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vsprintf:fix bug when print int64 0x8000000000000000

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stdio/lib_libvsprintf.c:1018:17: runtime error: negation of -9223372036854775808 cannot be
represented in type 'long long int'; cast to an unsigned type to negate this value to itself
    #0 0x3326a86 in vsprintf_internal stdio/lib_libvsprintf.c:1018
    #1 0x332926b in lib_vsprintf stdio/lib_libvsprintf.c:1363
    #2 0x3777978 in vfprintf stdio/lib_vfprintf.c:52
    #3 0x671b3a0 in printf stdio/lib_printf.c:44
    #4 0x37abc0c in hello_main /data/project/code/vela-pt/apps/examples/hello/hello_main.c:38
    #5 0x33201d3 in nxtask_startup sched/task_startup.c:70
    #6 0x3208ecb in nxtask_start task/task_start.c:134
    #7 0x3357a49 in pre_start sim/sim_initialstate.c:52

Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
This commit is contained in:
Bowen Wang
2023-12-08 12:05:24 +08:00
committed by Petro Karashchenko
parent bbf60ec685
commit 71ee767fe2
1 changed files with 5 additions and 1 deletions
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libs/libc/stdio/lib_libvsprintf.c
+5 -1
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@@ -1018,7 +1018,11 @@ str_lpad:
flags &= ~(FL_NEGATIVE | FL_ALT); flags &= ~(FL_NEGATIVE | FL_ALT);
if (x < 0) if (x < 0)
{ {
x = -x; #ifndef CONFIG_HAVE_LONG_LONG
x = -(unsigned long)x;
#else
x = -(unsigned long long)x;
#endif
flags |= FL_NEGATIVE; flags |= FL_NEGATIVE;
} }