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newlib: don't define non-thread-safe versions of getc, putc

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getc, getchar, putc, putchar were defined both as functions and as
macros. The macro versions are not thread safe, and should not be used
in multithreaded applications.

Upstream fix: b0f271d1db
This commit is contained in:
Ivan Grokhotkov 2020-03-19 12:44:20 +01:00
parent 51adc08070
commit 63a544dd3c
1 changed files with 4 additions and 0 deletions
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4
components/newlib/include/stdio.h
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@ -696,8 +696,10 @@ _ELIDABLE_INLINE int __sputc_r(struct _reent *_ptr, int _c, FILE *_p) {
#ifndef __CYGWIN__
#ifndef lint
#ifdef __SINGLE_THREAD__
#define getc(fp) __sgetc_r(_REENT, fp)
#define putc(x, fp) __sputc_r(_REENT, x, fp)
#endif /* __SINGLE_THREAD__ */
#endif /* lint */
#endif /* __CYGWIN__ */
@ -714,8 +716,10 @@ _ELIDABLE_INLINE int __sputc_r(struct _reent *_ptr, int _c, FILE *_p) {
#endif /* !__CUSTOM_FILE_IO__ */
#ifdef __SINGLE_THREAD__
#define getchar() getc(stdin)
#define putchar(x) putc(x, stdout)
#endif /* __SINGLE_THREAD__ */
#ifndef __STRICT_ANSI__
#define getchar_unlocked() getc_unlocked(stdin)