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Fix crash when disabling debug info (#4249)

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The source line debug info generation assumed that the function would
have debug info. Check for a non-null di_subprogram_ to ensure we are
emitting debug info for the function.

Rather than checking the di_builder_ - this way if we implement
`nodebug` function attributes, it'll fall out naturally (by creating a
null di_subprogram_) rather than having to come back and change this
from "is debug info enabled" to "is debug info enabled for this
function" later on.
This commit is contained in:
David Blaikie
2024-08-26 21:13:39 +00:00
committed by GitHub
parent 0ae2a3907e
commit 5177ebbe2a
2 changed files with 17 additions and 5 deletions
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toolchain/lower/testdata/debug/nodebug.carbon
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@@ -10,5 +10,13 @@
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/debug/nodebug.carbon
fn F() {
}
// CHECK:STDOUT: ; ModuleID = 'nodebug.carbon'
// CHECK:STDOUT: source_filename = "nodebug.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: define void @F() {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }