[SCM] GNU M4 source repository branch, branch-1.4, updated. v1.4.13-10-g3d14a9b

[Eric Blake]

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- Log -----------------------------------------------------------------
commit 3d14a9bdc82534da8e2bed18125a612344a6a9c9
Author: Eric Blake <address@hidden>
Date:   Tue Jul 21 21:38:41 2009 -0600

    Fix testsuite on Solaris.
    
    * doc/m4.texinfo (Command line files): Tolerate different spelling
    of EBADF.
    * src/builtin.c (m4_esyscmd): Clear errno before reaping.
    
    Signed-off-by: Eric Blake <address@hidden>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog      |    7 +++++++
 doc/m4.texinfo |   11 ++++++++++-
 src/builtin.c  |    1 +
 3 files changed, 18 insertions(+), 1 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index a2d5c51..ceca154 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2009-07-22  Eric Blake  <address@hidden>
+
+       Fix testsuite on Solaris.
+       * doc/m4.texinfo (Command line files): Tolerate different spelling
+       of EBADF.
+       * src/builtin.c (m4_esyscmd): Clear errno before reaping.
+
 2009-07-21  Eric Blake  <address@hidden>
 
        Fix testsuite on mingw.
diff --git a/doc/m4.texinfo b/doc/m4.texinfo
index 9195e06..b95d109 100644
--- a/doc/m4.texinfo
+++ b/doc/m4.texinfo
@@ -961,8 +961,10 @@ options.
 @error{}m4: cannot open `Makefile/': Not a directory
 @end example
 
address@hidden Test that closed stderr does not cause a crash.
address@hidden Test that closed stderr does not cause a crash.  Not all
address@hidden systems have the same message for EBADF.
 
address@hidden xerr: ignore
 @example
 ifdef(`__unix__', ,
       `errprint(` skipping: syscmd does not have unix semantics
@@ -972,6 +974,13 @@ syscmd([echo | ']__program__[' >&-])dnl
 @error{}m4: write error: Bad file descriptor
 sysval
 @result{}1
address@hidden example
+
address@hidden
+ifdef(`__unix__', ,
+      `errprint(` skipping: syscmd does not have unix semantics
+')m4exit(`77')')dnl
+changequote(`[', `]')dnl
 syscmd([echo 'esyscmd(echo hi >&2)dnl' > tmp.m4 \
   && ']__program__[' tmp.m4 <&- >&- \
   && rm tmp.m4])sysval
diff --git a/src/builtin.c b/src/builtin.c
index d416a00..5a097f3 100644
--- a/src/builtin.c
+++ b/src/builtin.c
@@ -1042,6 +1042,7 @@ m4_esyscmd (struct obstack *obs, int argc, token_data 
**argv)
     }
   if (ferror (pin) || fclose (pin))
     M4ERROR ((EXIT_FAILURE, errno, "cannot read pipe"));
+  errno = 0;
   status = wait_subprocess (child, ARG (0), false, true, true, false,
                            &sig_status);
   if (sig_status)


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