From: Eric Blake <eblake@redhat.com>
Date: 2010年8月30日 18:08:47 +0000 (-0600)
Subject: maint: test bad format string crash.
X-Git-Url: https://gitweb.git.savannah.gnu.org/gitweb/?a=commitdiff_plain;h=37ea22baf81a4e3fc0896e3d6ac23d821ab1aa76;p=m4.git
maint: test bad format string crash.
* doc/m4.texi (Format): Add a test.
Signed-off-by: Eric Blake <eblake@redhat.com>
---
diff --git a/doc/m4.texi b/doc/m4.texi
index 5a31eec8..bc2fccaf 100644
--- a/doc/m4.texi
+++ b/doc/m4.texi
@@ -7522,6 +7522,18 @@ format(`%.1f', `2a')
 @result{}2.0
 @end example
 
+@ignore
+@comment Expose a crash with a bad format string fixed in 1.4.15.
+@comment Unfortunately, 8-bit bytes are hard to check for; but the
+@comment exit status is enough to sniff the crash in broken versions.
+
+@comment xerr: ignore
+@example
+format(`%'format(`%c', `128'))
+@result{}
+@end example
+@end ignore
+
 @node Arithmetic
 @chapter Macros for doing arithmetic
 
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