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annotate gcc/testsuite/gcc.dg/Wbuiltin-declaration-mismatch-8.c @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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145
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1 /* PR c/86125 - missing -Wbuiltin-declaration-mismatch on a mismatched
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2 return type
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3 Verify that declarations of file I/O built-ins with different
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4 definitions of struct FILE triggers -Wbuiltin-declaration-mismatch
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5 when -Wextra is specified.
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6 { dg-do compile }
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7 { dg-options "-Wall -Wbuiltin-declaration-mismatch" } */
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8
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9 struct FooFile;
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10 int fputc (int, struct FooFile*);
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11
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12 typedef struct FooFile AlsoFooFile;
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13 int fprintf (AlsoFooFile*, const char*, ...);
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14
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15 typedef AlsoFooFile* FooFilePtr;
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16 int fscanf (FooFilePtr, const char*, ...);
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17
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18 /* No warning here (-Wextra not specified). */
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19 struct BarFile;
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20 int vfprintf (struct BarFile*, const char*, __builtin_va_list);
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21
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22
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23 /* Set -Wextra and verify -Wbuiltin-declaration-mismatch is issued. */
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24 #pragma GCC diagnostic warning "-Wextra"
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25
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26 int fputs (const char*, struct BarFile*); /* { dg-warning "mismatch in argument 2 type of built-in function .fputs.; expected .struct FooFile \\\*." } */