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-rw-r--r--module/c/cpp.scm1
1 files changed, 1 insertions, 0 deletions
diff --git a/module/c/cpp.scm b/module/c/cpp.scm
index c782e468..8710fdd2 100644
--- a/module/c/cpp.scm
+++ b/module/c/cpp.scm
@@ -6,6 +6,7 @@
:use-module (ice-9 regex)
:use-module ((rnrs io ports) :select (call-with-port))
:use-module (ice-9 pretty-print) ; used by one error handler
+ :use-module (ice-9 format)
:use-module ((hnh util io) :select (read-lines))
:use-module (hnh util graph)
:use-module (c lex)