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llvm-project/clang/test/Modules/merge-name-for-linkage.cpp

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[modules] If we load two declarations with typedef names for linkage purposes on top of a local declaration of the same entity, we still need to remember that we loaded the first one or we may fail to merge the second one properly. llvm-svn: 226765
2015-01-22 10:21:23 +08:00
// RUN: rm -rf %t
[modules] Simplify -cc1 interface for enabling implicit module maps. We used to have a flag to enable module maps, and two more flags to enable implicit module maps. This is all redundant; we don't need any flag for enabling module maps in the abstract, and we don't usually have -fno- flags for -cc1. We now have just a single flag, -fimplicit-module-maps, that enables implicitly searching the file system for module map files and loading them. The driver interface is unchanged for now. We should probably rename -fmodule-maps to -fimplicit-module-maps at some point. llvm-svn: 239789
2015-06-16 08:08:24 +08:00
// RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I%S/Inputs/merge-name-for-linkage -verify %s
[modules] If we load two declarations with typedef names for linkage purposes on top of a local declaration of the same entity, we still need to remember that we loaded the first one or we may fail to merge the second one properly. llvm-svn: 226765
2015-01-22 10:21:23 +08:00
// expected-no-diagnostics
typedef union {} pthread_mutex_t;
PR29166: when merging declarations with typedef names for linkage purposes, don't assume that the anonymous struct will be part of the most recent declaration of the typedef. llvm-svn: 280136
2016-08-31 03:13:18 +08:00
typedef pthread_mutex_t pthread_mutex_t;
[modules] If we load two declarations with typedef names for linkage purposes on top of a local declaration of the same entity, we still need to remember that we loaded the first one or we may fail to merge the second one properly. llvm-svn: 226765
2015-01-22 10:21:23 +08:00
#include "a.h"
pthread_mutex_t x;
#include "b.h"
pthread_mutex_t y;
[modules] When reading / writing a typedef that is a name for linkage for another declaration, ensure we actually serialize / deserialize that declaration. Before this patch, if another copy of the typedef were merged with the parsed version, we would emit type information referring to the merged version and consequently emit nothing about the parsed anonymous struct. This resulted in us losing information, particularly the visible merged module set for the parsed definition. Force that information to be emitted and to be loaded when the typedef is used. llvm-svn: 293219
2017-01-27 06:39:55 +08:00
merged_after_definition z;