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1214c97666
We usually test against the newlib/libgloss environment, but for a few ports that also support Linux apps, we want to test that logic too. A lot of the C code is written such that it works with either newlib/libgloss or glibc/linux toolchains, but we have some tests that end up being Linux-specific. Cris has been using the target tuple as a rough proxy for this (where cris*-*-elf is assumed to be newlib/libgloss, and everything else is glibc/linux), but that is a bit too rough, and it doesn't work in a multitarget build. So lets create a few stub files that we can do compile tests with to detect the different setups, and then let tests declare which one they require (if they require any at all).
60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
/* Check that TRT happens for pipe corner cases (for our definition of TRT).
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#progos: linux
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#xerror:
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#output: Terminating simulation due to writing pipe * from one single thread\n
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#output: program stopped with signal 4 (*).\n
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*/
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#include <stddef.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <limits.h>
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void err (const char *s)
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{
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perror (s);
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abort ();
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}
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int main (void)
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{
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int pip[2];
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int pipemax;
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char *buf;
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if (pipe (pip) != 0)
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err ("pipe");
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#ifdef PIPE_MAX
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pipemax = PIPE_MAX;
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#else
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pipemax = fpathconf (pip[1], _PC_PIPE_BUF);
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#endif
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if (pipemax <= 0)
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{
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fprintf (stderr, "Bad pipemax %d\n", pipemax);
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abort ();
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}
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/* Writing an inordinate amount to the pipe. */
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buf = calloc (100 * pipemax, 1);
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if (buf == NULL)
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err ("calloc");
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/* The following doesn't trig on host; writing more than PIPE_MAX to a
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pipe with no reader makes the program hang. Neither does it trig
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on target: we don't want to emulate the "hanging" (which would
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happen with *any* amount written to a pipe with no reader if we'd
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support it - but we don't). Better to abort the simulation with a
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suitable message. */
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if (write (pip[1], buf, 100 * pipemax) != -1
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|| errno != EFBIG)
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err ("write mucho");
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printf ("pass\n");
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exit (0);
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}
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