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Merge pull request #1824 from yangfasheng/master 

update armlibc/stdio.c
This commit is contained in:
Bernard Xiong 2018-09-18 18:38:57 +08:00 committed by GitHub
parent 6de7be2693 f31b11de78
commit ef4f904096
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 18 additions and 2 deletions
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20
components/libc/compilers/armlibc/stdio.c
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@ -65,11 +65,27 @@ int libc_stdio_get_console(void)
int libc_stdio_read(void *buffer, size_t size) int libc_stdio_read(void *buffer, size_t size)
{ {
return read(std_fd, buffer, size); if (std_fd >= 0)
{
return read(std_fd, buffer, size);
}
else
{
rt_kprintf("Illegal stdio input!\n");
return 0;
}
} }
int libc_stdio_write(const void *buffer, size_t size) int libc_stdio_write(const void *buffer, size_t size)
{ {
return write(std_fd, buffer, size); if (std_fd >= 0)
{
return write(std_fd, buffer, size);
}
else
{
rt_kprintf("Illegal stdio output!\n");
return size;
}
} }
#endif #endif