Commit bd9c629c4c306c9159a5e6ad16fe5637d2bc6dbf | zig

author	Andrew Kelley <andrew@ziglang.org> 2019-05-03 14:39:54-04:00
committer	Andrew Kelley <andrew@ziglang.org> 2019-05-03 14:39:54-04:00
log	bd9c629c4c306c9159a5e6ad16fe5637d2bc6dbf
tree	f7f07bc1a38c20e4ebb77a4e4445b3c73213ff33
parent	8cda4fd73a91e7bd678e69dbfbc0b46d15d116d4
signature	Commit is signed but in an unrecognized format.

always respect threadlocal for variables with external linkage

Previously if you had, for example:

extern "c" threadlocal var errno: c_int;

This would turn errno into a normal variable for --single-threaded
builds. However for variables with external linkage, there is an ABI
to uphold.

This is needed to make errno work for DragonFly BSD. See #2381.

1 files changed, 1 insertions(+), 1 deletions(-)

src
- codegen.cpp

src/codegen.cpp+1-1

...	@@ -6639,7 +6639,7 @@ static void validate_inline_fns(CodeGen *g) {	...	@@ -6639,7 +6639,7 @@ static void validate_inline_fns(CodeGen *g) {
6639	}	6639	}
6640		6640
6641	static void set_global_tls(CodeGen g, ZigVar var, LLVMValueRef global_value) {	6641	static void set_global_tls(CodeGen g, ZigVar var, LLVMValueRef global_value) {
6642	if (var->is_thread_local && !g->is_single_threaded) {	6642	if (var->is_thread_local && (!g->is_single_threaded \|\| var->linkage != VarLinkageInternal)) {
6643	LLVMSetThreadLocalMode(global_value, LLVMGeneralDynamicTLSModel);	6643	LLVMSetThreadLocalMode(global_value, LLVMGeneralDynamicTLSModel);
6644	}	6644	}
6645	}	6645	}