https://bugs.kde.org/show_bug.cgi?id=432801
--- Comment #30 from Paul Floyd <pjfl...@wanadoo.fr> ---
Indeed, I mixed up the C and C++ versions. I just tried the C++ patch on
FreeBSD (not yet officially supported). I haven't yet tried on Linux.
Here are my results:
pcmpgt.cpp:114:18: warning: suggest braces around initialization of subobject
[-Wmissing-braces]
V128 vx128 = {0};
^
{}
+ several similar warnings
pcmpgt.cpp:69:7: error: couldn't allocate output register for constraint 'x'
"pcmpgt%p[op] %[src],%[dst]"
^
pcmpgt.cpp:69:7: error: couldn't allocate output register for constraint 'x'
pcmpgt.cpp:69:7: error: couldn't allocate output register for constraint 'x'
pcmpgt.cpp:69:7: error: couldn't allocate output register for constraint 'x'
(with FreeBSD clang version 10.0.1 (g...@github.com:llvm/llvm-project.git
llvmorg-10.0.1-0-gef32c611aa2))
GCC on FreeBSD builds OK but the test fails as follows
paulf> cat pcmpgt.stderr.diff
--- pcmpgt.stderr.exp 2021-04-22 10:23:23.515674000 +0200
+++ pcmpgt.stderr.out 2021-04-22 10:38:08.450893000 +0200
@@ -10,26 +10,17 @@
by 0x........: void doit<unsigned long>(char const*, char const*, bool,
char const*) (pcmpgt.cpp:147)
by 0x........: main (pcmpgt.cpp:152)
-Use of uninitialised value of size 8
- ...
- by 0x........: void doit<unsigned long>(char const*, char const*, bool,
char const*) (pcmpgt.cpp:147)
- by 0x........: main (pcmpgt.cpp:152)
-
Conditional jump or move depends on uninitialised value(s)
...
by 0x........: void doit<unsigned long>(char const*, char const*, bool,
char const*) (pcmpgt.cpp:147)
by 0x........: main (pcmpgt.cpp:152)
-Conditional jump or move depends on uninitialised value(s)
+Syscall param write(buf) points to uninitialised byte(s)
...
by 0x........: void doit<unsigned long>(char const*, char const*, bool,
char const*) (pcmpgt.cpp:147)
by 0x........: main (pcmpgt.cpp:152)
+ Address 0x........ is on thread 1's stack
-Conditional jump or move depends on uninitialised value(s)
- ...
- by 0x........: void doit<unsigned long>(char const*, char const*, bool,
char const*) (pcmpgt.cpp:147)
- by 0x........: main (pcmpgt.cpp:152)
-
xxxxxxxxxxxxxxxx > xxxxxxxxxxxxxxxx == 0, completely undefined, error above, 1
== 1
xxxxxxxxxxxxxxxx > xxxxxxxxxxxxxxxx == 0, completely undefined, error above, 1
== 1
0000000000000000 > 0000000000000000 == 0, completely defined, 0 == 0
@@ -210,6 +201,16 @@
Address 0x........ is on thread 1's stack
in frame #0, created by void doit<unsigned short>(char const*, char const*,
bool, char const*) (pcmpgt.cpp:138)
+Conditional jump or move depends on uninitialised value(s)
+ ...
+ by 0x........: void doit<unsigned short>(char const*, char const*, bool,
char const*) (pcmpgt.cpp:147)
+ by 0x........: main (pcmpgt.cpp:186)
+
+Conditional jump or move depends on uninitialised value(s)
+ ...
+ by 0x........: void doit<unsigned short>(char const*, char const*, bool,
char const*) (pcmpgt.cpp:147)
+ by 0x........: main (pcmpgt.cpp:186)
+
xxx0 > f000 == 65535, undefined, error above, 1 == 1
xxx0 > f000 == 65535, undefined, error above, 1 == 1
xxx0 > f000 == 65535, undefined, error above, 1 == 1
@@ -519,4 +520,4 @@
Use --track-origins=yes to see where uninitialised values come from
For lists of detected and suppressed errors, rerun with: -s
-ERROR SUMMARY: 848 errors from 21 contexts (suppressed: 0 from 0)
+ERROR SUMMARY: 592 errors from 21 contexts (suppressed: 0 from 0)
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