Invent an input filename when reading from a pipe.

Resolves: #1523401

annobin-empty-input-filename.patch

@@ -0,0 +1,19 @@
+Binary files annobin.orig/.git/index and annobin-2.5.1/.git/index differ
+diff -rup annobin.orig/plugin/annobin.cc annobin-2.5.1/plugin/annobin.cc
+--- annobin.orig/plugin/annobin.cc	2017-12-08 10:57:16.555154143 +0000
++++ annobin-2.5.1/plugin/annobin.cc	2017-12-08 11:00:15.105903652 +0000
+@@ -103,6 +103,14 @@ init_annobin_current_filename (void)
+     return;
+ 
+   name = (char *) lbasename (main_input_filename);
++
++  if (strlen (name) == 0)
++    {
++      /* The name can be empty if we are receiving the source code
++	 from a pipe.  In this case, we invent our own name.  */
++      name = "piped_input";
++    }
++
+   if (global_file_name_symbols)
+     name = strcpy ((char *) xmalloc (strlen (name) + 20), name);
+   else

annobin.spec

@@ -1,7 +1,7 @@
 Name:    annobin
 Summary: Binary annotation plugin for GCC
 Version: 2.5.1
-Release: 3%{?dist}
+Release: 4%{?dist}
 
 License: GPLv3+
 URL:     https://fedoraproject.org/wiki/Toolchain/Watermark
@@ -11,9 +11,19 @@ URL:     https://fedoraproject.org/wiki/Toolchain/Watermark
 
 #---------------------------------------------------------------------------------
 Source:  https://nickc.fedorapeople.org/annobin-%{version}.tar.xz
+# For the latest sources use:  git clone git://sourceware.org/git/annobin.git
 
+# Purpose:  Fixes the generation of illegal assembler symbol names when
+#           working with unmangled function names.
+# Lifetime: Fixed in 2.5.2
 Patch1: funname.patch
 
+# Purpose:  Fixes a bug where an empty string would be used as an assembler
+#           symbol name because the source input was being read from a pipe.
+# Lifetime: Fixed in 2.5.2
+Patch2: annobin-empty-input-filename.patch
+
+
 # This is a gcc plugin, hence gcc is required.
 Requires: gcc
 
@@ -71,6 +81,9 @@ make check
 #---------------------------------------------------------------------------------
 
 %changelog
+* Fri Dec 08 2017 Florian Weimer <fweimer@redhat.com> - 2.5.1-4
+- Invent an input filename when reading from a pipe.  (#1523401)
+
 * Thu Nov 30 2017 Florian Weimer <fweimer@redhat.com> - 2.5.1-3
 - Use DECL_ASSEMBLER_NAME for symbol references (#1519165)