pp_subst: exit earlier after failed match

[perl5.git] / pp_pack.c

diff --git a/pp_pack.c b/pp_pack.c
index 0ae8afd..be9b115 100644 (file)
--- a/pp_pack.c
+++ b/pp_pack.c
@@ -645,7 +645,7 @@ uni_to_byte(pTHX_ const char **s, const char *end, I32 datumtype)
     STRLEN retlen;
     UV val = utf8n_to_uvchr((U8 *) *s, end-*s, &retlen,
                         ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY);
-    /* We try to process malformed UTF-8 as much as possible (preferrably with
+    /* We try to process malformed UTF-8 as much as possible (preferably with
        warnings), but these two mean we make no progress in the string and
        might enter an infinite loop */
     if (retlen == (STRLEN) -1 || retlen == 0)
@@ -1225,7 +1225,7 @@ STATIC I32
 S_unpack_rec(pTHX_ tempsym_t* symptr, const char *s, const char *strbeg, const char *strend, const char **new_s )
 {
     dVAR; dSP;
-    SV *sv;
+    SV *sv = NULL;
     const I32 start_sp_offset = SP - PL_stack_base;
     howlen_t howlen;
     I32 checksum = 0;
@@ -1558,7 +1558,7 @@ S_unpack_rec(pTHX_ tempsym_t* symptr, const char *s, const char *strbeg, const c
        }
        case 'H':
        case 'h': {
-           char *str;
+           char *str = NULL;
            /* Preliminary length estimate, acceptable for utf8 too */
            if (howlen == e_star || len > (strend - s) * 2)
                len = (strend - s) * 2;
@@ -1759,7 +1759,7 @@ S_unpack_rec(pTHX_ tempsym_t* symptr, const char *s, const char *strbeg, const c
            }
            break;
 #else
-            /* Fallhrough! */
+            /* Fallthrough! */
 #endif
        case 'v':
        case 'n':
@@ -3353,7 +3353,7 @@ extern const double _double_constants[];
                    goto w_string;
                else if (SvNOKp(fromstr)) {
                    /* 10**NV_MAX_10_EXP is the largest power of 10
-                      so 10**(NV_MAX_10_EXP+1) is definately unrepresentable
+                      so 10**(NV_MAX_10_EXP+1) is definitely unrepresentable
                       given 10**(NV_MAX_10_EXP+1) == 128 ** x solve for x:
                       x = (NV_MAX_10_EXP+1) * log (10) / log (128)
                       And with that many bytes only Inf can overflow.