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Fix Unicode name mangling

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`{` and `}` aren’t valid characters on ARM.

This also fixes a small bug where `)` (**r**ight **p**arenthesis) and `*`
(**r**aw **p**ointer) would both mangle to `$RP$`, making `)` show up as `*` in
backtraces.
This commit is contained in:
P1start 2015-01-22 20:12:57 +13:00
parent 7858cb432d
commit cfe18fb836
3 changed files with 24 additions and 21 deletions
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15
src/librustc_trans/back/link.rs
View file

@ -227,9 +227,8 @@ pub fn sanitize(s: &str) -> String {
match c {
// Escape these with $ sequences
'@' => result.push_str("$SP$"),
'~' => result.push_str("$UP$"),
'*' => result.push_str("$RP$"),
'&' => result.push_str("$BP$"),
'*' => result.push_str("$BP$"),
'&' => result.push_str("$RF$"),
'<' => result.push_str("$LT$"),
'>' => result.push_str("$GT$"),
'(' => result.push_str("$LP$"),
@ -247,10 +246,14 @@ pub fn sanitize(s: &str) -> String {
| '_' | '.' | '$' => result.push(c),
_ => {
let mut tstr = String::new();
for c in c.escape_unicode() { tstr.push(c) }
result.push('$');
result.push_str(&tstr[1..]);
for c in c.escape_unicode().skip(1) {
match c {
'{' => {},
'}' => result.push('$'),
c => result.push(c),
}
}
}
}
}

16
src/libstd/rt/backtrace.rs
View file

@ -57,22 +57,22 @@ mod test {
#[test]
fn demangle_dollars() {
t!("_ZN4$UP$E", "Box");
t!("_ZN8$UP$testE", "Boxtest");
t!("_ZN8$UP$test4foobE", "Boxtest::foob");
t!("_ZN10$u{20}test4foobE", " test::foob");
t!("_ZN4$RP$E", ")");
t!("_ZN8$RF$testE", "&test");
t!("_ZN8$BP$test4foobE", "*test::foob");
t!("_ZN9$u20$test4foobE", " test::foob");
}
#[test]
fn demangle_many_dollars() {
t!("_ZN14test$u{20}test4foobE", "test test::foob");
t!("_ZN12test$UP$test4foobE", "testBoxtest::foob");
t!("_ZN13test$u20$test4foobE", "test test::foob");
t!("_ZN12test$BP$test4foobE", "test*test::foob");
}
#[test]
fn demangle_windows() {
t!("ZN4testE", "test");
t!("ZN14test$u{20}test4foobE", "test test::foob");
t!("ZN12test$UP$test4foobE", "testBoxtest::foob");
t!("ZN13test$u20$test4foobE", "test test::foob");
t!("ZN12test$RF$test4foobE", "test&test::foob");
}
}

14
src/libstd/sys/common/backtrace.rs
View file

@ -107,9 +107,8 @@ pub fn demangle(writer: &mut Writer, s: &str) -> IoResult<()> {
// see src/librustc/back/link.rs for these mappings
demangle! (
"$SP$", => "@",
"$UP$", => "Box",
"$RP$", => "*",
"$BP$", => "&",
"$BP$", => "*",
"$RF$", => "&",
"$LT$", => "<",
"$GT$", => ">",
"$LP$", => "(",
@ -118,10 +117,11 @@ pub fn demangle(writer: &mut Writer, s: &str) -> IoResult<()> {
// in theory we can demangle any Unicode code point, but
// for simplicity we just catch the common ones.
"$u{20}", => " ",
"$u{27}", => "'",
"$u{5b}", => "[",
"$u{5d}", => "]"
"$u7e$", => "~",
"$u20$", => " ",
"$u27$", => "'",
"$u5b$", => "[",
"$u5d$", => "]"
)
} else {
let idx = match rest.find('$') {