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Merge pull request #17018 from kaspar030/picolibc_stdio_strong_reference

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sys/picolibc_syscalls_default: make stdin and stderr strong refs
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Francisco 2021-12-07 15:10:55 +01:00 committed by GitHub
commit f618c9758a
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1 changed files with 11 additions and 2 deletions
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13
sys/picolibc_syscalls_default/syscalls.c
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@ -236,9 +236,18 @@ FILE picolibc_stdio =
FDEV_SETUP_STREAM(picolibc_put, picolibc_get, picolibc_flush, _FDEV_SETUP_RW);
#ifdef PICOLIBC_STDIO_GLOBALS
FILE *const stdout = &picolibc_stdio;
#ifdef __strong_reference
/* This saves two const pointers.
* See https://github.com/RIOT-OS/RIOT/pull/17001#issuecomment-945936918
*/
#define STDIO_ALIAS(x) __strong_reference(stdin, x);
#else
#define STDIO_ALIAS(x) FILE *const x = &__picolibc_stdio;
#endif
FILE *const stdin = &picolibc_stdio;
FILE *const stderr = &picolibc_stdio;
STDIO_ALIAS(stdout);
STDIO_ALIAS(stderr);
#else
FILE *const __iob[] = {
&picolibc_stdio, /* stdin */