1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/gcc.c b/gcc/gcc.c
index fd2b182..5213cb0 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -1141,7 +1141,14 @@ static const char *cc1_options =
  %{-help=*:--help=%*}\
  %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
  %{fsyntax-only:-o %j} %{-param*}\
- %{coverage:-fprofile-arcs -ftest-coverage}";
+ %{coverage:-fprofile-arcs -ftest-coverage}\
+ %{fprofile-arcs|fprofile-generate*|coverage:\
+   %{!fprofile-update=single:\
+     %{pthread:-fprofile-update=atomic}}}\
+ %{fprofile-update=single:\
+   %{fprofile-arcs|fprofile-generate*|coverage:\
+     %{pthread:%n-fprofile-update=atomic should be used\
+ for a multithreaded application}}}";
 
 static const char *asm_options =
 "%{-target-help:%:print-asm-header()} "