Handle gdb command failure gracefully in compiletest

Previously, if the gdb command was available, but threw an error, compiletest would panic.  This is obviously not good. Now, gdb is treated as missing if calling `gdb --version` does not output anything on stdout.
This commit is contained in:
varkor 2018-02-23 23:54:24 +00:00
parent 063deba92e
commit 70db41cdf7

View file

@ -736,17 +736,12 @@ fn analyze_gdb(gdb: Option<String>) -> (Option<String>, Option<u32>, bool) {
Some(ref s) => s,
};
let version_line = Command::new(gdb)
.arg("--version")
.output()
.map(|output| {
String::from_utf8_lossy(&output.stdout)
.lines()
.next()
.unwrap()
.to_string()
})
.ok();
let mut version_line = None;
if let Ok(output) = Command::new(gdb).arg("--version").output() {
if let Some(first_line) = String::from_utf8_lossy(&output.stdout).lines().next() {
version_line = Some(first_line.to_string());
}
}
let version = match version_line {
Some(line) => extract_gdb_version(&line),