24: error: '
rotli ' directive writing 8 bytes into a region of size between 1 and
256 [-Werror=format-overflow=]
1255 | sprintf (buf, "%s\n\trotli\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1255:21: note: using the range [0,
18446744073709551615] for directive argument
1255 | sprintf (buf, "%s\n\trotli\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1255:15: note: 'sprintf' output between 23
and 312 bytes into a destination of size 256
1255 | sprintf (buf, "%s\n\trotli\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
|
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1252:24: error: '
bclri ' directive writing 8 bytes into a region of size between 1 and
256 [-Werror=format-overflow=]
1252 | sprintf (buf, "%s\n\tbclri\t%s,%%Q2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1252:21: note: using the range [0,
18446744073709551615] for directive argument
1252 | sprintf (buf, "%s\n\tbclri\t%s,%%Q2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1252:15: note: 'sprintf' output between 24
and 313 bytes into a destination of size 256
1252 | sprintf (buf, "%s\n\tbclri\t%s,%%Q2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
|
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1249:24: error: '
bseti ' directive writing 8 bytes into a region of size between 1 and
256 [-Werror=format-overflow=]
1249 | sprintf (buf, "%s\n\tbseti\t%s,%%P2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1249:21: note: using the range [0,
18446744073709551615] for directive argument
1249 | sprintf (buf, "%s\n\tbseti\t%s,%%P2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1249:15: note: 'sprintf' output between 24
and 313 bytes into a destination of size 256
1249 | sprintf (buf, "%s\n\tbseti\t%s,%%P2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
|
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1246:24: error: '
rsubi ' directive writing 8 bytes into a region of size between 1 and
256 [-Werror=format-overflow=]
1246 | sprintf (buf, "%s\n\trsubi\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1246:21: note: using the range [0,
18446744073709551615] for directive argument
1246 | sprintf (buf, "%s\n\trsubi\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1246:15: note: 'sprintf' output between 23
and 312 bytes into a destination of size 256
1246 | sprintf (buf, "%s\n\trsubi\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
|
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1242:24: error: '
subi ' directive writing 7 bytes into a region of size between 1 and
256 [-Werror=format-overflow=]
1242 | sprintf (buf, "%s\n\tsubi\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1242:21: note: using the range [0,
18446744073709551615] for directive argument
1242 | sprintf (buf, "%s\n\tsubi\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1242:15: note: 'sprintf' output between 22
and 311 bytes into a destination of size 256
1242 | sprintf (buf, "%s\n\tsubi\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
|
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1239:24: error: '
addi ' directive writing 7 bytes into a region of size between 1 and
256 [-Werror=format-overflow=]
1239 | sprintf (buf, "%s\n\taddi\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1239:21: note: using the range [0,
18446744073709551615] for directive argument
1239 | sprintf (buf, "%s\n\taddi\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1239:15: note: 'sprintf' output between 22
and 311 bytes into a destination of size 256
1239 | sprintf (buf, "%s\n\taddi\t%s,%%2\t// %ld 0x%lx", load_op,
dst_fmt, value, value);
|
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1236:24: error: '
not ' directive writing 6 bytes into a region of size between 1 and
256 [-Werror=format-overflow=]
1236 | sprintf (buf, "%s\n\tnot\t%s\t// %ld 0x%lx", load_op, dst_fmt,
value, value);
| ^~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1236:21: note: using the range [0,
18446744073709551615] for directive argument
1236 | sprintf (buf, "%s\n\tnot\t%s\t// %ld 0x%lx", load_op, dst_fmt,
value, value);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/gcc/config/mcore/mcore.cc:1236:15: note: 'sprintf' output between 18
and 307 bytes into a destination of size 256
1236 | sprintf (buf, "%s\n\tnot\t%s\t// %ld 0x%lx", load_op, dst_fmt,
value, value);
|
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors
make[1]: *** [Makefile:2461: mcore.o] Error 1
gcc/ChangeLog:
* config/mcore/mcore.cc (output_inline_const) Make buffer smaller to
silence overflow warnings later on.
diff --git a/gcc/config/mcore/mcore.cc b/gcc/config/mcore/mcore.cc
index 92e7f960f75..e933b03cdff 100644
--- a/gcc/config/mcore/mcore.cc
+++ b/gcc/config/mcore/mcore.cc
@@ -1182,7 +1182,7 @@ output_inline_const (machine_mode mode, rtx operands[])
int trick_no;
rtx out_operands[3];
char buf[256];
- char load_op[256];
+ char load_op[128];
const char *dst_fmt;
HOST_WIDE_INT value;
Ok?
Thanks,
Jan-Benedict
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