Compiling the following program causes gcc to crash when using the -std=gnu99
option, but there is no crash without this option. I need to use this option
because the program uses language features such as loop initial declarations
which require passing -std=c99 or -std=gnu99 option.
=================
typedef unsigned long long uint64_t;
int test(uint64_t result, uint64_t multiplier) {
if (result > (18446744073709551615) / multiplier)
return 1;
else
return 2;
}
=================
$ /usr/local/gcc-4.4.0/bin/gcc -v -save-temps -std=gnu99 -c bug.c
Using built-in specs.
Target: powerpc-ibm-aix4.3.3.0
Configured with: /mnt/gcc-4.4.0/configure --prefix=/usr/local/gcc-4.4.0
--enable-languages=c,c++ --disable-nls --disable-shared --disable-multilib
--with-float=hard --with-cpu=powerpc
Thread model: aix
gcc version 4.4.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=gnu99' '-c' '-mcpu=powerpc'
'-mhard-float'
/usr/local/gcc-4.4.0/libexec/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/cc1 -E -quiet -v
bug.c -mcpu=powerpc -mhard-float -std=gnu99 -fpch-preprocess -o bug.i
ignoring nonexistent directory
"/usr/local/gcc-4.4.0/lib/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/../../../../powerpc-ibm-aix4.3.3.0/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/local/gcc-4.4.0/include
/usr/local/gcc-4.4.0/lib/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/include
/usr/local/gcc-4.4.0/lib/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/include-fixed
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=gnu99' '-c' '-mcpu=powerpc'
'-mhard-float'
/usr/local/gcc-4.4.0/libexec/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/cc1
-fpreprocessed bug.i -quiet -dumpbase bug.c -mcpu=powerpc -mhard-float -auxbase
bug -std=gnu99 -version -o bug.s
GNU C (GCC) version 4.4.0 (powerpc-ibm-aix4.3.3.0)
compiled by GNU C version 4.4.0, GMP version 4.3.1, MPFR version 2.4.1.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 069cba7204d31344321186fb361b8726
bug.c:3:17: warning: integer constant is so large that it is unsigned
bug.c: In function 'test':
bug.c:3: internal compiler error: in gen_lowpart_general, at rtlhooks.c:59
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ ls -l
total 24
-rw-r--r-- 1 vvv noc 175 May 19 17:51 bug.c
-rw-r--r-- 1 vvv noc 237 May 19 17:56 bug.i
-rw-r--r-- 1 vvv noc 57 May 19 17:56 bug.s
$ cat bug.i
# 1 "bug.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "bug.c"
typedef unsigned long long uint64_t;
int test(uint64_t result, uint64_t multiplier) {
if (result > (18446744073709551615) / multiplier)
return 1;
else
return 2;
}
$ cat bug.s
.file "bug.c"
.csect .text[PR]
.toc
.csect .text[PR]
Compiling the same file without the -std=gnu99 option works:
$ /usr/local/gcc-4.4.0/bin/gcc -v -save-temps -c bug.c
Using built-in specs.
Target: powerpc-ibm-aix4.3.3.0
Configured with: /mnt/gcc-4.4.0/configure --prefix=/usr/local/gcc-4.4.0
--enable-languages=c,c++ --disable-nls --disable-shared --disable-multilib
--with-float=hard --with-cpu=powerpc
Thread model: aix
gcc version 4.4.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-mcpu=powerpc' '-mhard-float'
/usr/local/gcc-4.4.0/libexec/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/cc1 -E -quiet -v
bug.c -mcpu=powerpc -mhard-float -fpch-preprocess -o bug.i
ignoring nonexistent directory
"/usr/local/gcc-4.4.0/lib/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/../../../../powerpc-ibm-aix4.3.3.0/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/local/gcc-4.4.0/include
/usr/local/gcc-4.4.0/lib/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/include
/usr/local/gcc-4.4.0/lib/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/include-fixed
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-mcpu=powerpc' '-mhard-float'
/usr/local/gcc-4.4.0/libexec/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/cc1
-fpreprocessed bug.i -quiet -dumpbase bug.c -mcpu=powerpc -mhard-float -auxbase
bug -version -o bug.s
GNU C (GCC) version 4.4.0 (powerpc-ibm-aix4.3.3.0)
compiled by GNU C version 4.4.0, GMP version 4.3.1, MPFR version 2.4.1.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 069cba7204d31344321186fb361b8726
bug.c:3:17: warning: integer constant is so large that it is unsigned
bug.c: In function 'test':
bug.c:3: warning: this decimal constant is unsigned only in ISO C90
bug.c:3: warning: integer constant is too large for 'long' type
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-mcpu=powerpc' '-mhard-float'
as -u -mppc -o bug.o bug.s
COMPILER_PATH=/usr/local/gcc-4.4.0/libexec/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/:/usr/local/gcc-4.4.0/libexec/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/:/usr/local/gcc-4.4.0/libexec/gcc/powerpc-ibm-aix4.3.3.0/:/usr/local/gcc-4.4.0/lib/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/:/usr/local/gcc-4.4.0/lib/gcc/powerpc-ibm-aix4.3.3.0/
LIBRARY_PATH=/usr/local/gcc-4.4.0/lib/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/:/usr/local/gcc-4.4.0/lib/gcc/powerpc-ibm-aix4.3.3.0/4.4.0/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-mcpu=powerpc' '-mhard-float'
$ ls -l
total 40
-rw-r--r-- 1 vvv noc 175 May 19 17:51 bug.c
-rw-r--r-- 1 vvv noc 237 May 19 18:27 bug.i
-rw-r--r-- 1 vvv noc 639 May 19 18:27 bug.o
-rw-r--r-- 1 vvv noc 764 May 19 18:27 bug.s
$ cat bug.s
.file "bug.c"
.csect .text[PR]
.toc
.csect .text[PR]
.align 2
.globl test
.globl .test
.csect test[DS]
test:
.long .test, TOC[tc0], 0
.csect .text[PR]
.test:
mflr 0
stw 0,8(1)
stw 31,-4(1)
stwu 1,-96(1)
mr 31,1
stw 3,56(31)
stw 4,60(31)
stw 5,64(31)
stw 6,68(31)
li 3,-1
li 4,-1
lwz 5,64(31)
lwz 6,68(31)
bl .__udivdi3
nop
mr 10,4
mr 9,3
lwz 0,56(31)
cmplw 7,0,9
bgt 7,L..6
lwz 0,56(31)
cmpw 7,0,9
bne 7,L..2
lwz 0,60(31)
cmplw 7,0,10
ble 7,L..2
L..6:
li 0,1
b L..4
L..2:
li 0,2
L..4:
mr 3,0
addi 1,31,96
lwz 0,8(1)
mtlr 0
lwz 31,-4(1)
blr
LT..test:
.long 0
.byte 0,0,32,97,128,1,4,1
.long 0
.long LT..test-.test
.short 4
.byte "test"
.byte 31
.align 2
_section_.text:
.csect .data[RW],4
.long _section_.text
=================================================
this may be related to usage of libgcc's __udivdi3; because with gcc 3.3 on the
same platform this function is missing from libgcc; in gcc 4.4.0, it is there,
but the compiler crashes when using -std=gnu99 option.
--
Summary: crash when using -std=gnu99, no crash without -std=gnu99
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: vvv at vsu dot ru
GCC build triplet: powerpc-ibm-aix4.3.3.0
GCC host triplet: powerpc-ibm-aix4.3.3.0
GCC target triplet: powerpc-ibm-aix4.3.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40199
