Hello,
cpp_sys_macro_p crashes when -ftrack-macro-expansion is on. The issue
can be reproduced by running the tests:
runtest --tool gcc --tool_opts="-ftrack-macro-expansion" cpp.exp=sysmac1.c
runtest --tool gcc --tool_opts="-ftrack-macro-expansion" cpp.exp=sysmac2.c
This is because it just doesn't support that mode. Fixed thus.
Tested and bootstrapped on x86_64-unknown-linux-gnu against trunk.
Note that the bootstrap with -ftrack-macro-expansion turned on
exhibits other separate issues that are addressed in subsequent
patches. This patch just fixes one class of problems.
The patch does pass bootstrap with -ftrack-macro-expansion turned off,
though.
libcpp/
* macro.c (cpp_sys_macro_p): Support -ftrack-macro-expansion.
---
libcpp/macro.c | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/libcpp/macro.c b/libcpp/macro.c
index 54de3e3..58a722c 100644
--- a/libcpp/macro.c
+++ b/libcpp/macro.c
@@ -2436,7 +2436,15 @@ cpp_get_token_with_location (cpp_reader *pfile,
source_location *loc)
int
cpp_sys_macro_p (cpp_reader *pfile)
{
- cpp_hashnode *node = pfile->context->c.macro;
+ cpp_hashnode *node = NULL;
+
+ if (CPP_OPTION (pfile, track_macro_expansion))
+ {
+ if (pfile->context->c.mc)
+ node = pfile->context->c.mc->macro_node;
+ }
+ else
+ node = pfile->context->c.macro;
return node && node->value.macro && node->value.macro->syshdr;
}
--
Dodji
