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#!/bin/sh
set -eu
base="${TMPDIR-/tmp}/mcpu-cpp-macro-whitespace-$$"
mkdir -p "$base"
trap 'rm -rf "$base"' EXIT HUP INT TERM
cat > "$base/main.c" <<'EOT'
#define MULTI(fmt, ...) \
do \
{ \
output(fmt __VA_OPT__(,) __VA_ARGS__); \
done(); \
} \
while( 0 )
#define TEXT "left right"
#define OPS + + - > < <
#define ID(x) x
#define V(...) __VA_OPT__(__VA_ARGS__)
void
f( int x )
{
MULTI("x=%d", x);
MULTI("hello");
ID(alpha + beta);
V(gamma + delta);
const char *s = TEXT;
OPS
}
EOT
"$MCPU_CPP" --no-config "$base/main.c" -o "$base/out"
sed '/^#/d; /^[[:space:]]*$/d' "$base/out" > "$base/norm"
cat > "$base/expected" <<'EOT'
void
f( int x )
{
do { output("x=%d" , x); done(); } while( 0 );
do { output("hello" ); done(); } while( 0 );
alpha + beta;
gamma + delta;
const char *s = "left right";
+ + - > < <
}
EOT
diff -u "$base/expected" "$base/norm"
# Macro dumps use the same normalized replacement-list whitespace.
"$MCPU_CPP" --no-config -dM "$base/main.c" > "$base/dump"
grep -Fx '#define MULTI(fmt,...) do { output(fmt __VA_OPT__(,) __VA_ARGS__); done(); } while( 0 )' "$base/dump" >/dev/null
grep -Fx '#define TEXT "left right"' "$base/dump" >/dev/null
grep -Fx '#define OPS + + - > < <' "$base/dump" >/dev/null
grep -Fx '#define ID(x) x' "$base/dump" >/dev/null
grep -Fx '#define V(...) __VA_OPT__(__VA_ARGS__)' "$base/dump" >/dev/null
# Ordinary source text that is not replacement-list formatting stays untouched.
cat > "$base/plain.c" <<'EOT'
int plain = 1;
#define ID(x) x
#define V(...) __VA_OPT__(__VA_ARGS__)
ID(a + b)
EOT
"$MCPU_CPP" --no-config "$base/plain.c" -o "$base/plain.out"
sed '/^#/d; /^[[:space:]]*$/d' "$base/plain.out" > "$base/plain.norm"
cat > "$base/plain.expected" <<'EOT'
int plain = 1;
a + b
EOT
diff -u "$base/plain.expected" "$base/plain.norm"
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