Invalid execve regex

[lacombar]

The regex tracing the execve syscall fails to include a return value. As a result, failed system call will still considered valid, where they should not be and will both be included to the compilation database

For exemple:

[pid 30681] execve("/invalid/path/to/clang++", ["clang++", ..., "../src/compiler/js-builtin-reducer.cc"], [/* 58 vars */]) = -1 ENOENT (No such file or directory)
[pid 30681] execve("/valid/path/to/clang++", ["clang++", ..., "../src/compiler/js-builtin-reducer.cc"], [/* 58 vars */]) = 0

[lacombar]

This seems to do the job...

diff --git a/clang-tags b/clang-tags
index 9820075..0eccf0f 100755
--- a/clang-tags
+++ b/clang-tags
@@ -135,7 +135,7 @@ def trace (args):
     cwd = os.getcwd()

     chdir_re = re.compile ("\[pid\s+\d+\] chdir\((.*)\) = 0")
-    exec_re  = re.compile ("\[pid\s+\d+\] execve(\(.*\)) = ")
+    exec_re  = re.compile ("\[pid\s+\d+\] execve(\(.*\)) = 0")

     for line in p.stderr: