Apply NetBSD patch-ae: another gcc sparc64 bug.

p4raw-id: //depot/perl@13566

diff --git a/regcomp.c b/regcomp.c
index c73e815..40e7916 100644 (file)
--- a/regcomp.c
+++ b/regcomp.c
@@ -658,6 +658,17 @@ S_cl_or(pTHX_ RExC_state_t *pRExC_state, struct regnode_charclass_class *cl, str
     }
 }
 
+/*
+ * There are strange code-generation bugs caused on sparc64 by gcc-2.95.2.
+ * These need to be revisited when a newer toolchain becomes available.
+ */
+#if defined(__sparc64__) && defined(__GNUC__)
+#   if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
+#       undef  SPARC64_GCC_WORKAROUND
+#       define SPARC64_GCC_WORKAROUND 1
+#   endif
+#endif
+
 /* REx optimizer.  Converts nodes into quickier variants "in place".
    Finds fixed substrings.  */
 
@@ -1203,11 +1214,28 @@ S_study_chunk(pTHX_ RExC_state_t *pRExC_state, regnode **scanp, I32 *deltap, reg
                    int counted = mincount != 0;
 
                    if (data->last_end > 0 && mincount != 0) { /* Ends with a string. */
+#if defined(SPARC64_GCC_WORKAROUND)
+                       I32 b = 0;
+                       STRLEN l = 0;
+                       char *s = NULL;
+                       I32 old = 0;
+
+                       if (pos_before >= data->last_start_min)
+                           b = pos_before;
+                       else
+                           b = data->last_start_min;
+
+                       l = 0;
+                       s = SvPV(data->last_found, l);
+                       old = b - data->last_start_min;
+
+#else
                        I32 b = pos_before >= data->last_start_min
                            ? pos_before : data->last_start_min;
                        STRLEN l;
                        char *s = SvPV(data->last_found, l);
                        I32 old = b - data->last_start_min;
+#endif
 
                        if (UTF)
                            old = utf8_hop((U8*)s, old) - (U8*)s;