5 files changed, 44 insertions, 14 deletions
diff --git a/examples/blinky.cpp b/examples/blinky.cpp
index e156bf2..b037a1f 100644
--- a/examples/blinky.cpp
+++ b/examples/blinky.cpp
@@ -42,8 +42,14 @@ void loop() {
     delay(100);
 }
 
-int main(void) {
+// Force init to be called *first*, i.e. before static object allocation.
+// Otherwise, statically allocated object that need libmaple may fail.
+ __attribute__(( constructor )) void premain() {
     init();
+}
+
+int main(void)
+{
     setup();
 
     while (1) {
diff --git a/examples/debug-dtrrts.cpp b/examples/debug-dtrrts.cpp
index c85b342..f9f8b96 100644
--- a/examples/debug-dtrrts.cpp
+++ b/examples/debug-dtrrts.cpp
@@ -30,9 +30,14 @@ void loop() {
     Serial2.println(usbGetRTS(), DEC);
 }
 
-
-int main(void) {
+// Force init to be called *first*, i.e. before static object allocation.
+// Otherwise, statically allocated object that need libmaple may fail.
+ __attribute__(( constructor )) void premain() {
     init();
+}
+
+int main(void)
+{
     setup();
 
     while (1) {
@@ -40,3 +45,4 @@ int main(void) {
     }
     return 0;
 }
+
diff --git a/examples/qa-slave-shield.cpp b/examples/qa-slave-shield.cpp
index fcee9cf..b395cca 100644
--- a/examples/qa-slave-shield.cpp
+++ b/examples/qa-slave-shield.cpp
@@ -37,9 +37,14 @@ void loop() {
     }
 }
 
-
-int main(void) {
+// Force init to be called *first*, i.e. before static object allocation.
+// Otherwise, statically allocated object that need libmaple may fail.
+ __attribute__(( constructor )) void premain() {
     init();
+}
+
+int main(void)
+{
     setup();
 
     while (1) {
@@ -47,3 +52,4 @@ int main(void) {
     }
     return 0;
 }
+
diff --git a/examples/spi_master.cpp b/examples/spi_master.cpp
index 2b62c8d..9f6d81b 100644
--- a/examples/spi_master.cpp
+++ b/examples/spi_master.cpp
@@ -59,12 +59,19 @@ void loop() {
    delay(1000);
 }
 
-int main(void) {
-   init();
-   setup();
+// Force init to be called *first*, i.e. before static object allocation.
+// Otherwise, statically allocated object that need libmaple may fail.
+ __attribute__(( constructor )) void premain() {
+    init();
+}
+
+int main(void)
+{
+    setup();
 
-   while (1) {
-      loop();
-   }
-   return 0;
+    while (1) {
+        loop();
+    }
+    return 0;
 }
+
diff --git a/examples/test-session.cpp b/examples/test-session.cpp
index 4f09591..9885ab3 100644
--- a/examples/test-session.cpp
+++ b/examples/test-session.cpp
@@ -555,8 +555,14 @@ void do_fast_gpio(void) {
     gpio_write_bit(GPIOB_BASE, 5, 1); gpio_write_bit(GPIOB_BASE, 5, 0); 
 }
 
-int main(void) {
+// Force init to be called *first*, i.e. before static object allocation.
+// Otherwise, statically allocated object that need libmaple may fail.
+ __attribute__(( constructor )) void premain() {
     init();
+}
+
+int main(void)
+{
     setup();
 
     while (1) {
@@ -564,4 +570,3 @@ int main(void) {
     }
     return 0;
 }
-