clang -cc1 -fdelayed-template-parsing -emit-pch does not save template contents in PCH

[zygoloid]

Bugzilla Link	9992
Resolution	FIXED
Resolved on	Mar 27, 2014 10:49
Version	trunk
OS	Linux
Blocks	llvm/llvm-bugzilla-archive#13707
CC	@DougGregor,@tritao,@synopsys-sig-compiler-frontends

Extended Description

$ echo 'template void f() { i can put anything here }' | clang++ -cc1 -x c++ -fdelayed-template-parsing -emit-pch -o tmp.pch
$ echo 'template void g() { f(); } int n = (g(), 0);' | ./clang++ -cc1 -x c++ -fdelayed-template-parsing -include-pch tmp.pch -emit-llvm -o - | grep _Z1fIiEvv
call void @​_Z1fIiEvv()
declare void @​_Z1fIiEvv()

Oops. It looks like the tokens for 'f' are neither parsed nor saved in the PCH file, resulting in us silently losing 'f's definition.

[DougGregor]

This is also rdar://problem/13342361

[DougGregor]

Resetting to default assignee

[llvmbot]

Fixed (slightly inefficiently) in r187916.