Package: gcc-4.9
Version: 4.9.3-3
Severity: normal
Dear Maintainer,
This bug may affect all gcc-4, but has been fixed on gcc-5 upstream:
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=16602).
When compiling the attached code, gcc-4 always warns
"
ex_ptrtoarr.c: In function ‘main’:
ex_ptrtoarr.c:13:3: warning: passing argument 1 of ‘mdsumcmp’ from
incompatible pointer type [enabled by default]
return mdsumcmp(&sum1, &sum2);
^
ex_ptrtoarr.c:4:5: note: expected ‘const uint8_t (*)[16]’ but argument is
of type ‘uint8_t (*)[16]’
int mdsumcmp(const uint8_t (*s1)[16], const uint8_t (*s2)[16])
^
ex_ptrtoarr.c:13:3: warning: passing argument 2 of ‘mdsumcmp’ from
incompatible pointer type [enabled by default]
return mdsumcmp(&sum1, &sum2);
^
ex_ptrtoarr.c:4:5: note: expected ‘const uint8_t (*)[16]’ but argument is
of type ‘uint8_t (*)[16]’
int mdsumcmp(const uint8_t (*s1)[16], const uint8_t (*s2)[16])
^
"
but gcc-5 and clang complain nothing.
-- System Information:
Debian Release: stretch/sid
APT prefers testing
APT policy: (900, 'testing'), (500, 'testing-proposed-updates'), (500,
'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.1.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=zh_CN.UTF-8, LC_CTYPE=zh_CN.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages gcc-4.9 depends on:
ii binutils 2.25.1-1
ii cpp-4.9 4.9.3-3
ii gcc-4.9-base 4.9.3-3
ii libc6 2.19-19
ii libcloog-isl4 0.18.3-1
ii libgcc-4.9-dev 4.9.3-3
ii libgmp10 2:6.0.0+dfsg-7
ii libisl13 0.14-2
ii libmpc3 1.0.3-1
ii libmpfr4 3.1.3-1
ii zlib1g 1:1.2.8.dfsg-2+b1
Versions of packages gcc-4.9 recommends:
ii libc6-dev 2.19-19
Versions of packages gcc-4.9 suggests:
pn gcc-4.9-doc <none>
pn gcc-4.9-locales <none>
pn gcc-4.9-multilib <none>
pn libasan1-dbg <none>
pn libatomic1-dbg <none>
pn libcilkrts5-dbg <none>
pn libgcc1-dbg <none>
pn libgomp1-dbg <none>
pn libitm1-dbg <none>
pn liblsan0-dbg <none>
pn libquadmath0-dbg <none>
pn libtsan0-dbg <none>
pn libubsan0-dbg <none>
-- no debconf information
#include <string.h>
#include <stdint.h>
int mdsumcmp(const uint8_t (*s1)[16], const uint8_t (*s2)[16])
{
return memcmp(*s1, *s2, sizeof(*s1));
}
int main(void)
{
uint8_t sum1[16];
uint8_t sum2[16];
return mdsumcmp(&sum1, &sum2);
}
