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Merge pull request #418 from greg-king5/while-nothing
Fix the handling of the C construct "while (0) { }".
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commit
9b243ff68c
@ -273,9 +273,6 @@ static void WhileStatement (void)
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/* Remember the current position */
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GetCodePos (&CondCodeStart);
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/* Emit the code position label */
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g_defcodelabel (CondLabel);
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/* Test the loop condition */
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TestInParens (LoopLabel, 1);
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@ -288,6 +285,9 @@ static void WhileStatement (void)
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/* Loop body */
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Statement (&PendingToken);
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/* Emit the while condition label */
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g_defcodelabel (CondLabel);
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/* Move the test code here */
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GetCodePos (&Here);
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MoveCode (&CondCodeStart, &CondCodeEnd, &Here);
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116
test/val/while.c
116
test/val/while.c
@ -1,53 +1,107 @@
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/*
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!!DESCRIPTION!!
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!!DESCRIPTION!! while-condition tests
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!!ORIGIN!! SDCC regression tests
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!!LICENCE!! GPL, read COPYING.GPL
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*/
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#include <stdio.h>
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#include <limits.h>
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unsigned char success = 0;
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unsigned char failures = 0;
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unsigned char dummy = 0;
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static unsigned char failures = 0x00;
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static unsigned char achar0 = 0;
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#ifdef SUPPORT_BIT_TYPES
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bit bit0 = 0;
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#endif
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unsigned int aint0 = 0;
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unsigned int aint1 = 0;
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unsigned char achar0 = 0;
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unsigned char achar1 = 0;
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void
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done ()
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{
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dummy++;
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}
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void
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static void
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while1 (void)
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{
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unsigned char i = 10;
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do
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{
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achar0++;
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}
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while (--i);
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do {
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++achar0;
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} while (--i);
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if (achar0 != 10)
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failures++;
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if (achar0 != 10) {
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failures |= 0x01;
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}
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}
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static void
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while2 (void)
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{
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unsigned char i = 10;
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achar0 = 0;
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while (--i) {
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++achar0;
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}
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if (achar0 != 10 - 1) {
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failures |= 0x02;
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}
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}
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static void
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while3 (void)
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{
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achar0 = 0;
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do {
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if (++achar0 == (unsigned char)0) {
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return;
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}
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} while (1);
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failures |= 0x04;
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}
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static void
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while4 (void)
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{
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achar0 = 0;
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while (1) {
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if (++achar0 == (unsigned char)0) {
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return;
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}
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}
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failures |= 0x08;
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}
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static void
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while5 (void)
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{
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achar0 = 0;
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do {
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++achar0;
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} while (0);
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if (achar0 != 1) {
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failures |= 0x10;
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}
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}
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static void
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while6 (void)
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{
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achar0 = 0;
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while (0) {
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++achar0;
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}
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if (achar0 != 1 - 1) {
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failures |= 0x20;
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}
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}
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int
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main (void)
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{
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while1 ();
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while2 ();
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while3 ();
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while4 ();
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while5 ();
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while6 ();
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success = failures;
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done ();
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printf("failures: %d\n",failures);
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if (failures) {
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printf("failures: 0x%02X\n", failures);
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}
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return failures;
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}
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