diff options
| -rw-r--r-- | extra/Configs/Config.in | 13 | ||||
| -rw-r--r-- | libc/stdlib/abort.c | 14 |
2 files changed, 26 insertions, 1 deletions
diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index 743c3f554..4cb4216bb 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -775,10 +775,11 @@ config UCLIBC_PRINTF_SCANF_POSITIONAL_ARGS config UCLIBC_HAS_SCANF_GLIBC_A_FLAG - bool "Support glibc's 'a' flag for scanf string conversions" + bool "Support glibc's 'a' flag for scanf string conversions (not implemented)" default n help NOTE!!! Currently Not Implemented!!! Just A Place Holder!! NOTE!!! + NOTE!!! Conflicts with an ANSI/ISO C99 scanf flag!! NOTE!!! Answer Y to enable support for glibc's 'a' flag for the scanf string conversions '%s', '%[', '%ls', '%l[', and '%S'. This is used to @@ -851,6 +852,16 @@ config UCLIBC_HAS_STDIO_BUILTIN_BUFFER_8 endchoice +config UCLIBC_HAS_STDIO_SHUTDOWN_ON_ABORT + bool "Attemt to shutdown stdio subsystem when abort() is called." + default n + help + ANSI/ISO C99 requires abort() to be asyn-signal-safe. So there was a behavioral + change made in SUSv3. Previously, abort() was required to have the affect of + fclose() on all open streams. The wording has been changed to "may" from "shall". + + Most people will answer N. + config UCLIBC_HAS_STDIO_GETC_MACRO bool "Provide a macro version of getc()" depends !UCLIBC_HAS_STDIO_BUFSIZ_NONE diff --git a/libc/stdlib/abort.c b/libc/stdlib/abort.c index 05d7a6836..77c2cdc69 100644 --- a/libc/stdlib/abort.c +++ b/libc/stdlib/abort.c @@ -63,6 +63,9 @@ Cambridge, MA 02139, USA. */ #warning no abort instruction define for your arch #endif +#ifdef __UCLIBC_HAS_STDIO_SHUTDOWN_ON_ABORT__ +extern void weak_function _stdio_term(void); +#endif extern void _exit __P((int __status)) __attribute__ ((__noreturn__)); static int been_there_done_that = 0; @@ -95,6 +98,17 @@ void abort(void) /* Try to suicide with a SIGABRT */ if (been_there_done_that == 0) { been_there_done_that++; + +#ifdef __UCLIBC_HAS_STDIO_SHUTDOWN_ON_ABORT__ + /* If we are using stdio, try to shut it down. At the very least, + * this will attemt to commit all buffered writes. It may also + * unboffer all writable files, or close them outright. + * Check the stdio routines for details. */ + if (_stdio_term) { + _stdio_term(); + } +#endif + abort_it: UNLOCK; raise(SIGABRT); |