| 1 | NAME |
1 | NAME |
| 2 | Devel::FindRef - where is that reference to my scalar hiding? |
2 | Devel::FindRef - where is that reference to my variable hiding? |
| 3 | |
3 | |
| 4 | SYNOPSIS |
4 | SYNOPSIS |
| 5 | use Devel::FindRef; |
5 | use Devel::FindRef; |
| 6 | |
6 | |
| 7 | DESCRIPTION |
7 | DESCRIPTION |
| … | |
… | |
| 30 | testsub; |
30 | testsub; |
| 31 | |
31 | |
| 32 | The output is as follows (or similar to this, in case I forget to update |
32 | The output is as follows (or similar to this, in case I forget to update |
| 33 | the manpage after some changes): |
33 | the manpage after some changes): |
| 34 | |
34 | |
| 35 | SCALAR(0x7bd2d0) is |
35 | SCALAR(0x814ece8) is |
| 36 | in the global $Test::var. |
36 | +- in the global $Test::var. |
| 37 | referenced by REF(0x7bd240), which is |
37 | +- referenced by REF(0x814f9e4), which is |
| 38 | in the member 'ukukey2' of HASH(0x7bd228), which is |
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| 39 | referenced by REF(0x81dae8), which is |
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| 40 | in the lexical '$local' in CODE(0x81da88), which is |
38 | | in the lexical '$x' in CODE(0x814ed78), which is |
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39 | | the containing scope for CODE(0x820c4b0), which is |
| 41 | in the global &Test::testsub. |
40 | | in the global &Test::testsub. |
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41 | +- referenced by REF(0x814ed6c), which is |
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42 | | in the member 'ukukey' of HASH(0x81da20c), which is |
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43 | | in the global %Test::hash. |
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44 | +- referenced by REF(0x814ec28), which is |
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45 | | not found anywhere I looked :( |
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46 | +- referenced by REF(0x814eb44), which is |
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47 | in the member 'ukukey2' of HASH(0x814f99c), which is |
| 42 | referenced by REF(0x81da40), which is |
48 | +- referenced by REF(0x820c450), which is |
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49 | | in the lexical '$local' in CODE(0x820c4b0), which was seen before. |
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50 | +- referenced by REF(0x820c204), which is |
| 43 | in the global $Test::hash2. |
51 | in the global $Test::hash2. |
| 44 | referenced by REF(0x79f3f8), which is |
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| 45 | in the lexical '$x' in CODE(0x79f518), which is |
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| 46 | the containing scope for CODE(0x81da88), which is |
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| 47 | in the global &Test::testsub. |
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| 48 | referenced by REF(0x79f2f0), which is |
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| 49 | not found anywhere I looked :( |
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| 50 | referenced by REF(0x79f140), which is |
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| 51 | in the member 'ukukey' of HASH(0x81d698), which is |
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| 52 | in the global %Test::hash. |
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| 53 | |
52 | |
| 54 | It is a bit convoluted to read, but basically it says that the value |
53 | It is a bit convoluted to read, but basically it says that the value |
| 55 | stored in $var can be found: |
54 | stored in $var can be found: |
| 56 | |
55 | |
| 57 | - in some variable $x whose origin is not known (I frankly have no idea |
56 | - in some variable $x whose origin is not known (I frankly have no idea |
| … | |
… | |
| 91 | call on invalid ones. |
90 | call on invalid ones. |
| 92 | |
91 | |
| 93 | # we know that HASH(0x176ff70) exists, so turn it into a hashref: |
92 | # we know that HASH(0x176ff70) exists, so turn it into a hashref: |
| 94 | my $ref_to_hash = Devel::FindRef::ptr2ref 0x176ff70; |
93 | my $ref_to_hash = Devel::FindRef::ptr2ref 0x176ff70; |
| 95 | |
94 | |
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95 | ENVIRONMENT VARIABLES |
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96 | You can set the environment variable "PERL_DEVEL_FINDREF_DEPTH" to an |
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97 | integer to override the default depth in "track". If a call explicitly |
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98 | specified a depth it is not overridden. |
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99 | |
| 96 | AUTHOR |
100 | AUTHOR |
| 97 | Marc Lehmann <pcg@goof.com>. |
101 | Marc Lehmann <pcg@goof.com>. |
| 98 | |
102 | |
| 99 | BUGS |
103 | BUGS |
| 100 | Only code values, arrays, hashes, scalars and magic are being looked at. |
104 | Only code values, arrays, hashes, scalars and magic are being looked at. |
