forked from OSchip/llvm-project
5257efdc5b
Tests in the `cross-project-tests/debuginfo-tests/llgdb-tests` directory run gdb on non-darwin platforms. gdb versions less than 10.1 cannot parse the DWARF v5 emitted by clang, and DWARF v5 is now the default, so these tests fail on Linux with gdb versions less than 10.1. This patch lets us XFAIL the tests under these conditions. Add `gdb-clang-incompatibility` to the `available_features` in `cross-project-tests/lit.cfg.py` when clang's default DWARF version is 5 or greater and the gdb (if found) version is less than 10.1. Discourse discussion: https://llvm.discourse.group/t/gdb-10-1-cant-read-clangs-dwarf-v5/6035 Reviewed By: jmorse Differential Revision: https://reviews.llvm.org/D118468 |
||
|---|---|---|
| .. | ||
| clang_llvm_roundtrip | ||
| dexter | ||
| dexter-tests | ||
| llgdb-tests | ||
| llvm-prettyprinters/gdb | ||
| win_cdb-tests | ||
| README.txt | ||
| lit.local.cfg | ||
README.txt
-*- rst -*-
This is a collection of tests to check debugging information generated by
compiler. This test suite can be checked out inside clang/test folder. This
will enable 'make test' for clang to pick up these tests.
Some tests (in the 'llgdb-tests' directory) are written with debugger
commands and checks for the intended debugger output in the source file,
using DEBUGGER: and CHECK: as prefixes respectively.
For example::
define i32 @f1(i32 %i) nounwind ssp {
; DEBUGGER: break f1
; DEBUGGER: r
; DEBUGGER: p i
; CHECK: $1 = 42
entry:
}
is a testcase where the debugger is asked to break at function 'f1' and
print value of argument 'i'. The expected value of 'i' is 42 in this case.
Other tests are written for use with the 'Dexter' tool (in the 'dexter-tests'
and 'dexter' directories respectively). These use a domain specific language
in comments to describe the intended debugger experience in a more abstract
way than debugger commands. This allows for testing integration across
multiple debuggers from one input language.
For example::
void __attribute__((noinline, optnone)) bar(int *test) {}
int main() {
int test;
test = 23;
bar(&test); // DexLabel('before_bar')
return test; // DexLabel('after_bar')
}
// DexExpectWatchValue('test', '23', on_line='before_bar')
// DexExpectWatchValue('test', '23', on_line='after_bar')
Labels two lines with the names 'before_bar' and 'after_bar', and records that
the 'test' variable is expected to have the value 23 on both of them.